MESSENGER observations of Mercury's magnetosphere during northward IMF

被引：48

作者：

Slavin, James A. ^{[1
]}

Anderson, Brian J. ^{[3
]}

Zurbuchen, Thomas H. ^{[5
]}

Baker, Daniel N. ^{[4
]}

Krimigis, Stamatios M. ^{[3
]}

Acuna, Mario H. ^{[2
]}

Benna, Mehdi ^{[2
]}

Boardsen, Scott A. ^{[1
]}

Gloeckler, George ^{[5
]}

Gold, Robert E. ^{[3
]}

Ho, George C. ^{[3
]}

Korth, Haje ^{[3
]}

McNutt, Ralph L., Jr. ^{[3
]}

Raines, Jim M. ^{[5
]}

Sarantos, Menelaos ^{[1
]}

Schriver, David ^{[6
]}

Solomon, Sean C. ^{[7
]}

Travnicek, Pavel ^{[8
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Heliophys Sci Div, Greenbelt, MD 20771 USA

[2] NASA, Goddard Space Flight Ctr, Solar Syst Explorat Div, Greenbelt, MD 20771 USA

[3] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD 20723 USA

[4] Univ Colorado, Atmospher & Space Phys Lab, Boulder, CO 80303 USA

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

[6] Univ Calif Los Angeles, Dept Geophys & Planetary Phys, Los Angeles, CA 90024 USA

[7] Carnegie Inst Sci, Dept Terr Magnetism, Washington, DC 20015 USA

[8] Acad Sci Czech Republic, Inst Astron, CZ-14131 Prague, Czech Republic

来源：

GEOPHYSICAL RESEARCH LETTERS | 2009年 / 36卷

关键词：

GEOTAIL OBSERVATIONS; TERRESTRIAL PLANETS; 1ST FLYBY; MAGNETOTAIL; FLOW;

D O I：

10.1029/2008GL036158

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

MESSENGER's January 14, 2008, flyby of Mercury has provided new observations of the planet's magnetosphere for northward interplanetary magnetic field (IMF). The dusk magnetopause was located inward from the mean magnetopause surface, possibly due to reduced tail magnetic flux content for IMF B-z > 0 and/ or the pressure of planetary pickup ions as they respond to the dawnward -v X B electric field in the magnetosheath. Within the plasma sheet rotations of the magnetic field are observed consistent with, Kelvin-Helmholtz vortices similar to 1 R-M in diameter (RM is Mercury's radius). MESSENGER exited through a 1,000 km-wide boundary layer bordered by inner and outer current sheets that resemble rotational and tangential discontinuities, respectively. The total magnetic field change across this layer is consistent with the predicted solar wind ram pressure at Mercury during the MESSENGER flyby. Citation: Slavin, J. A., et al. (2009), MESSENGER observations of Mercury's magnetosphere during northward IMF, Geophys. Res. Lett., 36, L02101, doi:10.1029/2008GL036158.

引用

页数：6

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