Asymmetric Interaction of a Solar Wind Reconnecting Current Sheet and Its Magnetic Hole With Earth's Bow Shock and Magnetopause

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Asymmetric Interaction of a Solar Wind Reconnecting Current Sheet and Its Magnetic Hole With Earth's Bow Shock and Magnetopause

Madanian, Hadi (author): Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.;Southwest Res Inst, Space Sci & Engn Div, San Antonio, TX 78238 USA.

Liu, Terry Z. (author): Univ Calif Los Angeles, Los Angeles, CA USA.

Phan, Tai D. (author): Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA.

Trattner, Karlheinz J. (author): Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.

Karlsson, Tomas, 1964- (author): KTH,Rymd- och plasmafysik

Liemohn, Michael W. (author): Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA.

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Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA;Southwest Res Inst, Space Sci & Engn Div, San Antonio, TX 78238 USA. Univ Calif Los Angeles, Los Angeles, CA USA. (creator_code:org_t)

American Geophysical Union (AGU), 2022
2022
English.
In: Journal of Geophysical Research - Space Physics. - : American Geophysical Union (AGU). - 2169-9380 .- 2169-9402. ; 127:4

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

We report results of our multi-spacecraft analysis of a solar wind reconnecting current sheet (RCS) and its solar wind magnetic hole (SWMH) observed on November 20, 2018. In the solar wind, the normal vector to the current sheet plane makes an angle of 32 degrees with the Sun-Earth line. A combination of tilted current sheet plane and foreshock effects cause an asymmetric interaction with the bow shock, in which the structure arrives at the quasi-perpendicular side of the bow shock before the quasi-parallel side. The magnetic field strength inside the magnetic hole decreases by similar to 69 percent in the solar wind, with a similar depression rate observed inside the magnetosheath due to this structure. The solar wind flow slowdown and deflection during the bow shock crossing significantly disrupt the reconnection exhausts within the RCS. The interaction of the RCS and SWMH with the bow shock creates enhanced fluxes of accelerated electrons and ions. Plasma flow deflection in the magnetosheath also increases with the passage of the RCS. The ion density and temperature both increase within the current sheet to form a roughly pressure balanced structure. Field rotation and change in the dynamic pressure during this event modify the reconnection zones at the magnetopause and cause asymmetric inward motions in portions of the bow shock and the magnetopause boundaries (i.e., deformation). Unlike localized magnetosheath jets, an RCS and its associated SWMH in the solar wind have a global impact on the bow shock and the magnetopause.

Subject headings

NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geofysik (hsv//swe)
NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geophysics (hsv//eng)

Keyword

solar wind
reconnection
magnetic holes

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ref (subject category)
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By the author/editor: Madanian, Hadi; Liu, Terry Z.; Phan, Tai D.; Trattner, Karlhe ...; Karlsson, Tomas, ...; Liemohn, Michael ...

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NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Fusion Plasma an ...

NATURAL SCIENCES: NATURAL SCIENCES; and Physical Science ...; and Astronomy Astrop ...

NATURAL SCIENCES: NATURAL SCIENCES; and Earth and Relate ...; and Geophysics

Articles in the publication: Journal of Geoph ...

By the university: Royal Institute of Technology

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