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Sigsbee K, Kletzing CA, Faden J, Smith CW. Occurrence Rates of Electromagnetic Ion Cyclotron (EMIC) Waves With Rising Tones in the Van Allen Probes Data Set. JOURNAL OF GEOPHYSICAL RESEARCH. SPACE PHYSICS 2023; 128:e2022JA030548. [PMID: 37035844 PMCID: PMC10078204 DOI: 10.1029/2022ja030548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 12/12/2022] [Accepted: 01/11/2023] [Indexed: 06/19/2023]
Abstract
In Fourier time-frequency power spectrograms of satellite magnetic field data, electromagnetic ion cyclotron (EMIC) waves may feature discrete, rising tone structures that rapidly increase in frequency. Using data from the Van Allen Probes Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) fluxgate magnetometer, we conducted a statistical study of EMIC waves from September 2012 through June 2016. We compared the occurrence rates and spatial distributions for all EMIC waves with those for rising tone EMIC waves as a function of magnetic local time (MLT) and L shell, as well as a function of R XY and Z in solar-magnetic (SM) coordinates. Overall, EMIC waves occurred during 2.4% of the time period considered, but rising tone EMIC waves were only found during 0.2% of the time period considered. About 7%-8% of the minutes of orbital coverage with H+ or He+ band EMIC waves had rising tones. The regions of peak occurrence rates for H+ and He+ band waves, as well as waves with rising tones, were found in the noon and dusk sectors for 4 < L < 6. The preferred regions for H+ waves as a function of R XY and Z SM suggest an association with magnetospheric compressions near noon and interactions between plumes and the ring current near dusk. Peak occurrence rates for O+ band waves were found between 2 < L < 4 at all MLT, and over a wide range of L shells near dusk. No rising tones were found in the O+ band.
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Affiliation(s)
- K. Sigsbee
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - C. A. Kletzing
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - J. Faden
- Department of Physics and AstronomyUniversity of IowaIowa CityIAUSA
| | - C. W. Smith
- Institute for Earth, Oceans and SpaceUniversity of New HampshireDurhamNHUSA
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Asamura K, Shoji M, Miyoshi Y, Kasahara Y, Kasaba Y, Kumamoto A, Tsuchiya F, Matsuda S, Matsuoka A, Teramoto M, Kazama Y, Shinohara I. Cross-Energy Couplings from Magnetosonic Waves to Electromagnetic Ion Cyclotron Waves through Cold Ion Heating inside the Plasmasphere. PHYSICAL REVIEW LETTERS 2021; 127:245101. [PMID: 34951776 DOI: 10.1103/physrevlett.127.245101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 10/06/2021] [Accepted: 11/02/2021] [Indexed: 06/14/2023]
Abstract
Using a novel wave-particle interaction analysis, we show observational evidence of energy transfer from fast magnetosonic waves (MSWs) to low-energy protons in the magnetosphere. The analysis clearly indicates that the transferred proton energies are further converted to excite electromagnetic ion cyclotron waves. Since MSWs are excited by hot ions, cross-energy coupling of ions occurs through MSWs. The result also suggests a new energy transfer path of exciting electromagnetic ion cyclotron waves in the magnetosphere, and a complex interplay between various wave modes and particle populations.
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Affiliation(s)
- Kazushi Asamura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan
| | - Masafumi Shoji
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Aichi 464-8601, Japan
| | - Yoshizumi Miyoshi
- Institute for Space-Earth Environmental Research, Nagoya University, Nagoya, Aichi 464-8601, Japan
| | - Yoshiya Kasahara
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - Yasumasa Kasaba
- Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Atsushi Kumamoto
- Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Fuminori Tsuchiya
- Graduate School of Science, Tohoku University, Sendai, Miyagi 980-8578, Japan
| | - Shoya Matsuda
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan
| | - Ayako Matsuoka
- Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan
| | - Mariko Teramoto
- Graduate School of Engineering, Kyushu Institute of Technology, Kitakyushu, Fukuoka 804-8550, Japan
| | - Yoichi Kazama
- Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan
| | - Iku Shinohara
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa 252-5210, Japan
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Shoji M, Miyoshi Y, Kistler LM, Asamura K, Matsuoka A, Kasaba Y, Matsuda S, Kasahara Y, Shinohara I. Discovery of proton hill in the phase space during interactions between ions and electromagnetic ion cyclotron waves. Sci Rep 2021; 11:13480. [PMID: 34188084 PMCID: PMC8241848 DOI: 10.1038/s41598-021-92541-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 06/08/2021] [Indexed: 11/09/2022] Open
Abstract
A study using Arase data gives the first observational evidence that the frequency drift of electromagnetic ion cyclotron (EMIC) waves is caused by cyclotron trapping. EMIC emissions play an important role in planetary magnetospheres, causing scattering loss of radiation belt relativistic electrons and energetic protons. EMIC waves frequently show nonlinear signatures that include frequency drift and amplitude enhancements. While nonlinear growth theory has suggested that the frequency change is caused by nonlinear resonant currents owing to cyclotron trapping of the particles, observational evidence for this has been elusive. We survey the wave data observed by Arase from March, 2017 to September 2019, and find the best falling tone emission event, one detected on 11th November, 2017, for the wave particle interaction analysis. Here, we show for the first time direct evidence of the formation of a proton hill in phase space indicating cyclotron trapping. The associated resonance currents and the wave growth of a falling tone EMIC wave are observed coincident with the hill, as theoretically predicted.
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Affiliation(s)
- Masafumi Shoji
- Institute for Space Earth Environmental Research, Nagoya University, Nagoya, Aichi, Japan.
| | - Yoshizumi Miyoshi
- Institute for Space Earth Environmental Research, Nagoya University, Nagoya, Aichi, Japan
| | - Lynn M Kistler
- Institute for Space Earth Environmental Research, Nagoya University, Nagoya, Aichi, Japan.,Space Science Center, University of New Hampshire, Durham, NH, USA
| | - Kazushi Asamura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa, Japan
| | - Ayako Matsuoka
- Data Analysis Center for Geomagnetism and Space Magnetism, Graduate School of Science, Kyoto University, Kyoto, Kyoto, Japan
| | - Yasumasa Kasaba
- Planetary Plasma and Atmospheric Research Center, Tohoku University, Sendai, Miyagi, Japan
| | - Shoya Matsuda
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa, Japan
| | - Yoshiya Kasahara
- Graduate School of Natural Science and Technology, Kanazawa University, Kanazawa, Ishikawa, Japan
| | - Iku Shinohara
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Kanagawa, Japan
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4
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Bouazza, F., Hassikou, R., Amallah, L., Ennadir, J., Khedid, K.. Evaluation of antibacterial activity of essential oils extracted from Thymus satureioides and Mentha pulegium against antibiotic resistance bacteria from raw sheep milk. MALAYSIAN JOURNAL OF MICROBIOLOGY 2021. [DOI: 10.1029/2010ja016000] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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5
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Gekelman W, Pribyl P, Vincena S, Tang SW, Papadopoulos K. Ferrite based antennae for launching Alfvén waves. THE REVIEW OF SCIENTIFIC INSTRUMENTS 2019; 90:083505. [PMID: 31472640 DOI: 10.1063/1.5103171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Accepted: 08/01/2019] [Indexed: 06/10/2023]
Abstract
Whistler and Alfvén waves are known to scatter mirror-trapped electrons and protons into the loss cone of the earth's dipole magnetic field. An array of satellites with properly phased antennas can be used to artificially reduce the flux of energetic particles from regions where their flux has been naturally or artificially pumped. In any space based system, the power required to drive antennas is at a premium. We present here experimental evidence that the efficiency of an antenna can be greatly enhanced with the use of ferrite cores with high relative magnetic permeability μ. Ferrite-based antennas were constructed to launch Alfvén waves in a magnetized plasma. The wave magnetic field of shear Alfvén waves launched with a ferrite core was by the magnetization factor μ larger than that of a similar antenna without a ferrite. Combining multiple ferrite antennas allowed control of the injected perpendicular wavelength. This novel technique can be used to efficiently launch low frequency waves with amplitude above the threshold required for nonlinear triggering.
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Affiliation(s)
- W Gekelman
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - P Pribyl
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - S Vincena
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - S W Tang
- Department of Physics and Astronomy, University of California, Los Angeles, California 90095, USA
| | - K Papadopoulos
- Departments of Physics and Astronomy, University of Maryland, College Park, Maryland 20742, USA
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Kitamura N, Kitahara M, Shoji M, Miyoshi Y, Hasegawa H, Nakamura S, Katoh Y, Saito Y, Yokota S, Gershman DJ, Vinas AF, Giles BL, Moore TE, Paterson WR, Pollock CJ, Russell CT, Strangeway RJ, Fuselier SA, Burch JL. Direct measurements of two-way wave-particle energy transfer in a collisionless space plasma. Science 2018; 361:1000-1003. [PMID: 30190400 DOI: 10.1126/science.aap8730] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 07/04/2018] [Indexed: 11/02/2022]
Abstract
Particle acceleration by plasma waves and spontaneous wave generation are fundamental energy and momentum exchange processes in collisionless plasmas. Such wave-particle interactions occur ubiquitously in space. We present ultrafast measurements in Earth's magnetosphere by the Magnetospheric Multiscale spacecraft that enabled quantitative evaluation of energy transfer in interactions associated with electromagnetic ion cyclotron waves. The observed ion distributions are not symmetric around the magnetic field direction but are in phase with the plasma wave fields. The wave-ion phase relations demonstrate that a cyclotron resonance transferred energy from hot protons to waves, which in turn nonresonantly accelerated cold He+ to energies up to ~2 kilo-electron volts. These observations provide direct quantitative evidence for collisionless energy transfer in plasmas between distinct particle populations via wave-particle interactions.
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Affiliation(s)
- N Kitamura
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan. .,Department of Earth and Planetary Science, Graduate School of Science, the University of Tokyo, Tokyo, Japan
| | - M Kitahara
- Department of Geophysics, Graduate School of Science, Tohoku University, Sendai, Japan
| | - M Shoji
- Institute for Space-Earth Environmental Research (ISEE), Nagoya University, Nagoya, Japan
| | - Y Miyoshi
- Institute for Space-Earth Environmental Research (ISEE), Nagoya University, Nagoya, Japan
| | - H Hasegawa
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - S Nakamura
- Research Institute for Sustainable Humanosphere (RISH), Kyoto University, Uji, Japan
| | - Y Katoh
- Department of Geophysics, Graduate School of Science, Tohoku University, Sendai, Japan
| | - Y Saito
- Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, Sagamihara, Japan
| | - S Yokota
- Department of Earth and Space Science, Graduate School of Science, Osaka University, Toyonaka, Japan
| | - D J Gershman
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - A F Vinas
- NASA Goddard Space Flight Center, Greenbelt, MD, USA.,Department of Physics, American University, Washington, DC, USA
| | - B L Giles
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - T E Moore
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | - W R Paterson
- NASA Goddard Space Flight Center, Greenbelt, MD, USA
| | | | - C T Russell
- Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA, USA
| | - R J Strangeway
- Institute of Geophysics and Planetary Physics, University of California, Los Angeles, CA, USA
| | - S A Fuselier
- Southwest Research Institute, San Antonio, TX, USA.,University of Texas at San Antonio, San Antonio, TX, USA
| | - J L Burch
- Southwest Research Institute, San Antonio, TX, USA
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7
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Shoji M, Omura Y. Simulation of electromagnetic ion cyclotron triggered emissions in the Earth's inner magnetosphere. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2010ja016351] [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)
- Masafumi Shoji
- Research Institute for Sustainable Humanosphere; Kyoto University; Kyoto Japan
| | - Yoshiharu Omura
- Research Institute for Sustainable Humanosphere; Kyoto University; Kyoto Japan
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