Statistical Survey of the Terrestrial Bow Shock Observed by the Cluster Spacecraft

0502232 - ÚFA 2020 RIV US eng J - Journal Article
Krupařová, Oksana - Krupař, Vratislav - Šafránková, J. - Němeček, Z. - Maksimovic, M. - Santolík, Ondřej - Souček, Jan - Němec, F. - Merka, J.
Statistical Survey of the Terrestrial Bow Shock Observed by the Cluster Spacecraft.
Journal of Geophysical Research-Space Physics. Roč. 124, č. 3 (2019), s. 1539-1547. ISSN 2169-9380. E-ISSN 2169-9402
R&D Projects: GA ČR(CZ) GA17-06065S; GA ČR(CZ) GA17-08772S; GA ČR(CZ) GJ17-06818Y
Grant - others:AV ČR(CZ) AP1401
Program: Akademická prémie - Praemium Academiae
Institutional support: RVO:68378289
Keywords : solar wind * bow shock
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 2.799, year: 2019
Method of publishing: Limited access
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JA026272

The terrestrial bow shock provides us with a unique opportunity to extensively investigate properties of collisionless shocks using in situ measurements under a wide range of upstream conditions. Here we report a statistical study of 529 terrestrial bow shock crossings observed between years 2001 and 2013 by the four Cluster spacecraft. By applying a simple timing method to multipoint measurements, we are able to investigate their characteristic spatiotemporal features. We have found a significant correlation between the speed of the bow shock motion and the solar wind speed. We have also compared obtained speeds with time derivatives of locations predicted by a three-dimensional bow shock model. Finally, we provide a list of bow shock crossings for possible further investigation by the scientific community.
Permanent Link: http://hdl.handle.net/11104/0294176