ELECTROMAGNETIC ION CYCLOTRON INSTABILITY IN SPACE PLASMAS

Authors

  • M. N. S. Qureshi Department of Physics, GC University, Lahore 54000, Pakistan
  • S. T. Rizwan Department of Physics, GC University, Lahore 54000, Pakistan
  • I. Ahmed Department of Physics, GC University, Lahore 54000, Pakistan

DOI:

https://doi.org/10.57041/vol76iss04pp614-618

Keywords:

EMIC waves; Ion distribution function; Non-Maxwellian distributions.

Abstract

This study presents observations of ion waves having low-frequencies and their associated ion velocity distribution functions (VDFs) from the Earth’s magnetosphere and solar wind, using the data from Cluster mission. The ion VDFs observed are characterized as non-Maxwellian, comprising a predominant cold component alongside hot tenuous components. We derive the dispersion relation of low-frequency ion waves, by fitting the parameters of observed VDFs, and numerically obtained the instabilitygrowth rate. We further investigate the influence of superthermal particles on the instability.

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Published

2024-12-15

How to Cite

M. N. S. Qureshi, S. T. Rizwan, & I. Ahmed. (2024). ELECTROMAGNETIC ION CYCLOTRON INSTABILITY IN SPACE PLASMAS. Pakistan Journal of Science, 76(04), 614–618. https://doi.org/10.57041/vol76iss04pp614-618

Issue

Vol. 76 No. 04 (2024): Pakistan Journal of Science

Section

Articles

License

Creative Commons License

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.

http://creativecommons.org/licenses/by-sa/4.0