ELECTROMAGNETIC ION CYCLOTRON INSTABILITY IN SPACE PLASMAS

Authors

  • M. N. S. Qureshi epartment 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/vol76iss4pp%25p

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.

 

Author Biographies

  • S. T. Rizwan, Department of Physics, GC University, Lahore 54000, Pakistan

    Nil

  • I. Ahmed, Department of Physics, GC University, Lahore 54000, Pakistan

    Nil

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Published

2024-12-15

Issue

Vol. 76 No. 4 (2024): Pakistan Journal of Science

Section

Articles

License

Copyright (c) 2024 Pakistan Journal of Science

Creative Commons License

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

How to Cite

ELECTROMAGNETIC ION CYCLOTRON INSTABILITY IN SPACE PLASMAS. (2024). Pakistan Journal of Science, 76(4), 614-618. https://doi.org/10.57041/vol76iss4pp%p

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