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Currents and associated electron scattering and bouncing near the diffusion region at Earth's magnetopause
Lavraud, B.; Zhang, Y. C.; Vernisse, Y.; Gershman, D. J.; Dorelli, J.; Cassak, P. A.; Dargent, J.; Pollock, C.; Giles, B.; Aunai, N.; Argall, M.; Avanov, L.; Barrie, A.; Burch, J.; Chandler, M.; Chen, L. -J.; Clark, G.; Cohen, I.; Coffey, V.; Eastwood, J. P.; Egedal, J.; Eriksson, S.; Ergun, R.; Farrugia, C. J.; Fuselier, S. A.; Genot, V.; Graham, D.; Grigorenko, E.; Hasegawa, H.; Jacquey, C.; Kacem, I.; Khotyaintsev, Y.; MacDonald, E.; Magnes, W.; Marchaudon, A.; Mauk, B.; Moore, T. E.; Mukai, T.; Nakamura, R.; Paterson, W.; Penou, E.; Phan, T. D.; Rager, A.; Retino, A.; Rong, Z. J.; Russell, C. T.; Saito, Y.; Sauvaud, J. -A.; Schwartz, S. J.; Shen, C.; Smith, S.; Strangeway, R.; Toledo-Redondo, S.; Torbert, R.; Turner, D. L.; Wang, S.; Yokota, S.; Lavraud, B (reprint author), Univ Toulouse, Inst Rech Astrophys & Planetol, Toulouse, France.
Department空间科学部
Source PublicationGEOPHYSICAL RESEARCH LETTERS
2016
Volume43Issue:7Pages:3042-3050
ISSN0094-8276
Language英语
AbstractBased on high-resolution measurements from NASA's Magnetospheric Multiscale mission, we present the dynamics of electrons associated with current systems observed near the diffusion region of magnetic reconnection at Earth's magnetopause. Using pitch angle distributions (PAD) and magnetic curvature analysis, we demonstrate the occurrence of electron scattering in the curved magnetic field of the diffusion region down to energies of 20 eV. We show that scattering occurs closer to the current sheet as the electron energy decreases. The scattering of inflowing electrons, associated with field-aligned electrostatic potentials and Hall currents, produces a new population of scattered electrons with broader PAD which bounce back and forth in the exhaust. Except at the center of the diffusion region the two populations are collocated and appear to behave adiabatically: the inflowing electron PAD focuses inward (toward lower magnetic field), while the bouncing population PAD gradually peaks at 90 degrees away from the center (where it mirrors owing to higher magnetic field and probable field-aligned potentials).
Indexed BySCI ; EI
Document Type期刊论文
Identifierhttp://ir.nssc.ac.cn/handle/122/5437
Collection空间科学部
Corresponding AuthorLavraud, B (reprint author), Univ Toulouse, Inst Rech Astrophys & Planetol, Toulouse, France.
Recommended Citation
GB/T 7714
Lavraud, B.,Zhang, Y. C.,Vernisse, Y.,et al. Currents and associated electron scattering and bouncing near the diffusion region at Earth's magnetopause[J]. GEOPHYSICAL RESEARCH LETTERS,2016,43(7):3042-3050.
APA Lavraud, B..,Zhang, Y. C..,Vernisse, Y..,Gershman, D. J..,Dorelli, J..,...&Lavraud, B .(2016).Currents and associated electron scattering and bouncing near the diffusion region at Earth's magnetopause.GEOPHYSICAL RESEARCH LETTERS,43(7),3042-3050.
MLA Lavraud, B.,et al."Currents and associated electron scattering and bouncing near the diffusion region at Earth's magnetopause".GEOPHYSICAL RESEARCH LETTERS 43.7(2016):3042-3050.
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