Effective electron recombination coefficient in ionospheric D-region during the relaxation regime after solar flare from February 18, 2011

Details Effective electron recombination coefficient in ionospheric D-region during the relaxation regime after solar flare from February 18, 2011 Effective electron recombination coefficient in ionospheric D-region during the relaxation regime after solar flare from February 18, 2011

2012-04-19

arxiv.org/abs/1204.4309v1

Nuclear Instruments and Methods in Physics Research B 279 (2012) 106-109

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

Scientific paper

10.1016/j.nimb.2011.10.026

In this paper, we present a model for determination of a weakly time dependent effective recombination coefficient for the perturbed terrestrial ionospheric D-region plasma. We study consequences of a class M1.0 X-ray solar flare, recorded by GOES-15 satellite on February 18, 2011 between 14:00 UT and 14:15 UT, by analyzing the amplitude and phase real time variations of very low frequency (VLF) radio waves emitted by transmitter DHO (located in Germany) at frequency 23.4 kHz and recorded by the AWESOME receiver in Belgrade (Serbia). Our analysis is limited to ionospheric perturbations localized at altitudes around 70 km where the dominant electron gain and electron loss processes are the photo-ionization and recombination respectively.

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