Response of Mars O+ pickup ions to the 8 March 2015 ICME: Inferences from MAVEN data-based models

被引：53

作者：

Curry, S. M. ^{[1
]}

Luhmann, J. G. ^{[1
]}

Ma, Y. J. ^{[2
]}

Dong, C. F. ^{[3
]}

Brain, D. ^{[4
]}

Leblanc, F. ^{[5
]}

Modolo, R. ^{[5
]}

Dong, Y. ^{[4
]}

McFadden, J. ^{[1
]}

Halekas, J. ^{[6
]}

Connerney, J. ^{[7
]}

Espley, J. ^{[7
]}

Hara, T. ^{[1
]}

Harada, Y. ^{[1
]}

Lee, C. ^{[1
]}

Fang, X. ^{[4
]}

Jakosky, B. ^{[4
]}

机构：

[1] Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA

[2] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA USA

[3] Univ Michigan, Dept Atmospher Ocean & Space Sci, Ann Arbor, MI 48109 USA

[4] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80309 USA

[5] UVSQ, LATMOS, Guyancourt, France

[6] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52242 USA

[7] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2015年 / 42卷 / 21期

关键词：

MARTIAN ATMOSPHERE; DISTRIBUTIONS;

D O I：

10.1002/2015GL065304

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

We simulate and compare three phases of the Mars-solar wind interaction with the 8 March interplanetary coronal mass ejection (ICME) event using Mars Atmosphere and Volatile EvolutioN (MAVEN) mission observations in order to derive heavy ion precipitation and escape rates. The MAVEN observations provide the initial conditions for three steady state MHD model cases, which reproduce the observed features in the solar wind density, velocity, and magnetic field seen along the MAVEN orbit. Applying the MHD results to a kinetic test particle model, we simulate global precipitation and escape maps of O+ during the (1) pre-ICME phase, (2) sheath phase, and (3) ejecta phase. We find that the Case 1 had the lowest precipitation and escape rates of 9.5x 10(25) and 4.1x 10(25) s(-1), Case 2 had the highest rates of 9.5x 10(25) and 4.1 x 10(25) s(-1), and Case 3 had rates of 3.2 x 10(25) and 1.3 x 10(25) s(-1), respectively. Additionally, Case 2 produced a high-energy escaping plume > 10 keV, which mirrored corresponding STATIC observations.

引用

页码：9095 / 9102

页数：8

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