1
|
Modulational Instability of Ion-Acoustic Waves in Pair-Ion Plasma. PLASMA 2021. [DOI: 10.3390/plasma5010001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The modulational instability (MI) of ion-acoustic waves (IAWs) is examined theoretically in a four-component plasma system containing inertialess electrons featuring a non-thermal, non-extensive distribution, iso-thermal positrons, and positively as well as negatively charged inertial ions. In this connection, a non-linear Schrödinger equation (NLSE), which dominates the conditions for MI associated with IAWs, is obtained by using the reductive perturbation method. The numerical analysis of the NLSE reveals that the increment in non-thermality leads to a more unstable state, whereas the enhancement in non-extensivity introduces a less unstable state. It also signifies the bright (dark) ion-acoustic (IA) envelope solitons mode in the unstable (stable) domain. The conditions for MI and its growth rate in the unstable regime of the IAWs are vigorously modified by the different plasma parameters (viz., non-thermal, non-extensive q-distributed electron, iso-thermal positron, the ion charge state, the mass of the ion and positron, non-thermal parameter α, the temperature of electron and positron, etc.). Our findings may supplement and add to prior research in non-thermal, non-extensive electrons and iso-thermal positrons that can co-exist with positive as well as negative inertial ions.
Collapse
|
2
|
Abstract
In this work, the modulational instability of dust-acoustic (DA) waves (DAWs) is theoretically studied in a four-component plasma medium with electrons, positrons, ions, and negative dust grains. The nonlinear and dispersive coefficients of the nonlinear Schrödinger equation (NLSE) are used to recognize the stable and unstable parametric regimes of the DAWs. It can be seen from the numerical analysis that the amplitude of the DA rogue waves decreases with increasing populations of positrons and ions. It is also observed that the direction of the variation of the critical wave number is independent (dependent) of the sign (magnitude) of q. The applications of the outcomes from the present investigation are briefly addressed.
Collapse
|
3
|
Abstract
The modulational instability (MI) of ion-acoustic (IA) waves (IAWs) and associated IA rogue waves (IARWs) are studied in double-pair plasma containing inertial positive and negative ions, inertialess non-extensive electrons and iso-thermal positrons. A standard nonlinear Schrödinger equation (NLSE) is derived by employing reductive perturbation method. It can be seen from the numerical analysis that the plasma system supports both modulationally stable (unstable) parametric regime in which the dispersive and nonlinear coefficients of the NLSE have opposite (same) sign. It is also found that the basic features of IAWs (viz., MI criteria of IAWs, amplitude, and width of the IARWs, etc.) are rigorously changed by the plasma parameters such as mass, charge state, and number density of the plasma species. The outcomes of our present investigation should be useful in understanding the propagation of nonlinear electrostatic IAWs and associated IARWs in astrophysical and laboratory plasmas.
Collapse
|
4
|
Hashemzadeh M. Discrete eigenmodes of filamentation instability in the presence of a q-nonextensive distribution. Phys Rev E 2020; 101:013202. [PMID: 32069659 DOI: 10.1103/physreve.101.013202] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Indexed: 11/07/2022]
Abstract
Discrete eigenmodes of the filamentation instability in a weakly ionized current-driven plasma in the presence of a q-nonextensive electron velocity distribution is investigated. Considering the kinetic theory, Bhatnagar-Gross-Krook collision model, and Lorentz transformation relations, the generalized longitudinal and transverse dielectric permittivities are obtained. Taking into account the long-wavelength limit and diffusion frequency limit, the dispersion relations are obtained. Using the approximation of geometrical optics and linear inhomogeneity of the plasma, the real and imaginary parts of the frequency are discussed in these limits. It is shown that in the long-wavelength limit, when the normalized electron velocity is increased the growth rate of the instability increases. However, when the collision frequency is increased the growth rate of the filamentation instability decreases. In the diffusion frequency limit, results indicate that the effects of the electron velocity and q-nonextensive parameter on the growth rate of the instability are similar. Finally, it is found that when the collision frequency is increased the growth rate of the instability increases in the presence of a q-nonextensive distribution.
Collapse
Affiliation(s)
- M Hashemzadeh
- Faculty of Physics, Shahrood University of Technology, Shahrood, Semnan Province, Iran
| |
Collapse
|
5
|
Dimitrov V, Bar-Nun A. Kinetic Pathways in the Atmospheric Chemistry of Titan – a Generalized Analysis. PROGRESS IN REACTION KINETICS AND MECHANISM 2019. [DOI: 10.3184/007967404323147058] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Titan, the sixth Saturnine moon, is a unique celestial body in many respects, including the existence of a high-density atmosphere over a relatively small astro-physical object, chemical activity in the low-potential reducing medium, the presence of an extensive aerosol domain, etc. Despite many observations, simulation experiments and theoretical models, the general picture of Titan's atmospheric photochemistry is still imprecise. This study of the most general features of chemical activity in Titan's atmosphere by means of Generalized Kinetic Analysis (GKA) is based on the point that both the probability and efficiency of kinetic trends are estimated solely on the basis of energy/material restrictions and general kinetic laws. Only the quantity (intensity) and quality (spectrum) of the external driving force are considered closely, while both the particular kinetic demands and low internal energy resources of Titan's background are discounted. What this means is that the main inferences of GKA should be valid for any given kinetic model. Only a small part Lch of the total external energy flux Labs∼12·6 W m−2 is photochemically active Lch = (L1ion + L2ion + L1dis) + L2ch = (1·5 X 10−3 + 0·22 X 10−3 + 10·6 X 10−3) + 0·69 W m−2. The secondary energy L2ch (1440<λ<3500Å) meets the common energy requirements, while the primary energies L1ion, L2ion and L1dis define kinetic pathways of the chemical process, i.e. L1ion (790<λ<980Å) and L2ion (λ<790Å) initiate ionic photochemistry via ionization of CH4 and N2, respectively, while L1dis (980<λ<1440Å) provides photodissociation of CH4 to neutral species. Because of severe energy/material restrictions, the general chemical process proceeds in the form of a self-sustaining Diels-Alder diene low-temperature synthesis to give telomerization and polymerization. GKA proves that the main kinetic pathways (photodissociation to neutrals and charged photoionization) play different roles with respect to the quantitative and qualitative formation of the final stable products of Titan's atmospheric photochemistry. The neutral pathway governs the bulk (overall yield) of the final products while ionic chemistry is responsible for its wide chemical composition (variety of chemical species). Species identification in terms of hydrocarbon type content results in the following weight ratio composition of the final products: dienes (0·60–0·65) + saturated/unsaturated acyclic pure hydrocarbons (0·16–0·19) + tholins (0·07–0·08) + isocyclics (0·03–0·05) + miscellaneous (0·05). The elemental composition of this bulk material is (C/H/N)∼1·00/ 1·12/ 0·08.
Collapse
Affiliation(s)
- Vasili Dimitrov
- Department of Geophysics and Planetary Sciences, Tel-Aviv University, 69978 Ramat-Aviv, Israel
| | - Akiva Bar-Nun
- Department of Geophysics and Planetary Sciences, Tel-Aviv University, 69978 Ramat-Aviv, Israel
| |
Collapse
|
6
|
Chowdhury NA, Mannan A, Hasan MM, Mamun AA. Heavy ion-acoustic rogue waves in electron-positron multi-ion plasmas. CHAOS (WOODBURY, N.Y.) 2017; 27:093105. [PMID: 28964149 DOI: 10.1063/1.4985113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The nonlinear propagation of heavy-ion-acoustic (HIA) waves (HIAWs) in a four-component multi-ion plasma (containing inertial heavy negative ions and light positive ions, as well as inertialess nonextensive electrons and positrons) has been theoretically investigated. The nonlinear Schrödinger (NLS) equation is derived by employing the reductive perturbation method. It is found that the NLS equation leads to the modulational instability (MI) of HIAWs, and to the formation of HIA rogue waves (HIARWs), which are due to the effects of nonlinearity and dispersion in the propagation of HIAWs. The conditions for the MI of HIAWs and the basic properties of the generated HIARWs are identified. It is observed that the striking features (viz., instability criteria, growth rate of MI, amplitude and width of HIARWs, etc.) of the HIAWs are significantly modified by the effects of nonextensivity of electrons and positrons, the ratio of light positive ion mass to heavy negative ion mass, the ratio of electron number density to light positive ion number density, the ratio of electron temperature to positron temperature, etc. The relevancy of our present investigation to the observations in space (viz., cometary comae and earth's ionosphere) and laboratory (viz., solid-high intense laser plasma interaction experiments) plasmas is pointed out.
Collapse
Affiliation(s)
- N A Chowdhury
- Department of Physics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - A Mannan
- Department of Physics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - M M Hasan
- Department of Physics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| | - A A Mamun
- Department of Physics, Jahangirnagar University, Savar, Dhaka 1342, Bangladesh
| |
Collapse
|
7
|
El-Labany S, El-Shewy E, Abd El-Razek H, El-Rahman A. Wave propagation in strongly dispersive superthermal dusty plasma. ADVANCES IN SPACE RESEARCH 2017; 59:1962-1968. [DOI: 10.1016/j.asr.2017.01.042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
|
8
|
Kollmann P, Roussos E, Kotova A, Cooper JF, Mitchell DG, Krupp N, Paranicas C. MeV proton flux predictions near Saturn's D ring. JOURNAL OF GEOPHYSICAL RESEARCH. SPACE PHYSICS 2015; 120:8586-8602. [PMID: 27812437 PMCID: PMC5066344 DOI: 10.1002/2015ja021621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Revised: 09/11/2015] [Accepted: 09/22/2015] [Indexed: 06/06/2023]
Abstract
Radiation belts of MeV protons have been observed just outward of Saturn's main rings. During the final stages of the mission, the Cassini spacecraft will pass through the gap between the main rings and the planet. Based on how the known radiation belts of Saturn are formed, it is expected that MeV protons will be present in this gap and also bounce through the tenuous D ring right outside the gap. At least one model has suggested that the intensity of MeV protons near the planet could be much larger than in the known belts. We model this inner radiation belt using a technique developed earlier to understand Saturn's known radiation belts. We find that the inner belt is very different from the outer belts in the sense that its intensity is limited by the densities of the D ring and Saturn's upper atmosphere, not by radial diffusion and satellite absorption. The atmospheric density is relatively well constrained by EUV occultations. Based on that we predict an intensity in the gap region that is well below that of the known belts. It is more difficult to do the same for the region magnetically connected to the D ring since its density is poorly constrained. We find that the intensity in this region can be comparable to the known belts. Such intensities pose no hazard to the mission since Cassini would only experience these fluxes on timescales of minutes but might affect scientific measurements by decreasing the signal-to-contamination ratio of instruments.
Collapse
Affiliation(s)
- P. Kollmann
- The Johns Hopkins UniversityApplied Physics LaboratoryLaurelMarylandUSA
| | - E. Roussos
- Max Planck Institute for Solar System ResearchGöttingenGermany
| | - A. Kotova
- Max Planck Institute for Solar System ResearchGöttingenGermany
- Université Paul Sabatier Toulouse IIIUPS‐OMP, IRAPToulouseFrance
| | - J. F. Cooper
- NASA Goddard Space Flight CenterGreenbeltMarylandUSA
| | - D. G. Mitchell
- The Johns Hopkins UniversityApplied Physics LaboratoryLaurelMarylandUSA
| | - N. Krupp
- Max Planck Institute for Solar System ResearchGöttingenGermany
| | - C. Paranicas
- The Johns Hopkins UniversityApplied Physics LaboratoryLaurelMarylandUSA
| |
Collapse
|
9
|
Pilkington NM, Achilleos N, Arridge CS, Guio P, Masters A, Ray LC, Sergis N, Thomsen MF, Coates AJ, Dougherty MK. Internally driven large-scale changes in the size of Saturn's magnetosphere. JOURNAL OF GEOPHYSICAL RESEARCH. SPACE PHYSICS 2015; 120:7289-7306. [PMID: 27867793 PMCID: PMC5111417 DOI: 10.1002/2015ja021290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Revised: 07/22/2015] [Accepted: 07/26/2015] [Indexed: 05/20/2023]
Abstract
Saturn's magnetic field acts as an obstacle to solar wind flow, deflecting plasma around the planet and forming a cavity known as the magnetosphere. The magnetopause defines the boundary between the planetary and solar dominated regimes, and so is strongly influenced by the variable nature of pressure sources both outside and within. Following from Pilkington et al. (2014), crossings of the magnetopause are identified using 7 years of magnetic field and particle data from the Cassini spacecraft and providing unprecedented spatial coverage of the magnetopause boundary. These observations reveal a dynamical interaction where, in addition to the external influence of the solar wind dynamic pressure, internal drivers, and hot plasma dynamics in particular can take almost complete control of the system's dayside shape and size, essentially defying the solar wind conditions. The magnetopause can move by up to 10-15 planetary radii at constant solar wind dynamic pressure, corresponding to relatively "plasma-loaded" or "plasma-depleted" states, defined in terms of the internal suprathermal plasma pressure.
Collapse
Affiliation(s)
- N. M. Pilkington
- Atmospheric Physics Laboratory, Department of Physics and AstronomyUniversity College LondonLondonUK
- The Centre for Planetary SciencesUCL/BirkbeckLondonUK
| | - N. Achilleos
- Atmospheric Physics Laboratory, Department of Physics and AstronomyUniversity College LondonLondonUK
- The Centre for Planetary SciencesUCL/BirkbeckLondonUK
| | | | - P. Guio
- Atmospheric Physics Laboratory, Department of Physics and AstronomyUniversity College LondonLondonUK
- The Centre for Planetary SciencesUCL/BirkbeckLondonUK
| | - A. Masters
- Blackett LaboratoryImperial College LondonLondonUK
| | - L. C. Ray
- Atmospheric Physics Laboratory, Department of Physics and AstronomyUniversity College LondonLondonUK
- The Centre for Planetary SciencesUCL/BirkbeckLondonUK
| | - N. Sergis
- Academy of AthensOffice of Space Research and TechnologyAthensGreece
| | | | - A. J. Coates
- The Centre for Planetary SciencesUCL/BirkbeckLondonUK
- Mullard Space Science Laboratory, Department of Space and Climate PhysicsUniversity College LondonDorkingUK
| | | |
Collapse
|
10
|
Alam MS, Uddin MJ, Masud MM, Mamun AA. Roles of superthermal electrons and positrons on positron-acoustic solitary waves and double layers in electron-positron-ion plasmas. CHAOS (WOODBURY, N.Y.) 2014; 24:033130. [PMID: 25273210 DOI: 10.1063/1.4895049] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Positron-acoustic (PA) solitary waves (SWs) and double layers (DLs) in four-component plasmas consisting of immobile positive ions, mobile cold positrons, and superthermal (kappa distributed) hot positrons and electrons are investigated both numerically and analytically by deriving Korteweg-de Vries (K-dV), modified K-dV (mK-dV), and Gardner equations along with their DLs solutions using the reductive perturbation method. It is examined that depending on the plasma parameters, the K-dV SWs, Gardner SWs, and DLs support either compressive or rarefactive structures, whereas mK-dV SWs support only compressive structure. It is also found that the presence of superthermal (kappa distributed) hot positrons and hot electrons significantly modify the basic features of PA SWs as well as PA DLs. Besides, the critical number density ratio of hot positrons and cold positrons play an important role in the polarity of PA SWs and DLs. The implications of our results in different space as well as laboratory plasma environments are briefly discussed.
Collapse
Affiliation(s)
- M S Alam
- Department of Physics, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - M J Uddin
- Department of Physics, Jahangirnagar University, Savar, Dhaka, Bangladesh
| | - M M Masud
- Department of Physics, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh
| | - A A Mamun
- Department of Physics, Jahangirnagar University, Savar, Dhaka, Bangladesh
| |
Collapse
|
11
|
Hamilton DC, Brown DC, Gloeckler G, Axford WI. Energetic atomic and molecular ions in Saturn's magnetosphere. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja088ia11p08905] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
12
|
Carbary JF, Mauk BH, Krimigis SM. Corotation anisotropies in Saturn's magnetosphere. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja088ia11p08937] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
13
|
Kurth WS, Scarf FL, Gurnett DA, Barbosa DD. A survey of electrostatic waves in Saturn's magnetosphere. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja088ia11p08959] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
14
|
Mauk BH, Krimigis SM, Keath EP, Cheng AF, Armstrong TP, Lanzerotti LJ, Gloeckler G, Hamilton DC. The hot plasma and radiation environment of the Uranian magnetosphere. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja092ia13p15283] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
15
|
Armstrong TP, Paonessa MT, Bell EV, Krimigis SM. Voyager observations of Saturnian ion and electron phase space densities. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja088ia11p08893] [Citation(s) in RCA: 213] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
16
|
Cheng AF, Krimigis SM, Mauk BH, Keath EP, Maclennan CG, Lanzerotti LJ, Paonessa MT, Armstrong TP. Energetic ion and electron phase space densities in the magnetosphere of Uranus. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja092ia13p15315] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
17
|
Sittler EC, Ogilvie KW, Scudder JD. Survey of low-energy plasma electrons in Saturn's magnetosphere: Voyagers 1 and 2. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja088ia11p08847] [Citation(s) in RCA: 201] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
18
|
Maclennan CG, Lanzerotti LJ, Krimigis SM, Lepping RP. Low-energy particles at the bow shock, magnetopause, and outer magnetosphere of Saturn. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja088ia11p08817] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
19
|
Lanzerotti LJ, Maclennan CG, Brown WL, Johnson RE, Barton LA, Reimann CT, Garrett JW, Boring JW. Implications of Voyager data for energetic ion erosion of the icy satellites of Saturn. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja088ia11p08765] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
20
|
Lazarus AJ, McNutt RL. Low-energy plasma ion observations in Saturn's magnetosphere. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja088ia11p08831] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
21
|
|
22
|
Moslem WM, Sabry R, El-Labany SK, Shukla PK. Dust-acoustic rogue waves in a nonextensive plasma. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2011; 84:066402. [PMID: 22304203 DOI: 10.1103/physreve.84.066402] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2011] [Revised: 11/16/2011] [Indexed: 05/31/2023]
Abstract
We present an investigation for the generation of a dust-acoustic rogue wave in a dusty plasma composed of negatively charged dust grains, as well as nonextensive electrons and ions. For this purpose, the reductive perturbation technique is used to obtain a nonlinear Schrödinger equation. The critical wave-number threshold k(c), which indicates where the modulational instability sets in, has been determined precisely for various regimes. Two different behaviors of k(c) against the nonextensive parameter q are found. For small k(c), it is found that increasing q would lead to an increase of k(c) until q approaches a certain value q(c), then further increase of q beyond q(c) decreases the value of k(c). For large k(c), the critical wave-number threshold k(c) is always increasing with q. Within the modulational instability region, a random perturbation of the amplitude grows and thus creates dust-acoustic rogue waves. In order to show that the characteristics of the rogue waves are influenced by the plasma parameters, the relevant numerical analysis of the appropriate nonlinear solution is presented. The nonlinear structure, as reported here, could be useful for controlling and maximizing highly energetic pulses in dusty plasmas.
Collapse
Affiliation(s)
- W M Moslem
- International Centre for Advanced Studies in Physical Sciences, Faculty of Physics and Astronomy, Ruhr University Bochum, D-44780 Bochum, Germany.
| | | | | | | |
Collapse
|
23
|
Kollmann P, Roussos E, Paranicas C, Krupp N, Jackman CM, Kirsch E, Glassmeier KH. Energetic particle phase space densities at Saturn: Cassini observations and interpretations. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016221] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- P. Kollmann
- Max Planck Institute for Solar System Research; Katlenburg-Lindau Germany
- Institut für Geophysik und Extraterrestrische Physik; Technische Universität Braunschweig; Braunschweig Germany
| | - E. Roussos
- Max Planck Institute for Solar System Research; Katlenburg-Lindau Germany
| | - C. Paranicas
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - N. Krupp
- Max Planck Institute for Solar System Research; Katlenburg-Lindau Germany
| | - C. M. Jackman
- Department of Physics and Astronomy; University College London; London UK
| | - E. Kirsch
- Max Planck Institute for Solar System Research; Katlenburg-Lindau Germany
| | - K.-H. Glassmeier
- Max Planck Institute for Solar System Research; Katlenburg-Lindau Germany
- Institut für Geophysik und Extraterrestrische Physik; Technische Universität Braunschweig; Braunschweig Germany
| |
Collapse
|
24
|
Kellett S, Arridge CS, Bunce EJ, Coates AJ, Cowley SWH, Dougherty MK, Persoon AM, Sergis N, Wilson RJ. Saturn's ring current: Local time dependence and temporal variability. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016216] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S. Kellett
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | - C. S. Arridge
- Mullard Space Science Laboratory; University College London; Dorking UK
| | - E. J. Bunce
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | - A. J. Coates
- Mullard Space Science Laboratory; University College London; Dorking UK
| | - S. W. H. Cowley
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | - M. K. Dougherty
- Space and Atmospheric Physics Group; Imperial College London; London UK
| | - A. M. Persoon
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - N. Sergis
- Office for Space Research and Technology; Academy of Athens; Athens Greece
| | - R. J. Wilson
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
| |
Collapse
|
25
|
Affiliation(s)
- B. H. Mauk
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - N. J. Fox
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| |
Collapse
|
26
|
Kellett S, Arridge CS, Bunce EJ, Coates AJ, Cowley SWH, Dougherty MK, Persoon AM, Sergis N, Wilson RJ. Nature of the ring current in Saturn's dayside magnetosphere. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009ja015146] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S. Kellett
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | - C. S. Arridge
- Mullard Space Science Laboratory; University College London; Dorking UK
- Center for Planetary Sciences; University College London/Birkbeck; London UK
| | - E. J. Bunce
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | - A. J. Coates
- Mullard Space Science Laboratory; University College London; Dorking UK
- Center for Planetary Sciences; University College London/Birkbeck; London UK
| | - S. W. H. Cowley
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | - M. K. Dougherty
- Space and Atmospheric Physics Group; Imperial College; London UK
| | - A. M. Persoon
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - N. Sergis
- Office for Space Research and Technology; Academy of Athens; Athens Greece
| | - R. J. Wilson
- Laboratory for Atmospheric and Space Physics; University of Colorado at Boulder; Boulder Colorado USA
| |
Collapse
|
27
|
Krimigis SM, Armstrong TP, Axford WI, Cheng AF, Gloeckler G, Hamilton DC, Keath EP, Lanzerotti LJ, Mauk BH. The magnetosphere of uranus: hot plasma and radiation environment. Science 2010; 233:97-102. [PMID: 17812897 DOI: 10.1126/science.233.4759.97] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The low-energy charged-particle (LECP) instrument on Voyager 2 measured lowenergy electrons and ions near and within the magnetosphere of Uranus. Initial analysis of the LECP measurements has revealed the following. (i) The magnetospheric particle population consists principally of protons and electrons having energies to at least 4 and 1.2 megaelectron volts, respectively, with electron intensities substantially excceding proton intensities at a given energy. (ii) The intensity profile for both particle species shows evidence that the particles were swept by planetry satellites out to at least the orbit of Titania. (iii) The ion and electron spectra may be described by a Maxwellian core at low energies (less than about 200 kiloelectron volts) and a power law at high energies (greater than about 590 kiloelectron volts; exponentmicro, 3 to 10) except inside the orbit of Miranda, where power-law spectra (micro approximately 1.1 and 3.1 for electrons and protons, respectively) are observed. (iv) At ion energies between 0.6 and 1 megaelectron volt per nucleon, the composition is dominated by protons with a minor fraction (about 10(-3)) of molecular hydrogen; the lower limit for the ratio of hydrogen to helium is greater than 10(4). (v) The proton population is sufficiently intense that fluences greater than 10(16) per square centimeter can accumulate in 10(4) to 10(') years; such fluences are sufficient to polymerize carbon monoxide and methane ice surfaces. The overall morphology of Uranus' magnetosphere resembles that of Jupiter, as evidenced by the fact that the spacecraft crossed the plasma sheet through the dawn magnetosheath twice per planetary rotation period (17.3 hours). Uranus' magnetosphere differs from that of Jupiter and of Saturn in that the plasma 1 is at most 0.1 rather than 1. Therefore, little distortion ofthe field is expected from particle loading at distances less than about 15 Uranus radii.
Collapse
|
28
|
Carbary JF, Mitchell DG, Krupp N, Krimigis SM. L shell distribution of energetic electrons at Saturn. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2009ja014341] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- J. F. Carbary
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - D. G. Mitchell
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - N. Krupp
- Max Planck Institute for Solar System Research; Lindau Germany
| | - S. M. Krimigis
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| |
Collapse
|
29
|
Kellett S, Bunce EJ, Coates AJ, Cowley SWH. Thickness of Saturn's ring current determined from north-south Cassini passes through the current layer. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008ja013942] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S. Kellett
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | - E. J. Bunce
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| | - A. J. Coates
- Mullard Space Science Laboratory; University College London; Dorking UK
- Centre for Planetary Sciences; University College London; London UK
| | - S. W. H. Cowley
- Department of Physics and Astronomy; University of Leicester; Leicester UK
| |
Collapse
|
30
|
Sergis N, Krimigis SM, Mitchell DG, Hamilton DC, Krupp N, Mauk BH, Roelof EC, Dougherty MK. Energetic particle pressure in Saturn's magnetosphere measured with the Magnetospheric Imaging Instrument on Cassini. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008ja013774] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- N. Sergis
- Office for Space Research and Technology; Academy of Athens; Athens Greece
| | - S. M. Krimigis
- Office for Space Research and Technology; Academy of Athens; Athens Greece
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - D. G. Mitchell
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - D. C. Hamilton
- Department of Physics; University of Maryland; College Park Maryland USA
| | - N. Krupp
- Max-Planck-Institut für Sonnensystemforschung; Lindau Germany
| | - B. H. Mauk
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - E. C. Roelof
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - M. K. Dougherty
- Space and Atmospheric Physics Group; Imperial College; London UK
| |
Collapse
|
31
|
Dialynas K, Krimigis SM, Mitchell DG, Hamilton DC, Krupp N, Brandt PC. Energetic ion spectral characteristics in the Saturnian magnetosphere using Cassini/MIMI measurements. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008ja013761] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- K. Dialynas
- Office for Space Research and Applications; Academy of Athens; Athens Greece
- Department of Astrophysics, Astronomy and Mechanics, Faculty of Physics; National Kapodistrian University of Athens; Athens Greece
| | - S. M. Krimigis
- Office for Space Research and Applications; Academy of Athens; Athens Greece
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - D. G. Mitchell
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - D. C. Hamilton
- Department of Physics; University of Maryland; College Park Maryland USA
| | - N. Krupp
- Max-Planck-Institut für Sonnensystemforschung; Katlenburg-Lindau Germany
| | - P. C. Brandt
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| |
Collapse
|
32
|
Garnier P, Dandouras I, Toublanc D, Roelof EC, Brandt PC, Mitchell DG, Krimigis SM, Krupp N, Hamilton DC, Dutuit O, Wahlund JE. The lower exosphere of Titan: Energetic neutral atoms absorption and imaging. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008ja013029] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. Garnier
- Centre d'Etude Spatiale des Rayonnements; CNRS/Paul Sabatier University; Toulouse France
- Swedish Institute of Space Physics; Uppsala Sweden
| | - I. Dandouras
- Centre d'Etude Spatiale des Rayonnements; CNRS/Paul Sabatier University; Toulouse France
| | - D. Toublanc
- Centre d'Etude Spatiale des Rayonnements; CNRS/Paul Sabatier University; Toulouse France
| | - E. C. Roelof
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - P. C. Brandt
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - D. G. Mitchell
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - S. M. Krimigis
- Applied Physics Laboratory; Johns Hopkins University; Laurel Maryland USA
| | - N. Krupp
- Max-Planck-Institut fur Sonnensystemforschung; Lindau Germany
| | - D. C. Hamilton
- Department of Physics; University of Maryland; College Park Maryland USA
| | - O. Dutuit
- Laboratoire de Planetologie de Grenoble; Universite Joseph Fourier; Grenoble France
| | | |
Collapse
|
33
|
Schippers P, Blanc M, André N, Dandouras I, Lewis GR, Gilbert LK, Persoon AM, Krupp N, Gurnett DA, Coates AJ, Krimigis SM, Young DT, Dougherty MK. Multi-instrument analysis of electron populations in Saturn's magnetosphere. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008ja013098] [Citation(s) in RCA: 297] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- P. Schippers
- Centre d'Etude Spatiale des Rayonnements; CNRS/Université Paul Sabatier; Toulouse France
| | - M. Blanc
- Centre d'Etude Spatiale des Rayonnements; CNRS/Université Paul Sabatier; Toulouse France
| | - N. André
- Research and Scientific Support Department; European Space Agency; Noordwijk Netherlands
| | - I. Dandouras
- Centre d'Etude Spatiale des Rayonnements; CNRS/Université Paul Sabatier; Toulouse France
| | - G. R. Lewis
- Mullard Space Science Laboratory; University College London; Dorking UK
| | - L. K. Gilbert
- Mullard Space Science Laboratory; University College London; Dorking UK
| | - A. M. Persoon
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - N. Krupp
- Max-Planck-Institut für Sonnensystemforschung; Katlenburg-Lindau Germany
| | - D. A. Gurnett
- Department of Physics and Astronomy; University of Iowa; Iowa City Iowa USA
| | - A. J. Coates
- Mullard Space Science Laboratory; University College London; Dorking UK
| | - S. M. Krimigis
- Johns Hopkins University Applied Physics Laboratory; Laurel Maryland USA
| | - D. T. Young
- Southwest Research Institute; San Antonio Texas USA
| | - M. K. Dougherty
- Department of Space and Atmospheric Physics; Imperial College London; London UK
| |
Collapse
|
34
|
Modolo R, Chanteur GM. A global hybrid model for Titan's interaction with the Kronian plasma: Application to the Cassini Ta flyby. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007ja012453] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- R. Modolo
- Centre d'Etudes des Environnements Terrestre et Plantaires; Institut Pierre Simon Laplace; Vélizy France
- Swedish Institute of Space Physics; Uppsala Sweden
| | - G. M. Chanteur
- Centre d'Etudes des Environnements Terrestre et Plantaires; Institut Pierre Simon Laplace; Vélizy France
| |
Collapse
|
35
|
A dynamic, rotating ring current around Saturn. Nature 2007; 450:1050-3. [DOI: 10.1038/nature06425] [Citation(s) in RCA: 81] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2007] [Accepted: 10/18/2007] [Indexed: 11/08/2022]
|
36
|
Whitten RC, Borucki WJ, Tripathi S. Predictions of the electrical conductivity and charging of the aerosols in Titan's nighttime atmosphere. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006je002788] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
37
|
Arridge CS, Achilleos N, Dougherty MK, Khurana KK, Russell CT. Modeling the size and shape of Saturn's magnetopause with variable dynamic pressure. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2005ja011574] [Citation(s) in RCA: 127] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
38
|
Sittler EC, Johnson RE, Smith HT, Richardson JD, Jurac S, Moore M, Cooper JF, Mauk BH, Michael M, Paranicas C, Armstrong TP, Tsurutani B. Energetic nitrogen ions within the inner magnetosphere of Saturn. ACTA ACUST UNITED AC 2006. [DOI: 10.1029/2004ja010509] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
39
|
Jurac S, Richardson JD. A self-consistent model of plasma and neutrals at Saturn: Neutral cloud morphology. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2004ja010635] [Citation(s) in RCA: 105] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- S. Jurac
- Center for Space Research; Massachusetts Institute of Technology; Cambridge Massachusetts USA
| | - J. D. Richardson
- Center for Space Research; Massachusetts Institute of Technology; Cambridge Massachusetts USA
| |
Collapse
|
40
|
Krimigis SM, Mitchell DG, Hamilton DC, Krupp N, Livi S, Roelof EC, Dandouras J, Armstrong TP, Mauk BH, Paranicas C, Brandt PC, Bolton S, Cheng AF, Choo T, Gloeckler G, Hayes J, Hsieh KC, Ip WH, Jaskulek S, Keath EP, Kirsch E, Kusterer M, Lagg A, Lanzerotti LJ, Lavallee D, Manweiler J, McEntire RW, Rasmuss W, Saur J, Turner FS, Williams DJ, Woch J. Dynamics of Saturn's Magnetosphere from MIMI During Cassini's Orbital Insertion. Science 2005; 307:1270-3. [PMID: 15731445 DOI: 10.1126/science.1105978] [Citation(s) in RCA: 149] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
The Magnetospheric Imaging Instrument (MIMI) onboard the Cassini spacecraft observed the saturnian magnetosphere from January 2004 until Saturn orbit insertion (SOI) on 1 July 2004. The MIMI sensors observed frequent energetic particle activity in interplanetary space for several months before SOI. When the imaging sensor was switched to its energetic neutral atom (ENA) operating mode on 20 February 2004, at approximately 10(3) times Saturn's radius RS (0.43 astronomical units), a weak but persistent signal was observed from the magnetosphere. About 10 days before SOI, the magnetosphere exhibited a day-night asymmetry that varied with an approximately 11-hour periodicity. Once Cassini entered the magnetosphere, in situ measurements showed high concentrations of H+, H2+, O+, OH+, and H2O+ and low concentrations of N+. The radial dependence of ion intensity profiles implies neutral gas densities sufficient to produce high loss rates of trapped ions from the middle and inner magnetosphere. ENA imaging has revealed a radiation belt that resides inward of the D ring and is probably the result of double charge exchange between the main radiation belt and the upper layers of Saturn's exosphere.
Collapse
Affiliation(s)
- S M Krimigis
- Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, USA.
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Mauk BH. Energetic ion characteristics and neutral gas interactions in Jupiter's magnetosphere. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2003ja010270] [Citation(s) in RCA: 172] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
42
|
Sittler EC. Pickup ions at Dione and Enceladus: Cassini Plasma Spectrometer simulations. ACTA ACUST UNITED AC 2004. [DOI: 10.1029/2002ja009647] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
43
|
Delitsky ML, Lane AL. Saturn's inner satellites: Ice chemistry and magnetosphere effects. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2002je001855] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
44
|
Maurice S, Sittler EC, Cooper JF, Mauk BH, Blanc M, Selesnick RS. Comprehensive analysis of electron observations at Saturn: Voyager 1 and 2. ACTA ACUST UNITED AC 1996. [DOI: 10.1029/96ja00765] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
45
|
Mauk BH, Gary SA, Kane M, Keath EP, Krimigis SM, Armstrong TP. Hot plasma parameters of Jupiter's inner magnetosphere. ACTA ACUST UNITED AC 1996. [DOI: 10.1029/96ja00006] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
46
|
|
47
|
Kane M, Mauk BH, Keath EP, Krimigis SM. Hot ions in Jupiter's magnetodisc: A model for Voyager 2 low-energy charged particle measurements. ACTA ACUST UNITED AC 1995. [DOI: 10.1029/95ja00793] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
48
|
Cheng AF, Keath EP, Krimigis SM, Mauk BH, McEntire RW, Mitchell DG, Roelof EC, Williams DJ. Imaging neutral particle detector. ACTA ACUST UNITED AC 1994. [DOI: 10.1080/02757259309532192] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
49
|
Bhardwaj A, Singhal RP. Optically thin H Lyman alpha production on outer planets: Low-energy proton Acceleration in parallel electric fields and neutral H atom precipitation from ring current. ACTA ACUST UNITED AC 1993. [DOI: 10.1029/92ja02400] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
50
|
Mauk BH, Keath EP, Kane M, Krimigis SM, Cheng AF, Acuña MH, Armstrong TP, Ness NF. The magnetosphere of Neptune: Hot plasmas and energetic particles. ACTA ACUST UNITED AC 1991. [DOI: 10.1029/91ja01820] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|