Imaging the Earth’s magnetosphere in Soft X-Rays

X-ray emission due to charge exchange process between heavy solar wind ions and neutrals has been predicted to exist both in the heliosphere and in the geocorona. It is suggested and shown that the temporal variations in the solar wind drive intensity variations in X-ray emissions by heliosphere and geocorona. The physical processes occurring in the magnetosphere for e.g., steady or transient magnetic reconnection, local or global magnetic reconnection, ion pick-up, or the Kelvin- Helmholtz instability generates plasma density. The efforts are being made to image the plasma density structures using this soft (low energy, 0.1–2.0 keV) X-rays. The talk will give an overview of the magnetosphere of the Earth and X-ray imaging past, present, and future. Also, will discuss the possibility of using Soft X-ray Telescope (SXT) on the ASTROSAT to study emissions from the magnetosphere.