Statistical survey of the terrestrial bow shock observed by the Cluster spacecraft

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dc.contributor.authorKruparova, O.
dc.contributor.authorKrupar, V.
dc.contributor.authorŠafránková, J.
dc.contributor.authorNěmeček, Z.
dc.contributor.authorMaksimovic, M.
dc.contributor.authorSantolik, O.
dc.contributor.authorSoucek, J.
dc.contributor.authorNěmec, F.
dc.contributor.authorMerka, J.
dc.date.accessioned2019-03-06T16:41:07Z
dc.date.available2019-03-06T16:41:07Z
dc.date.issued2019-02-13
dc.description.abstractThe 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. Plain Language Summary The Sun is continuously emitting a stream of charged particles—called the solar wind—from its upper atmosphere. The terrestrial magnetosphere forms the obstacle to its flow. Due to supersonic speed of the solar wind, the bow shock is created ahead of the magnetosphere. This abrupt transition region between supersonic and subsonic flows has been frequently observed by the four Cluster spacecraft. Using a timing analysis, we have retrieved speed and directions of the bow shock motion for a large number of crossings. We have correlated the bow shock speed with the solar wind speed and predictions of the bow shock locations by the empirical model. A better understanding of the bow shock kinematics may bring new insights to wave‐particle interactions with applications in laboratory plasmas.en_US
dc.description.sponsorshipCzech Science Foundation. Grant Numbers: 17-06065S, 16-04956S, 17-08772S, 18-00844S, 17-06818Y MSMT. Grant Number: LTAUSA17070 NASA postdoctoral program at the NASA Goddard Space Flight Center The Czech Academy of Sciences. Grant Number: The Praemium Academiae awarden_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2018JA026272en_US
dc.format.extent9 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2qaco-g8wn
dc.identifier.citationKruparova, O., Krupar, V., Šafránková, J., N ˇ eme ˇ cek, Z., Maksimovic, M., Santolik, O., et al. (2019). Statistical survey of the terrestrial bow shock observed by the Cluster spacecraft. Journal of Geophysical Research: Space Physics, 124. https://doi.org/10.1029/2018JA026272en_US
dc.identifier.urihttps://doi.org/10.1029/2018JA026272
dc.identifier.urihttp://hdl.handle.net/11603/12953
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Goddard Planetary Heliophysics Institute (GPHI)
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
dc.rights©2019 American Geophysical Union. All Rights Reserved.
dc.subjectterrestrial bow shocken_US
dc.subjectproperties of collisionless shocks
dc.subjectin situ measurements under a wide range of upstream conditions
dc.subjectapplication of a a simple timing method to multipoint measurements to investigate their characteristic spatiotemporal features
dc.subjectspeed of the bow shock motion
dc.subjectsolar wind speed
dc.subjectthree‐dimensional bow shock model
dc.titleStatistical survey of the terrestrial bow shock observed by the Cluster spacecraften_US
dc.typeTexten_US

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