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MMS Observations of Electrostatic Waves in an Oblique Shock Crossing
Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO 80309 USA.
NASA, Goddard Space Flight Ctr, Greenbelt, MD USA.
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2018 (English)In: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 123, no 11, p. 9430-9442Article in journal (Refereed) Published
Abstract [en]

High-resolution particle and wave measurements taken during an oblique bow shock crossing by the Magnetospheric Multiscale (MMS) mission are analyzed. Two regions of differing magnetic behavior are identified within the shock, one with active magnetic fluctuations and one with laminar interplanetary magnetic field topology. A prominent reflected ion population is observed in both regions. The active magnetic region is characterized by large-amplitude (>100 mV/m) electrostatic solitary waves, electron Bernstein waves, and ion acoustic waves, along with intermittent current activity and localized electron heating. In the region of laminar magnetic field, ion acoustic waves are prominently observed. Solar wind ion deceleration is observed in both regions of active and laminar magnetic field. All observations suggest that solar wind deceleration can occur as a result of multiple independent processes, in this case current and ion-ion instabilities.

Place, publisher, year, edition, pages
AMER GEOPHYSICAL UNION , 2018. Vol. 123, no 11, p. 9430-9442
National Category
Fusion, Plasma and Space Physics Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:uu:diva-372833DOI: 10.1029/2018JA025830ISI: 000453227400037OAI: oai:DiVA.org:uu-372833DiVA, id: diva2:1276875
Available from: 2019-01-09 Created: 2019-01-09 Last updated: 2019-01-09Bibliographically approved

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Johlander, AndreasKhotyaintsev, Yuri V.

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Johlander, AndreasKhotyaintsev, Yuri V.
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Swedish Institute of Space Physics, Uppsala DivisionDepartment of Physics and Astronomy
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Journal of Geophysical Research - Space Physics
Fusion, Plasma and Space PhysicsAstronomy, Astrophysics and Cosmology

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