Journal article
Plasma Parameters From Quasi-Thermal Noise Observed by Parker Solar Probe: A New Model for the Antenna Response
Journal of geophysical research. Space physics, Vol.127(4), e2021JA030182
04/2022
DOI: 10.1029/2021JA030182
Abstract
Quasi-Thermal Noise (QTN) spectroscopy is a reliable diagnostic routinely used for measuring electron density and temperature in space plasmas. The observed spectrum depends on both antenna geometry and plasma kinetic properties. Parker solar probe (PSP), launched in 2018, is equipped with an antenna system consisting of two linear dipoles with a significant gap between the antenna arms. Such a configuration, not utilized on previous missions, cannot be completely described by current models of the antenna response function. In this work, we calculate the current distribution and the corresponding response function for the PSP antenna geometry, and use these results to generate synthetic QTN spectra. Applying this model to the Encounter 7 observations from PSP provides accurate estimations of electron density and temperature, which are in very good agreement with particle analyzer measurements.
Details
- Title: Subtitle
- Plasma Parameters From Quasi-Thermal Noise Observed by Parker Solar Probe: A New Model for the Antenna Response
- Creators
- Mihailo M. Martinovic - University of ArizonaAntonije R. Dordevic - University of BelgradeKristopher G. Klein - University of ArizonaMilan Maksimovic - Sorbonne UniversitéKarine Issautier - Observatoire de ParisMingzhe Liu - Observatoire de ParisMarc Pulupa - University of California, BerkeleyStuart D. Bale - University of California, BerkeleyJasper S. Halekas - University of IowaMichael D. McManus - Univ Calif Berkeley, Space Sci Lab, Berkeley, CA 94720 USA
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.127(4), e2021JA030182
- DOI
- 10.1029/2021JA030182
- ISSN
- 2169-9380
- eISSN
- 2169-9402
- Publisher
- Amer Geophysical Union
- Number of pages
- 10
- Grant note
- CNRS (Centre National de la Recherche Scientifique); Centre National de la Recherche Scientifique (CNRS) FIELDS/RFS team CNES (Centre National d Etudes Spatiales); Centre National D'etudes Spatiales NNN06AA01C; 80NSSC19K0521 / NASA; National Aeronautics & Space Administration (NASA) Observatoire de PARIS
- Language
- English
- Date published
- 04/2022
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428820902771
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