Abstract Details
| Name: Naga Vijaya Deepthi A Affiliation: IIT INDORE Conference ID: ASI2018_1759 Title : IONOSPHERIC TEC AS A PROBE TO STUDY THE SOLAR FLARES Authors and Co-Authors : Sumanjit Chakraborty, Dr.Abhirup Datta, Centre of Astronomy, IIT Indore Abstract Type : Poster Abstract Category : Sun and the Solar System Abstract : The physiochemical model of the ionosphere is very complicated with a multitude of photochemical reactions going on; ions forming and recombining with the availability or scarcity of energetic photons and particles. The existing complicated model of the ionosphere is further complicated during a Sudden Ionospheric Disturbance (SID) which can be caused by a solar flare or a gamma burst. A flare is defined as a sudden, rapid, and intense variation in brightness. A solar flare occurs when magnetic energy that has built up in the solar atmosphere is suddenly released. Flares are classified according to their brightness as C, M and X. The X-ray fluxes during solar flares are known to cause increased ionization in the Earth's ionosphere. During a solar flare, the sun releases energy in the form of electro-magnetic waves, energetic particle and mass motions. Although all of this energy obviously does not reach the earth, a fraction of it reaches the earth and disrupts the normal balance of ion formation and recombination in the ionosphere. This disruption disturbs the propagation models of radio waves transmitted through the ionosphere. This disturbance is responsible for distorted waves which can be a problem for the Global Navigation Satellite System (GNSS) receivers. The development of Global Positioning System (GPS) ground and satellite data for scientific use has opened up new means for high time resolution research on such disturbances. As a part of our research we consider and take in to account the effects of solar flare on ionospheric Total Electron Content (TEC) during pre-flare and post-flare phase of the solar flare including the day of active acceleration of solar flare at different latitude stations of the Indian subcontinent region and consequently examine the ionospheric response during solar activity which could provide a better understanding of the space weather and the Sun. |