Kinetic study of ion acoustic waves in Venusian ionosphere
Kinetic study of ion acoustic waves in Venusian ionosphere
Kinetic dispersion of the ion acoustic waves has been explored for an unmagnetized five component plasma system comprising of Venusian protons, Venusian oxygen ions, Venusian electrons, solar wind protons, and kappa electrons. The solar wind protons and electrons are assumed to be streaming along the ambient magnetic field. The plasma parameters for this study have been obtained from Lundin et al. [Icarus 215(2), 751-758 (2011)] for the dawn dusk meridian of Venus Express with the data from the ASPERA-4 ion mass analyzer. Our analysis revealed that two modes, viz., ion acoustic mode and beam driven mode, are excited for the considered plasma parameters. The ion acoustic mode exists due to the Venusian ions, and its growth rate is influenced by the solar wind beam electrons. The beam driven mode's existence and its growth rate depend on the solar wind beam protons. We conjecture that the ion acoustic mode and the beam driven mode could be useful in explaining the electrostatic noise in the Venusian ionosphere in the range of several hundreds Hz to 1 kHz and several tens kHz, respectively.
Kamalam, T.
57f5378e-6d98-469a-b248-0a4854533c57
Singh, S. V.
284663c0-0245-4995-abcc-4ce62ed395e3
Sreeraj, T.
8fe5101d-20fd-4326-b268-46f1a808f2fc
Lakhina, G. S.
303e16c9-3470-4361-8b40-1cabddc71e72
July 2023
Kamalam, T.
57f5378e-6d98-469a-b248-0a4854533c57
Singh, S. V.
284663c0-0245-4995-abcc-4ce62ed395e3
Sreeraj, T.
8fe5101d-20fd-4326-b268-46f1a808f2fc
Lakhina, G. S.
303e16c9-3470-4361-8b40-1cabddc71e72
Kamalam, T., Singh, S. V., Sreeraj, T. and Lakhina, G. S.
(2023)
Kinetic study of ion acoustic waves in Venusian ionosphere.
Physics of Plasmas, 30 (7), [072901].
(doi:10.1063/5.0145486).
Abstract
Kinetic dispersion of the ion acoustic waves has been explored for an unmagnetized five component plasma system comprising of Venusian protons, Venusian oxygen ions, Venusian electrons, solar wind protons, and kappa electrons. The solar wind protons and electrons are assumed to be streaming along the ambient magnetic field. The plasma parameters for this study have been obtained from Lundin et al. [Icarus 215(2), 751-758 (2011)] for the dawn dusk meridian of Venus Express with the data from the ASPERA-4 ion mass analyzer. Our analysis revealed that two modes, viz., ion acoustic mode and beam driven mode, are excited for the considered plasma parameters. The ion acoustic mode exists due to the Venusian ions, and its growth rate is influenced by the solar wind beam electrons. The beam driven mode's existence and its growth rate depend on the solar wind beam protons. We conjecture that the ion acoustic mode and the beam driven mode could be useful in explaining the electrostatic noise in the Venusian ionosphere in the range of several hundreds Hz to 1 kHz and several tens kHz, respectively.
Text
072901_1_5.0145486
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Accepted/In Press date: 13 June 2023
e-pub ahead of print date: 6 July 2023
Published date: July 2023
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Funding Information:
This work was carried out by T. Kamalam during her research associateship at the Indian Institute of Geomagnetism. G.S. Lakhina acknowledges the Indian National Science Academy, New Delhi, for the support under the INSA-Honorary Scientist Scheme.
Publisher Copyright:
© 2023 Author(s).
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Local EPrints ID: 480445
URI: http://eprints.soton.ac.uk/id/eprint/480445
ISSN: 1070-664X
PURE UUID: 40c6cdb9-d00d-4b60-9c92-0bcaaf67320e
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Date deposited: 02 Aug 2023 16:46
Last modified: 17 Mar 2024 13:25
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Author:
T. Kamalam
Author:
S. V. Singh
Author:
T. Sreeraj
Author:
G. S. Lakhina
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