TEC DYNAMICS DURING X-CLASS SOLAR FLARES

Abstract

The paper presents a comprehensive analysis of the TEC dynamics during X-class solar flares that occurred in September 2017. The increase in the intensity of X-ray and ultraviolet radiation, observed during chromospheric flares on the Sun, causes an immediate increase in the electron density in the entire ionosphere. In this study, we developed a method for estimating the change in the TEC of the ionosphere caused by a burst of solar activity. Based on the results obtained, the wavelength range was determined, which to a greater extent determines the change in the value of the total electron content of the ionosphere during solar flares.