The Variation of the Observed Flux froma Neutron Star by Its Gravitational Field

Abstract

By using Schwarzschild spacetime for describing the space time of the spherical symmetric neutron star, the conservation of the emitted power and the gravitational red shift, a relation connecting the observed flux with the strength of the gravitational field of a neutron star and the emission angle has been found. The relation shows that the observed flux depends on the time component of Schwarzschild tensor of the emission region, the emission angle, the observed flux density and the distance to the neutron star.

Keywords: General relativity, Cosmology, Neutron star, Radiation emission, Gravitational red shift.