DOI: 10.1002/2015GL066850
论文题名: MESSENGER observations of suprathermal electrons in Mercury's magnetosphere
作者: Ho G.C. ; Starr R.D. ; Krimigis S.M. ; Vandegriff J.D. ; Baker D.N. ; Gold R.E. ; Anderson B.J. ; Korth H. ; Schriver D. ; McNutt R.L. ; Jr. ; Solomon S.C.
刊名: Geophysical Research Letters
ISSN: 0094-9442
EISSN: 1944-9173
出版年: 2016
卷: 43, 期: 2 起始页码: 550
结束页码: 555
语种: 英语
英文关键词: magnetosphere
; Mercury
; particles
Scopus关键词: Electrons
; Elementary particles
; Magnetosphere
; Orbits
; Tracking (position)
; X ray spectrometers
; Accelerated electrons
; Co-ordinate system
; Fluorescent X ray
; Magnetic field modeling
; Mercury's magnetosphere
; Space environment
; Suprathermal electrons
; Trapped electrons
; Mercury (metal)
; algorithm
; electron
; magnetic field
; magnetosphere
; Mercury (planet)
; spacecraft
英文摘要: The X-Ray Spectrometer (XRS) on the MErcury Surface, Space ENvironment, GEochemistry, and Ranging spacecraft regularly detected fluorescent X-rays near Mercury induced by low-energy (1-10 keV) or suprathermal electrons. We devised an algorithm to select these events from XRS records between April 2011 and March 2015 on the basis of their duration, location, and spectral slope. We identified 3102 events during 3900 orbits around Mercury, sampling all Mercury longitudes multiple times over the 4 year period. These suprathermal electrons were present near the planet at all local times, but the majority were on the nightside of the planet, and a dawn-dusk asymmetry is seen in the data. When the event locations are plotted in a coordinate system based on a simplified magnetic field model, several distinct clusters of events are evident. We infer that all are signatures of accelerated electrons that were injected from Mercury's tail region to form a quasi-trapped electron population at Mercury. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84958046712&doi=10.1002%2f2015GL066850&partnerID=40&md5=5ba02f58d733593c22c1cd367d79f74e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10405
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
Recommended Citation:
Ho G.C.,Starr R.D.,Krimigis S.M.,et al. MESSENGER observations of suprathermal electrons in Mercury's magnetosphere[J]. Geophysical Research Letters,2016-01-01,43(2).