1
|
Orsini S, Milillo A, Lichtenegger H, Varsani A, Barabash S, Livi S, De Angelis E, Alberti T, Laky G, Nilsson H, Phillips M, Aronica A, Kallio E, Wurz P, Olivieri A, Plainaki C, Slavin JA, Dandouras I, Raines JM, Benkhoff J, Zender J, Berthelier JJ, Dosa M, Ho GC, Killen RM, McKenna-Lawlor S, Torkar K, Vaisberg O, Allegrini F, Daglis IA, Dong C, Escoubet CP, Fatemi S, Fränz M, Ivanovski S, Krupp N, Lammer H, Leblanc F, Mangano V, Mura A, Rispoli R, Sarantos M, Smith HT, Wieser M, Camozzi F, Di Lellis AM, Fremuth G, Giner F, Gurnee R, Hayes J, Jeszenszky H, Trantham B, Balaz J, Baumjohann W, Cantatore M, Delcourt D, Delva M, Desai M, Fischer H, Galli A, Grande M, Holmström M, Horvath I, Hsieh KC, Jarvinen R, Johnson RE, Kazakov A, Kecskemety K, Krüger H, Kürbisch C, Leblanc F, Leichtfried M, Mangraviti E, Massetti S, Moissenko D, Moroni M, Noschese R, Nuccilli F, Paschalidis N, Ryno J, Seki K, Shestakov A, Shuvalov S, Sordini R, Stenbeck F, Svensson J, Szalai S, Szego K, Toublanc D, Vertolli N, Wallner R, Vorburger A. Inner southern magnetosphere observation of Mercury via SERENA ion sensors in BepiColombo mission. Nat Commun 2022; 13:7390. [PMID: 36450728 PMCID: PMC9712576 DOI: 10.1038/s41467-022-34988-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 11/14/2022] [Indexed: 12/03/2022] Open
Abstract
Mercury's southern inner magnetosphere is an unexplored region as it was not observed by earlier space missions. In October 2021, BepiColombo mission has passed through this region during its first Mercury flyby. Here, we describe the observations of SERENA ion sensors nearby and inside Mercury's magnetosphere. An intermittent high-energy signal, possibly due to an interplanetary magnetic flux rope, has been observed downstream Mercury, together with low energy solar wind. Low energy ions, possibly due to satellite outgassing, were detected outside the magnetosphere. The dayside magnetopause and bow-shock crossing were much closer to the planet than expected, signature of a highly eroded magnetosphere. Different ion populations have been observed inside the magnetosphere, like low latitude boundary layer at magnetopause inbound and partial ring current at dawn close to the planet. These observations are important for understanding the weak magnetosphere behavior so close to the Sun, revealing details never reached before.
Collapse
|
2
|
Dunn WR, Weigt DM, Grodent D, Yao ZH, May D, Feigelman K, Sipos B, Fleming D, McEntee S, Bonfond B, Gladstone GR, Johnson RE, Jackman CM, Guo RL, Branduardi‐Raymont G, Wibisono AD, Kraft RP, Nichols JD, Ray LC. Jupiter's X-Ray and UV Dark Polar Region. GEOPHYSICAL RESEARCH LETTERS 2022; 49:e2021GL097390. [PMID: 35865009 PMCID: PMC9287093 DOI: 10.1029/2021gl097390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 05/18/2022] [Accepted: 05/20/2022] [Indexed: 06/15/2023]
Abstract
We present 14 simultaneous Chandra X-ray Observatory (CXO)-Hubble Space Telescope (HST) observations of Jupiter's Northern X-ray and ultraviolet (UV) aurorae from 2016 to 2019. Despite the variety of dynamic UV and X-ray auroral structures, one region is conspicuous by its persistent absence of emission: the dark polar region (DPR). Previous HST observations have shown that very little UV emission is produced by the DPR. We find that the DPR also produces very few X-ray photons. For all 14 observations, the low level of X-ray emission from the DPR is consistent (within 2-standard deviations) with scattered solar emission and/or photons spread by Chandra's Point Spread Function from known X-ray-bright regions. We therefore conclude that for these 14 observations the DPR produced no statistically significant detectable X-ray signature.
Collapse
|
3
|
Orsini S, Livi SA, Lichtenegger H, Barabash S, Milillo A, De Angelis E, Phillips M, Laky G, Wieser M, Olivieri A, Plainaki C, Ho G, Killen RM, Slavin JA, Wurz P, Berthelier JJ, Dandouras I, Kallio E, McKenna-Lawlor S, Szalai S, Torkar K, Vaisberg O, Allegrini F, Daglis IA, Dong C, Escoubet CP, Fatemi S, Fränz M, Ivanovski S, Krupp N, Lammer H, Leblanc F, Mangano V, Mura A, Nilsson H, Raines JM, Rispoli R, Sarantos M, Smith HT, Szego K, Aronica A, Camozzi F, Di Lellis AM, Fremuth G, Giner F, Gurnee R, Hayes J, Jeszenszky H, Tominetti F, Trantham B, Balaz J, Baumjohann W, Brienza D, Bührke U, Bush MD, Cantatore M, Cibella S, Colasanti L, Cremonese G, Cremonesi L, D'Alessandro M, Delcourt D, Delva M, Desai M, Fama M, Ferris M, Fischer H, Gaggero A, Gamborino D, Garnier P, Gibson WC, Goldstein R, Grande M, Grishin V, Haggerty D, Holmström M, Horvath I, Hsieh KC, Jacques A, Johnson RE, Kazakov A, Kecskemety K, Krüger H, Kürbisch C, Lazzarotto F, Leblanc F, Leichtfried M, Leoni R, Loose A, Maschietti D, Massetti S, Mattioli F, Miller G, Moissenko D, Morbidini A, Noschese R, Nuccilli F, Nunez C, Paschalidis N, Persyn S, Piazza D, Oja M, Ryno J, Schmidt W, Scheer JA, Shestakov A, Shuvalov S, Seki K, Selci S, Smith K, Sordini R, Svensson J, Szalai L, Toublanc D, Urdiales C, Varsani A, Vertolli N, Wallner R, Wahlstroem P, Wilson P, Zampieri S. SERENA: Particle Instrument Suite for Determining the Sun-Mercury Interaction from BepiColombo. SPACE SCIENCE REVIEWS 2021; 217:11. [PMID: 33487762 PMCID: PMC7803725 DOI: 10.1007/s11214-020-00787-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Accepted: 12/03/2020] [Indexed: 06/12/2023]
Abstract
The ESA-JAXA BepiColombo mission to Mercury will provide simultaneous measurements from two spacecraft, offering an unprecedented opportunity to investigate magnetospheric and exospheric particle dynamics at Mercury as well as their interactions with solar wind, solar radiation, and interplanetary dust. The particle instrument suite SERENA (Search for Exospheric Refilling and Emitted Natural Abundances) is flying in space on-board the BepiColombo Mercury Planetary Orbiter (MPO) and is the only instrument for ion and neutral particle detection aboard the MPO. It comprises four independent sensors: ELENA for neutral particle flow detection, Strofio for neutral gas detection, PICAM for planetary ions observations, and MIPA, mostly for solar wind ion measurements. SERENA is managed by a System Control Unit located inside the ELENA box. In the present paper the scientific goals of this suite are described, and then the four units are detailed, as well as their major features and calibration results. Finally, the SERENA operational activities are shown during the orbital path around Mercury, with also some reference to the activities planned during the long cruise phase.
Collapse
|
4
|
Johnson RE. P20 Transatlantic knowledge mobilisation in public health: A case study. Br J Soc Med 2016. [DOI: 10.1136/jech-2016-208064.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
5
|
Murphy M, Johnson RE, Boardman FK, Baker A, Parsons NR, Robertson W. P63 An exploration of childhood obesity across ethnic groups in Coventry. Br J Soc Med 2016. [DOI: 10.1136/jech-2016-208064.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
6
|
Johnson RE, Clarke A, Stewart-Brown S. OP41 Practising Partnership: A Qualitative Analysis of Public Health and Local Authority Co-Implementation of Health and Mental Wellbeing Improvement Interventions. Br J Soc Med 2013. [DOI: 10.1136/jech-2013-203126.41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
7
|
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]
|
8
|
Lanzerotti LJ, Brown WL, Maclennan CG, Cheng AF, Krimigis SM, Johnson RE. Effects of charged particles on the surfaces of the satellites of Uranus. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/ja092ia13p14949] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
9
|
Hill TW, Thomsen MF, Tokar RL, Coates AJ, Lewis GR, Young DT, Crary FJ, Baragiola RA, Johnson RE, Dong Y, Wilson RJ, Jones GH, Wahlund JE, Mitchell DG, Horányi M. Charged nanograins in the Enceladus plume. ACTA ACUST UNITED AC 2012. [DOI: 10.1029/2011ja017218] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
10
|
Westlake JH, Bell JM, Waite JH, Johnson RE, Luhmann JG, Mandt KE, Magee BA, Rymer AM. Titan's thermospheric response to various plasma environments. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016251] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
11
|
Teolis BD, Jones GH, Miles PF, Tokar RL, Magee BA, Waite JH, Roussos E, Young DT, Crary FJ, Coates AJ, Johnson RE, Tseng WL, Baragiola RA. Cassini Finds an Oxygen-Carbon Dioxide Atmosphere at Saturn's Icy Moon Rhea. Science 2010; 330:1813-5. [DOI: 10.1126/science.1198366] [Citation(s) in RCA: 107] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
12
|
Smith HT, Johnson RE, Perry ME, Mitchell DG, McNutt RL, Young DT. Enceladus plume variability and the neutral gas densities in Saturn's magnetosphere. ACTA ACUST UNITED AC 2010. [DOI: 10.1029/2009ja015184] [Citation(s) in RCA: 83] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
13
|
Concheiro M, Jones HE, Johnson RE, Choo R, Shakleya DM, Huestis MA. Umbilical Cord Monitoring of In Utero Drug Exposure to Buprenorphine and Correlation with Maternal Dose and Neonatal Outcomes. J Anal Toxicol 2010; 34:498-505. [DOI: 10.1093/jat/34.8.498] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
14
|
|
15
|
|
16
|
Barger AN, Johnson RE. ANAEROBIC GLYCOGENOLYSIS IN THE MUSCLES OF RANA PIPIENS LIVING AT LOW TEMPERATURES. ACTA ACUST UNITED AC 2010; 24:669-77. [PMID: 19873242 PMCID: PMC2238000 DOI: 10.1085/jgp.24.6.669] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
1. A considerable proportion of R. pipiens caught in the spring and stored without food for several weeks at about 4 degrees C. had gastrocnemii that did not break down glycogen when they contracted anaerobically to complete exhaustion. A smaller number of the same muscles did not produce lactate. 2. There was no evident relation between failure to break down glycogen and the glycogen content of such muscles, some of which had more than 500 mg. of glycogen per 100 gm. of tissue. 3. The hypothesis of Meyerhof and his followers that aerobic contraction of frog muscles may at times take place with sources of energy other than carbohydrate is therefore extended to include anaerobic contraction.
Collapse
|
17
|
Smith HT, Shappirio M, Johnson RE, Reisenfeld D, Sittler EC, Crary FJ, McComas DJ, Young DT. Enceladus: A potential source of ammonia products and molecular nitrogen for Saturn's magnetosphere. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008ja013352] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
18
|
Kacinko SL, Jones HE, Johnson RE, Choo RE, Huestis MA. Correlations of maternal buprenorphine dose, buprenorphine, and metabolite concentrations in meconium with neonatal outcomes. Clin Pharmacol Ther 2008; 84:604-12. [PMID: 18701886 DOI: 10.1038/clpt.2008.156] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
For the first time, relationships among maternal buprenorphine dose, meconium buprenorphine and metabolite concentrations, and neonatal outcomes are reported. Free and total buprenorphine and norbuprenorphine, nicotine, opiates, cocaine, benzodiazepines, and metabolites were quantified in meconium from 10 infants born to women who had received buprenorphine during pregnancy. Neither cumulative nor total third-trimester maternal buprenorphine dose predicted meconium concentrations or neonatal outcomes. Total buprenorphine meconium concentrations and buprenorphine/norbuprenorphine ratios were significantly related to neonatal abstinence syndrome (NAS) scores >4. As free buprenorphine concentration and percentage free buprenorphine increased, head circumference decreased. Thrice-weekly urine tests for opiates, cocaine, and benzodiazepines and self-reported smoking data from the mother were compared with data from analysis of the meconium to estimate in utero exposure. Time of last drug use and frequency of use during the third trimester were important factors associated with drug-positive meconium specimens. The results suggest that buprenorphine and metabolite concentrations in the meconium may predict the onset and frequency of NAS.
Collapse
|
19
|
Jones GH, Roussos E, Krupp N, Beckmann U, Coates AJ, Crary F, Dandouras I, Dikarev V, Dougherty MK, Garnier P, Hansen CJ, Hendrix AR, Hospodarsky GB, Johnson RE, Kempf S, Khurana KK, Krimigis SM, Krüger H, Kurth WS, Lagg A, McAndrews HJ, Mitchell DG, Paranicas C, Postberg F, Russell CT, Saur J, Seiß M, Spahn F, Srama R, Strobel DF, Tokar R, Wahlund JE, Wilson RJ, Woch J, Young D. The Dust Halo of Saturn's Largest Icy Moon, Rhea. Science 2008; 319:1380-4. [PMID: 18323452 DOI: 10.1126/science.1151524] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
20
|
Cassidy TA, Johnson RE, Geissler PE, Leblanc F. Simulation of NaDemission near Europa during eclipse. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2007je002955] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
21
|
Chaufray JY, Modolo R, Leblanc F, Chanteur G, Johnson RE, Luhmann JG. Mars solar wind interaction: Formation of the Martian corona and atmospheric loss to space. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2007je002915] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
22
|
De La Haye V, Waite JH, Johnson RE, Yelle RV, Cravens TE, Luhmann JG, Kasprzak WT, Gell DA, Magee B, Leblanc F, Michael M, Jurac S, Robertson IP. Cassini Ion and Neutral Mass Spectrometer data in Titan's upper atmosphere and exosphere: Observation of a suprathermal corona. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006ja012222] [Citation(s) in RCA: 98] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
23
|
Burger MH, Sittler EC, Johnson RE, Smith HT, Tucker OJ, Shematovich VI. Understanding the escape of water from Enceladus. ACTA ACUST UNITED AC 2007. [DOI: 10.1029/2006ja012086] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
24
|
Johnson RE. A review of: “Surface Contamination: Genesis, Detection, and Control”, K. L. Mittal, editor, Plenum Press, New York, 1979. 2 vols., $39.50 per volume; 2 volume sec, $65.00. J DISPER SCI TECHNOL 2007. [DOI: 10.1080/01932698008962177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|
25
|
Johnson RE, Ranganathan S. Generalized approach to Ewald sums. PHYSICAL REVIEW. E, STATISTICAL, NONLINEAR, AND SOFT MATTER PHYSICS 2007; 75:056706. [PMID: 17677197 DOI: 10.1103/physreve.75.056706] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2006] [Revised: 11/30/2006] [Indexed: 05/16/2023]
Abstract
We derive Ewald sum formulas for potential energy and force for a system of point charges interacting with an arbitrary, long-range central potential. The system is made neutral by a uniform background of opposite charge interacting with the same potential. These formulas can be readily used in computer numerical simulations of model physical systems. In particular, expressions for the potential energy and the force have been obtained in both two and three dimensions for Coulomb and other power-law potentials, Yukawa systems, and for an electronic bilayer. We discuss numerical results and their accuracy for various systems and, based on our analysis, suggest values to be used for the parameters that appear in the Ewald sums.
Collapse
|