Sökning: onr:"swepub:oai:DiVA.org:kth-303941" > Off-Equatorial Mini...
Fältnamn | Indikatorer | Metadata |
---|---|---|
000 | 03386naa a2200445 4500 | |
001 | oai:DiVA.org:kth-303941 | |
003 | SwePub | |
008 | 211025s2021 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3039412 URI |
024 | 7 | a https://doi.org/10.1029/2021GL0956482 DOI |
040 | a (SwePub)kth | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Li, Xing-Yuu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut |
245 | 1 0 | a Off-Equatorial Minima Effects on ULF Wave-Ion Interaction in the Dayside Outer Magnetosphere |
264 | 1 | b 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 | 7 | a NATURVETENSKAPx Fysikx Fusion, plasma och rymdfysik0 (SwePub)103032 hsv//swe |
650 | 7 | a 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 | |
700 | 1 | a Liu, Zhi-Yangu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut |
700 | 1 | a Zong, Qiu-Gangu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut |
700 | 1 | a Zhou, Xu-Zhiu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut |
700 | 1 | a Hao, Yi-Xinu Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.4 aut |
700 | 1 | a Pollock, Craig J.u Denali Sci, Fairbanks, AK USA.4 aut |
700 | 1 | a Russell, Christopher T.u Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90024 USA.4 aut |
700 | 1 | a Lindqvist, Per-Arneu KTH,Rymd- och plasmafysik4 aut0 (Swepub:kth)u1yukyk9 |
710 | 2 | a Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China.b Denali Sci, Fairbanks, AK USA.4 org |
773 | 0 | t Geophysical Research Lettersd : American Geophysical Union (AGU)g 48:18q 48:18x 0094-8276x 1944-8007 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-303941 |
856 | 4 8 | u https://doi.org/10.1029/2021GL095648 |
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