Skip to Main content Skip to Navigation
New interface
Journal articles

Properties of a Supercritical Quasi-perpendicular Interplanetary Shock Propagating in the Terrestrial Foreshock Region

Abstract : We investigate the properties of an interplanetary (IP) shock (M f = 2.1, θ = 80°) that was detected by Wind on 1999 September 12 and was magnetically connected to the terrestrial bow shock. Key results are obtained concerning how the IP shock modifies the terrestrial foreshock electron and ion dynamics: (1) Intensive Langmuir waves were detected downstream of the IP shock due to the enhanced penetrating terrestrial foreshock electron beams. (2) Whistler heat flux instabilities associated with the oblique precursor whistler pitch-angle scatter the suprathermal electrons, together with the normal betatron acceleration that occurs across the IP shock. (3) The IP shock interacts with the antisunward propagating Alfvén waves/fluctuations, and the shocked plasma shows both Alfvénic and mirror-mode features where Alfvén waves were separated into two parts propagating in opposite directions. (4) Intense specularly reflected gyrating ions were detected around the IP shock, which indicates that the energy dissipation effects at the IP shock depend on both reflected ions and the waves intrinsic to the shock. These results provide new insights into the interaction between an IP shock and the terrestrial foreshock. Unified Astronomy Thesaurus concepts: Solar wind (1534); Interplanetary shocks (829); Alfven waves (23); Shocks (2086); Planetary bow shocks (1246)
Complete list of metadata

https://hal-insu.archives-ouvertes.fr/insu-03849861
Contributor : Catherine Cardon Connect in order to contact the contributor
Submitted on : Saturday, November 12, 2022 - 1:06:34 PM
Last modification on : Tuesday, December 6, 2022 - 4:10:07 AM

File

Liu_2022_ApJS_263_11.pdf
Publisher files allowed on an open archive

Licence


Distributed under a Creative Commons Attribution - NonCommercial 4.0 International License

Identifiers

Citation

Mingzhe Liu, Zhongwei Yang, Ying D. Liu, Bertrand Lembège, Karine Issautier, et al.. Properties of a Supercritical Quasi-perpendicular Interplanetary Shock Propagating in the Terrestrial Foreshock Region. The Astrophysical Journal Supplement Series, 2022, 263 (November), 11 (15p.). ⟨10.3847/1538-4365/ac94c8⟩. ⟨insu-03849861⟩

Share

Metrics

Record views

0

Files downloads

0