Non-stationarity of the quasi-perpendicular bow shock: comparison between Cluster observations and simulations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F11%3A00360928" target="_blank" >RIV/68378289:_____/11:00360928 - isvavai.cz</a>

Result on the web

<a href="http://www.ann-geophys.net/29/263/2011/angeo-29-263-2011.pdf" target="_blank" >http://www.ann-geophys.net/29/263/2011/angeo-29-263-2011.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.5194/angeo-29-263-2011" target="_blank" >10.5194/angeo-29-263-2011</a>

Result language

angličtina

Original language name

Non-stationarity of the quasi-perpendicular bow shock: comparison between Cluster observations and simulations

Original language description

We performed full particle electromagnetic simulations of a quasi-perpendicular shock with parameters corresponding to the Earth's bow shock observed by Cluster on 24 January 2001. In run 1, modified two-stream instability (MTSI) is excited by the reflected solar wind ions. The waves due to the MTSI are on the whistler mode branch and have downstream directed phase velocities in the shock frame. The Poynting flux far upstream in the foot is also directed downstream. However, in the density and magneticfield compression region of the overshoot the waves are refracted and the Poynting flux in the shock frame points upstream. The MTSI is suppressed in the low mass ratio run 2, where significant reformation (?breathing) is observed. It is suggested that the high frequency upstream waves are due to the MTSI and are not related to a nonlinear phase standing whistler. Different profiles observed by different Cluster spacecraft are due to the non-stationary behavior on a larger time scale.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BL - Plasma physics and discharge through gases

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Annales Geophysicae

ISSN

0992-7689

e-ISSN

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Volume of the periodical

29

Issue of the periodical within the volume

2

Country of publishing house

DE - GERMANY

Number of pages

12

Pages from-to

263-274

UT code for WoS article

000287800700005

EID of the result in the Scopus database

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