Solar Wind Proton Deceleration in Front of the Terrestrial Bow Shock

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378289%3A_____%2F19%3A00509742" target="_blank" >RIV/68378289:_____/19:00509742 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/19:10405935

Result on the web

<a href="https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019JA026734" target="_blank" >https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2019JA026734</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2019JA026734" target="_blank" >10.1029/2019JA026734</a>

Result language

angličtina

Original language name

Solar Wind Proton Deceleration in Front of the Terrestrial Bow Shock

Original language description

The terrestrial foreshock as a region permeated by different types of plasma waves, various particle populations, and strong wave activity is a subject of intensive investigations. Our statistical study of the solar wind proton velocity deceleration in the foreshock uses multipoint observations of the THEMIS mission and compare them with the Wind solar wind monitor with a motivation to estimate the factors influencing evolution/modification of the solar wind speed. In order to follow changes of the solar wind proton speed, our moment calculations do not include the reflected particles as well as heavier ions. We have found a systematic deceleration of the solar wind protons with a decreasing distance to the bow shock that is correlated with the flux of reflected and accelerated particles, with the level of magnetic field fluctuations in the ultralow frequency range, and with their compressibility. We can conclude that the reflected particles excite waves of large amplitudes and, as a consequence, modify median values of the velocity measured in an unperturbed solar wind. The deceleration is as high as 3% in front of the quasi‐parallel bow shock and decreases with the distance being observable up to 50 RE. We found similar effects in front of the Moon and attributed them to an influence of the solar wind ions reflected from the lunar surface.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

<a href="/en/project/GA17-06065S" target="_blank" >GA17-06065S: Solar wind variations and their impact on magnetospheric dynamics</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

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

Name of the periodical

Journal of Geophysical Research: Space Physics

ISSN

2169-9380

e-ISSN

—

Volume of the periodical

124

Issue of the periodical within the volume

8

Country of publishing house

US - UNITED STATES

Number of pages

13

Pages from-to

6553-6565

UT code for WoS article

000490956600011

EID of the result in the Scopus database

2-s2.0-85070514066