Interaction of galaxies and thier surroundings through cosmic rays

Abstract

Galaxies are the largest gravitationally bound structures in the Universe that can form stars. The morphology and star formation rate of the galaxies evolve with time. They interact with each other through merger events. They also interact with the surrounding diffuse gaseous medium in a number of ways. Both these interactions play an important role in the evolution of galaxies. The aim of this thesis is to study the interaction between galaxies and their surrounding medium.