Annales Geophysicae
Annales Geophysicae
ANGEO
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Preprints
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
Status: this preprint has been withdrawn by the authors.

Dynamics of He++ ions at interplanetary shocks

Olga V. Sapunova, Natalia L. Borodkova, Georgii N. Zastenker, and Yuri I. Yermolaev

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.

This preprint has been withdrawn.

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, 2020.
Received: 27 Oct 2020 – Discussion started: 16 Dec 2020
Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
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Olga V. Sapunova, Natalia L. Borodkova, Georgii N. Zastenker, and Yuri I. Yermolaev

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Olga V. Sapunova, Natalia L. Borodkova, Georgii N. Zastenker, and Yuri I. Yermolaev
Olga V. Sapunova, Natalia L. Borodkova, Georgii N. Zastenker, and Yuri I. Yermolaev

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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.
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