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Direct observations...
Direct observations of energy transfer from resonant electrons to whistler-mode waves in magnetosheath of Earth
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- Kitamura, N. (författare)
- Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan.;Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo, Japan.
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- Amano, T. (författare)
- Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo, Japan.
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- Omura, Y. (författare)
- Kyoto Univ, Res Inst Sustainable Humanosphere, Uji, Japan.
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- Boardsen, S. A. (författare)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.;Univ Maryland Baltimore Cty, Goddard Planetary Heliophys Inst, Baltimore, MD 21228 USA.
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- Gershman, D. J. (författare)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
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- Miyoshi, Y. (författare)
- Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan.
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- Kitahara, M. (författare)
- Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi, Japan.
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- Katoh, Y. (författare)
- Tohoku Univ, Grad Sch Sci, Dept Geophys, Sendai, Miyagi, Japan.
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- Kojima, H. (författare)
- Kyoto Univ, Res Inst Sustainable Humanosphere, Uji, Japan.
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- Nakamura, S. (författare)
- Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan.
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- Shoji, M. (författare)
- Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan.
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- Saito, Y. (författare)
- Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Sagamihara, Kanagawa, Japan.
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- Yokota, S. (författare)
- Osaka Univ, Grad Sch Sci, Dept Earth & Space Sci, Toyonaka, Osaka, Japan.
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- Giles, B. L. (författare)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
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- Paterson, W. R. (författare)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
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- Pollock, C. J. (författare)
- Denali Sci, Fairbanks, AK USA.
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- Barrie, A. C. (författare)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.;Aurora Engn, Potomac, MD USA.
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- Skeberdis, D. G. (författare)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.;Ai Solut Inc, Lanham, MD USA.
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- Kreisler, S. (författare)
- NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.;Aurora Engn, Potomac, MD USA.
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- Le Contel, O. (författare)
- Sorbonne Univ, Univ Paris Saclay, Lab Phys Plasmas,CNRS, Observ Paris,Ecole Polytech Inst Polytech Paris, Paris, France.
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- Russell, C. T. (författare)
- Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA.
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- Strangeway, R. J. (författare)
- Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Los Angeles, CA USA.
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- Lindqvist, Per-Arne (författare)
- KTH,Rymd- och plasmafysik
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- Ergun, R. E. (författare)
- Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
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- Torbert, R. B. (författare)
- Univ New Hampshire, Dept Phys, Durham, NH 03824 USA.;Southwest Res Inst, San Antonio, TX USA.
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- Burch, J. L. (författare)
- Southwest Res Inst, San Antonio, TX USA.
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Nagoya Univ, Inst Space Earth Environm Res, Nagoya, Aichi, Japan;Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo, Japan. Univ Tokyo, Grad Sch Sci, Dept Earth & Planetary Sci, Tokyo, Japan. (creator_code:org_t)
- 2022-10-28
- 2022
- Engelska.
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Ingår i: Nature Communications. - : Springer Nature. - 2041-1723. ; 13:1
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Excitation of whistler-mode waves by cyclotron instability is considered as the likely generation process of the waves. Here, the authors show direct observational evidence for locally ongoing secular energy transfer from the resonant electrons to the whistler-mode waves in Earth's magnetosheath. Electromagnetic whistler-mode waves in space plasmas play critical roles in collisionless energy transfer between the electrons and the electromagnetic field. Although resonant interactions have been considered as the likely generation process of the waves, observational identification has been extremely difficult due to the short time scale of resonant electron dynamics. Here we show strong nongyrotropy, which rotate with the wave, of cyclotron resonant electrons as direct evidence for the locally ongoing secular energy transfer from the resonant electrons to the whistler-mode waves using ultra-high temporal resolution data obtained by NASA's Magnetospheric Multiscale (MMS) mission in the magnetosheath. The nongyrotropic electrons carry a resonant current, which is the energy source of the wave as predicted by the nonlinear wave growth theory. This result proves the nonlinear wave growth theory, and furthermore demonstrates that the degree of nongyrotropy, which cannot be predicted even by that nonlinear theory, can be studied by observations.
Ämnesord
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
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Kitamura, N.
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Amano, T.
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Omura, Y.
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Boardsen, S. A.
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Gershman, D. J.
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Miyoshi, Y.
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visa fler...
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Kitahara, M.
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Katoh, Y.
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Kojima, H.
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Nakamura, S.
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Shoji, M.
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Saito, Y.
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Yokota, S.
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Giles, B. L.
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Paterson, W. R.
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Pollock, C. J.
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Barrie, A. C.
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Skeberdis, D. G.
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Kreisler, S.
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Le Contel, O.
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Russell, C. T.
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Strangeway, R. J ...
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Lindqvist, Per-A ...
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Ergun, R. E.
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Torbert, R. B.
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Burch, J. L.
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