We present the first report of global ionospheric disturbances due to the most powerful
Gamma Ray Burst GRB221009A occurred on 9 October 2022. Very Low Frequency (VLF) …

Solar flares significantly impact the conditions of the Earth's ionosphere. In particular, the
sudden increase in X-ray flux during a flare penetrates down to the lowest-lying D-region …

We present results from a suite of models designed to simulate solar flare effects on the D
and E region of the ionosphere. This suite includes models of the solar spectrum, the …

The annular solar eclipse of the previous decade that occurred on December 26, 2019, was
mostly visible from most Asian countries, including India. In this manuscript, we present the …

Lower ionospheric response to the im**ing solar radiation is a very well studied and
numerous scientific groups have prolific achievements out of their investigations in this field …

Impacts of solar flare vary at different parts of the lower ionosphere depending on it's
proximity to the direct exposure of incoming solar radiation. The quantitative analysis of this …

Solar eclipse is a unique opportunity to study the lower ionospheric variabilities under a
controlled perturbation when the solar ultraviolet and X-ray are temporally occulted by the …

Any disturbance of the ionosphere may affect operational activities based on HF
communication. The electron density is a critical parameter that controls levels of HF-signal …

Abstract The Global Ionospheric Flare Detection System (GIFDS) is currently under
development at the German Aerospace Center as a ground based detector for continuous …

The variation in the solar Extreme Ultraviolet (EUV) radiation flux by any measure is the most
dominant natural source to produce perturbations or modulations in the ionospheric …