Skip to main content
SpringerLink
Log in

Behavior of He++ Ions at the Front of an Interplanetary Shock

  • Published:
Geomagnetism and Aeronomy Aims and scope Submit manuscript

Abstract

The variations in the parameters of twice ionized helium ions He++ of solar wind plasma during the passage of the front of the interplanetary shock are studied. Data taken from measurements by the Bright Monitor of Solar Wind (BMSW) installed onboard SPEKTR-R satellite were used to calculate the parameters of the He++ ions: the speed, temperature, and absolute and relative density (helium abundance). It was found that the absolute density of He++ ions behind the front of the interplanetary shock increases and that the relative density decreases. The average helium abundance behind the shock front was slightly less (by 9%) than that in the unperturbed region. The change in helium abundance correlated with the parameter θBn: the lower the θBn value is, the higher helium abundance decrease behind the front of the interplanetary shock.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Fig. 5.
Fig. 6.
Fig. 7.

Similar content being viewed by others

REFERENCES

  1. Borodkova, N.L., Vaisberg, O.L., and Zastenker, G.N., Interplanetary shock waves in the post solar maximum year period (January–July, 1981), Adv. Space Res., 1986, vol. 6, no. 6, pp. 327–330.

    Article  Google Scholar 

  2. Borrini, G., Gosling, J.T., Bame, S.J., and Feldman, W.C., An analysis of shock wave disturbances observed at 1 AU from 1971 through 1978, J. Geophys. Res., 1982, vol. 87, no. A6, pp. 4365–4373.

    Article  Google Scholar 

  3. Ermolaev, Yu.I., Observations of He++ ions in the solar wind, Kosm. Issled., 1994, vol. 32, no. 1, pp. 93–125.

    Google Scholar 

  4. Eselevich, V.G., Borodkova, N.L., Eselevich, M.V., Zastenker, G.N., Šafránkova, J., Němeček, Z., and Přech, L., Fine structure of the interplanetary shock front according to measurements of the ion flux of the solar wind with high time resolution, Cosmic Res., 2017, vol. 55, no. 1, pp. 30–55.

    Article  Google Scholar 

  5. Formisano, V., Palmiotto, F., and Moreno, G., α-particle observations in the solar wind, Sol. Phys., 1970, vol. 15, no. 2, pp. 479–498.

    Article  Google Scholar 

  6. Gosling, J.T., Asbridge, J.R., Bame, S.J., and Paschmann, G., and Sckopke, N., Observation of two distinct population of bow shock ions in the upstream solar wind, Geophys. Res. Lett., 1978, vol. 5, pp. 957–960.

    Article  Google Scholar 

  7. Němeček, Z., Šafránkova, J., Goncharov, O., Přech, L., and Zastenker, G.N., Ion scales of quasi-perpendicular interplanetary shocks, Geophys. Res. Lett., 2013, vol. 40, no. 16, pp. 4133–4137. https://doi.org/10.1002/grl.50814

    Article  Google Scholar 

  8. Ogilvie, K.W. and Wilkerson, T.D., Helium abundance in the solar wind, Sol. Phys., 1969, vol. 8, no. 2, pp. 435–449.

    Article  Google Scholar 

  9. Šafránkova, J., Němeček, Z., Přech, L., et al., Fast solar wind monitor (BMSW): Description and first results, Space Sci. Rev., 2013, vol. 175, nos. 1–4, pp. 165–182.

    Article  Google Scholar 

  10. Scholer, M., Diffusions at quasi-parallel collisionless shocks: simulations, Geophys. Res. Lett., 1990, vol. 17, pp. 1821–1824.

    Article  Google Scholar 

  11. Scholer, M. and Terasawa, T., Ion reflection and dissipation at quasiparallel collisionless shocks, Geophys. Res. Lett., 1990, vol. 17, pp. 119–122.

    Article  Google Scholar 

  12. Trattner, K.J. and Scholer, M., Diffuse alpha particles upstream of simulated quasi-parallel supercritical collisionless shocks, Geophys. Res. Lett., 1991, vol. 18, no. 10, pp. 1817–1820.

    Article  Google Scholar 

  13. Volkmer, P.M. and Neubauer, F.M., Statistical properties of fast magnetoacoustic shock waves in the solar wind between 0.3 AU and 1 AU: Helios-1, 2 observations, Ann. Geophys., 1985, vol. 3, no. 1, pp. 1–12.

    Google Scholar 

  14. Zastenker, G.N., Šafránkova, J., Němeček, Z., et al., Fast measurements of parameters of the solar wind using the BMSW instrument, Cosmic Res., 2013, vol. 51, no. 2, pp. 78–89.

    Article  Google Scholar 

Download references

8. ACKNOWLEDGMENTS

The authors are grateful to the National Aeronautics and Space Administration Coordinated Data Analysis Web (NASA CDAWeb) for the opportunity to use data on plasma and magnetic field parameters measured by the WIND and Cluster satellites.

Funding

This work was supported by the Russian Science Foundation, grant no. 16-12-10062.

Author information

Authors and Affiliations

  1. Space Research Institute, Russian Academy of Sciences, Moscow, Russia

    O. V. Sapunova, N. L. Borodkova, G. N. Zastenker & Yu. I. Yermolaev

Authors
  1. O. V. Sapunova
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. N. L. Borodkova
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. G. N. Zastenker
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Yu. I. Yermolaev
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to O. V. Sapunova.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Sapunova, O.V., Borodkova, N.L., Zastenker, G.N. et al. Behavior of He++ Ions at the Front of an Interplanetary Shock. Geomagn. Aeron. 60, 708–713 (2020). https://doi.org/10.1134/S0016793220060122

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1134/S0016793220060122

Search

Navigation