Abstract
In this paper, we study electron loss rate resulting from recombination processes in the upper part of the ionospheric D-region after being influenced by a solar X-ray flare activity. We analyse the altitude and time dependences of the governing plasma electron loss rate and its spatial and temporal derivatives. The presented numerical modelling is based on data recorded through remote sensing of the lower ionosphere utilizing the reflected very low-frequency radio signal emitted by the DHO transmitter in Germany and received in Belgrade, Serbia. Ionospheric parameters were calculated by a procedure based on a comparison of the observed changes in the signal amplitude and phase with their values modelled by the Long-Wave Propagation Capability numerical model. We consider the time period after influence of the solar X-ray flare of the class C8.8 occurred on 5 May, 2010 between 11:37 UT and 11:58 UT with the maximum at 11:52 UT. Due to the same tendencies of the D-region plasma parameters variation, the obtained conclusions can be extended and generalized to any solar X-ray flare.
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Data Availability Statement
This manuscript has no associated data or the data will not be deposited. [Authors’ comment: The data for this paper collected by the GOES-14 satellite are available at NOAA’s National Centers for Environmental information (http://satdat.ngdc.noaa.gov/sem/goes/data/new_full/2010/05/goes14/csv). Requests for the VLF data used for analysis can be directed to the corresponding author.]
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Acknowledgements
The authors acknowledge funding provided by the Institute of Physics Belgrade and the Astronomical Observatory (the contract 451-03-68/2020-14/200002) through the grants by the Ministry of Education, Science, and Technological Development of the Republic of Serbia. The authors are grateful to the anonymous reviewers and editor for comments and suggestions that improved this paper.
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Advances in Physics of Ionized Gases and Spectroscopy of Isolated Complex Systems: from Biomolecules to Space Particles - SPIG 2020. Guest editors: Duško Borka, Dragana Ili, Aleksandar Milosavljevic, Christophe Nicolas, Vladimir Srećković, Luka Č. Popović, Sylwia Ptasinska.
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Nina, A., Čadež, V.M. Variation of electron loss rate due to recombination processes in the upper ionospheric D-region plasma after a solar X-ray flare: a study case. Eur. Phys. J. D 75, 97 (2021). https://doi.org/10.1140/epjd/s10053-021-00115-6
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DOI: https://doi.org/10.1140/epjd/s10053-021-00115-6