Verification of Ion Density in Magnetosheath Using THEMIS Satellite Plasma Measurements

Authors

  • Polya Dobreva Institute of Mechanics, Bulgarian Academy of Sciences and Climate, Atmosphere and Water Research Institute, Bulgarian Academy of Sciences
  • Olga Nitcheva Institute of Mechanics, Bulgarian Academy of Sciences and Climate, Atmosphere and Water Research Institute, Bulgarian Academy of Sciences
  • Monio Kartalev Institute of Mechanics, Bulgarian Academy of Sciences

DOI:

https://doi.org/10.7546/CRABS.2022.06.09

Keywords:

gas-dynamics, magnetosheath, THEMIS satellite data, ion number density

Abstract

The objective of investigation is to trace the changes of the ion density in the magnetosheath from the magnetopause to the bow shock. The theoretical interpretation is based on the magnetosheath- magnetosphere model, where the boundaries – bow shock and magnetopause, are self-consistently determined. The parameters in the magnetosheath are described by the gas-dynamic theory, while a variant of the Tsyganenko model is used in the magnetosphere, modified to compute the magnetic field in an area with arbitrarily chosen boundary. Data of the WIND satellites are used as solar wind monitoring. Good description is obtained for the considered crossing of the satellite THEMIS (Time History of Events and Macroscale Interactions during Substorms) of both the trend and ion density values of the magnetosheath. 

Author Biographies

Polya Dobreva, Institute of Mechanics, Bulgarian Academy of Sciences and Climate, Atmosphere and Water Research Institute, Bulgarian Academy of Sciences

Mailing Address:
Institute of Mechanics,
Bulgarian Academy of Sciences
Akad. G. Bonchev St, Bl. 4
1113 Sofia, Bulgaria

and

Climate, Atmosphere and Water
Research Institute,
Bulgarian Academy of Sciences
66 Tsarigradsko Shosse Blvd
1784 Sofia, Bulgaria

E-mail: polya@imbm.bas.bg

Olga Nitcheva, Institute of Mechanics, Bulgarian Academy of Sciences and Climate, Atmosphere and Water Research Institute, Bulgarian Academy of Sciences

Mailing Address:
Institute of Mechanics,
Bulgarian Academy of Sciences
Akad. G. Bonchev St, Bl. 4
1113 Sofia, Bulgaria

and

Climate, Atmosphere and Water
Research Institute,
Bulgarian Academy of Sciences
66 Tsarigradsko Shosse Blvd
1784 Sofia, Bulgaria

E-mail: olgani@imbm.bas.bg

Monio Kartalev, Institute of Mechanics, Bulgarian Academy of Sciences

Mailing Address:
Institute of Mechanics,
Bulgarian Academy of Sciences
Akad. G. Bonchev St, Bl. 4
1113 Sofia, Bulgaria

E-mail: kartalev@geospace4.imbm.bas.bg

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Published

30-06-2022

How to Cite

[1]
P. Dobreva, O. Nitcheva, and M. Kartalev, “Verification of Ion Density in Magnetosheath Using THEMIS Satellite Plasma Measurements”, C. R. Acad. Bulg. Sci. , vol. 75, no. 6, pp. 853–860, Jun. 2022.

Issue

Section

Space Sciences