Details

Autor(en) / Beteiligte

• Goodrich, Katherine A.
• Ergun, Robert
• Schwartz, Steven J.
• Wilson, Lynn B., III
• Newman, David
• Wilder, Frederick D.
• Holmes, Justin
• Johlander, Andreas
• Burch, James
• Torbert, Roy
• Khotyaintsev, Yuri
• Lindqvist, Per-Arne
• Strangeway, Robert
• Russell, Christopher
• Gershman, Daniel
• Giles, Barbara
• Andersson, Laila

Titel

MMS Observations of Electrostatic Waves in an Oblique Shock Crossing

Ist Teil von

• Journal of geophysical research. Space physics, 2018-11, Vol.123 (11), p.9430-9442

Ort / Verlag

Goddard Space Flight Center: American Geophysical Union (AGU)

Erscheinungsjahr

2018

Quelle

Wiley Online Library Journals

Beschreibungen/Notizen

• 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.