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WFRF:(Hao Yi Xin)
 

Sökning: WFRF:(Hao Yi Xin) > Off-Equatorial Mini...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00003386naa a2200445 4500
001oai:DiVA.org:kth-303941
003SwePub
008211025s2021 | |||||||||||000 ||eng|
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3039412 URI
0247 a https://doi.org/10.1029/2021GL0956482 DOI
040 a (SwePub)kth
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Li, Xing-Yuu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut
2451 0a Off-Equatorial Minima Effects on ULF Wave-Ion Interaction in the Dayside Outer Magnetosphere
264 1b American Geophysical Union (AGU),c 2021
338 a print2 rdacarrier
500 a QC 20211025
520 a The ultra-low frequency wave-particle drift-bounce resonance in the inner magnetosphere has been studied in detail, due to its important role in particle energization. However, it remains an open question how drift-bounce resonance manifests in the dayside outer magnetosphere, where particles' orbits show bifurcations because of off-equatorial magnetic field minima. In this study, we investigate this question, by analyzing Magnetospheric Multiscale observations of the January 20, 2017 event. A test-particle simulation is conducted to help us understand the observations. The observed pitch angle-time spectrograms show "pawtrack-like" structures. We find there are more than two resonant pitch angles at fixed energy, since off-equatorial minima change the relationship between the bounce (drift) frequency and pitch angle from unimodal function to trimodal function. These results reveal a new drift-bounce acceleration mechanism in the dayside outer magnetosphere, which potentially affects the efficiency of particle energization during geomagnetic activities like geomagnetic storms.
650 7a NATURVETENSKAPx Fysikx Fusion, plasma och rymdfysik0 (SwePub)103032 hsv//swe
650 7a NATURAL SCIENCESx Physical Sciencesx Fusion, Plasma and Space Physics0 (SwePub)103032 hsv//eng
653 a ultra-low frequency wave
653 a wave-particle interaction
653 a outer magnetosphere
653 a particle acceleration
653 a drift-bounce resonance
653 a dayside magnetosphere
7001 a Liu, Zhi-Yangu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut
7001 a Zong, Qiu-Gangu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut
7001 a Zhou, Xu-Zhiu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut
7001 a Hao, Yi-Xinu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut
7001 a Pollock, Craig J.u Denali Sci, Fairbanks, AK USA.4 aut
7001 a Russell, Christopher T.u Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90024 USA.4 aut
7001 a Lindqvist, Per-Arneu KTH,Rymd- och plasmafysik4 aut0 (Swepub:kth)u1yukyk9
7102 a Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.b Denali Sci, Fairbanks, AK USA.4 org
7730 t Geophysical Research Lettersd : American Geophysical Union (AGU)g 48:18q 48:18x 0094-8276x 1944-8007
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-303941
8564 8u https://doi.org/10.1029/2021GL095648

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