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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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The collisionless shocks are very complicated and important field of nowadays researches. We used the data measured by the plasma spectrometer BMSW (Bright Monitor of Solar Wind) to investigate variations of parameters of twice-ionized helium ions He++ in the solar wind during the interplanetary shock passage. It was shown that the changes of He++ abundance are depended of interplanetary shock parameters.
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https://doi.org/10.5194/angeo-2020-72
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/angeo-2020-72
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
Preprints

  16 Dec 2020

16 Dec 2020

Review status: this preprint is currently under review for the journal ANGEO.

Dynamics of He++ ions at interplanetary shocks

Olga V. Sapunova, Natalia L. Borodkova, Georgii N. Zastenker, and Yuri I. Yermolaev Olga V. Sapunova et al.
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  • Space Research Institute of the Russian Academy of Sciences, Moscow, Russia
Received: 27 Oct 2020 – Accepted for review: 01 Dec 2020 – Discussion started: 16 Dec 2020

Abstract. Variations of parameters of twice-ionized helium ions – He++ ions or α-particles – in the solar wind plasma during the interplanetary shock front passage are investigated. We used the data measured by the BMSW (Bright Monitor of Solar Wind) instrument installed on the SPEKTR-R satellite, which operated since August 2011 to 2019 and registered 57 interplanetary shocks. According to received data, the parameters of He++ ions were calculated: velocity Vα, temperature Tα, absolute density Nα and relative density (helium abundance) Nα/Np. The correlation of changes in helium abundance Nα/Np with the parameters βi, θBn and MMS were investigated.

How to cite. Sapunova, O. V., Borodkova, N. L., Zastenker, G. N., and Yermolaev, Y. I.: Dynamics of He++ ions at interplanetary shocks, Ann. Geophys. Discuss. [preprint], https://doi.org/10.5194/angeo-2020-72, in review, 2020.

Olga V. Sapunova et al.

 
Status: open (until 28 Feb 2021)
Status: open (until 28 Feb 2021)
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Olga V. Sapunova et al.

Olga V. Sapunova et al.

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Short summary
The collisionless shocks are very complicated and important field of nowadays researches. We used the data measured by the plasma spectrometer BMSW (Bright Monitor of Solar Wind) to investigate variations of parameters of twice-ionized helium ions He++ in the solar wind during the interplanetary shock passage. It was shown that the changes of He++ abundance are depended of interplanetary shock parameters.
Read more
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Annales Geophysicae

An interactive open-access journal of the European Geosciences Union

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