Conversion of relic gravitational waves into photons in cosmological magnetic fields

  • Dolgov A
  • Ejlli D
  • 13


    Mendeley users who have this article in their library.
  • 8


    Citations of this article.


Conversion of gravitational waves into electromagnetic radiation is discussed. The probability of transformations of gravitons into photons in presence of cosmological background magnetic field is calculated at the recombination epoch and during subsequent cosmological stages. The produced electromagnetic radiation is concentrated in the X-ray part of the spectrum. It is shown that if the early Universe was dominated by primordial black holes (PBHs) prior to Big Bang Nucleosynthesis (BBN), the relic gravitons emitted by PBHs would transform to an almost isotropic background of electromagnetic radiation due to conversion of gravitons into photons in cosmological magnetic fields. Such extragalactic radiation could be noticeable or even dominant component of Cosmic X-ray Background.

Author-supplied keywords

  • X-rays
  • primordial black holes
  • primordial gravitational waves (theory)
  • primordial magnetic fields

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document


  • Alexander D. Dolgov

  • Damian Ejlli

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free