skip to main content

SciTech ConnectSciTech Connect

Title: Light bending in radiation background

We consider the velocity shift of light in presence of radiation emitted by a black body. Within geometric optics formalism we calculate the bending angle of a light ray when there is a gradient in the energy density. We model the bending for two simplified cases. The bending angle is proportional to the inverse square power of the impact parameter (∝1/b{sup 2}) when the dilution of energy density is spherically symmetric. The bending angle is inversely proportional to the impact parameter (∝1/b) when the energy density dilutes cylindrically. Assuming that a neutron star is an isothermal black body, we estimate the order of magnitude for such bending angle and compare it with the bending angle by magnetic field.
Authors:
;  [1]
  1. Department of Physics, Kunsan National University, Kunsan, 573–701 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22369830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2014; Journal Issue: 01; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPARATIVE EVALUATIONS; DILUTION; EMISSION; ENERGY DENSITY; GEOMETRY; IMPACT PARAMETER; MAGNETIC FIELDS; NEUTRON STARS; OPTICS; SPHERICAL CONFIGURATION; SYMMETRY; VELOCITY