Wetro, Legesse (PhD)Teka, Demisew2018-06-202023-11-092018-06-202023-11-092014-09http://10.90.10.223:4000/handle/123456789/2344We calculate the scattering cross section for inverse compton scattering in curved spacetime in the presence of strong magnetic eld. An approximate solution of Dirac equation in a spatially at RW spacetime has been established. And its solution in Friedman universe is also discussed. The scattering cross section we found contains the expanision parameter of the expanding universe and this makes main di erence from the special relativistic results. We investigate the role of the expanission parameter to the scattering cross section of the inverse compton scatteringenInverse Compton ScatteringThesis