TY - JOUR
TI - Variations in ionospheric D-region recombination properties during increase of its X-ray heating induced by solar X-ray flare
AU - Nina Aleksandra
AU - Čadež Vladimir M
AU - Lakić́ević Maša D
AU - Radovanović Milan R
AU - Kolarski Aleksandra B
AU - Popović Luka Č
JN - Thermal Science
PY - 2019
VL - 23
IS - 6
SP - 4043
EP - 4053
PT - Article
AB - In this paper we present an analysis of parameters describing the effective  recombination processes in the upper ionospheric D-region in the period of  its additional heating by the X-radiation emitted during a solar X-ray  flare. We present a procedure for calculation of the effective recombination  coefficient and electron loss rate in the period when the X-radiation flux  detected by the GOES satellite in the wavelength domain between 0.1 and 0.8  nm increases. The developed procedure is based on observational data  obtained in the low ionospheric monitoring by the very low/low frequency  (VLF/LF) radio waves and it is related to the considered area and time  period. The obtained expressions are applied to data for the VLF signal  emitted in Germany and recorded in Serbia during the solar X-ray flare  detected by the GOES-14 satellite on May 5, 2010.