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Classifying the Magnetosheath Behind the Quasi-Parallel and Quasi-Perpendicular Bow Shock by Local Measurements
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics.ORCID iD: 0000-0003-1270-1616
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics.ORCID iD: 0000-0002-4381-3197
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics.
Swedish Inst Space Phys, Kiruna, Sweden..
2021 (English)In: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 126, no 9, article id e2021JA029269Article in journal (Refereed) Published
Abstract [en]

We investigate and evaluate the possibility of using local magnetosheath measurements to classify the plasma according to upstream conditions. In order to do this, we use simultaneous measurements from the Cluster spacecraft from time intervals when one of them is located in the solar wind, and the other in the magnetosheath. In particular, we study the classification of the magnetosheath plasma into the classes quasi-parallel versus quasi-perpendicular and foreshock/no foreshock (referring to the geometry of the upstream bow shock). We evaluate this method based on the magnetosheath measurements of the high-energy ion energy flux, magnetic field standard deviation, and ion temperature anisotropy. We find that the method is promising and useful, in that it eliminates the uncertainties associated with propagating upstream measurements made far from the bow shock. Finally, we discuss some possible extensions of the methodology to be investigated in the future.

Place, publisher, year, edition, pages
American Geophysical Union (AGU) , 2021. Vol. 126, no 9, article id e2021JA029269
Keywords [en]
magnetosheath, solar wind, bow shock, quasi-parallel, quasi-perpendicular, classification
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:kth:diva-303884DOI: 10.1029/2021JA029269ISI: 000702340700044Scopus ID: 2-s2.0-85115723496OAI: oai:DiVA.org:kth-303884DiVA, id: diva2:1605225
Note

QC 20211022

Available from: 2021-10-22 Created: 2021-10-22 Last updated: 2022-06-25Bibliographically approved

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Karlsson, TomasRaptis, SavvasTrollvik, Henriette

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