Optical inverse-Compton emission from clusters of galaxies
High Energy Astrophysical Phenomena
2015-09-09 v2
Abstract
Shocks around clusters of galaxies accelerate electrons which upscatter the Cosmic Microwave Background photons to higher-energies. We use an analytical model to calculate this inverse Compton (IC) emission, taking into account the effects of additional energy losses via synchrotron and Coulomb scattering. We find that the surface brightness of the optical IC emission increases with redshift and halo mass. The IC emission surface brightness, 32--34~mag~arcsec, for massive clusters is potentially detectable by the newly developed Dragonfly Telephoto Array.
Cite
@article{arxiv.1506.07414,
title = {Optical inverse-Compton emission from clusters of galaxies},
author = {Ryo Yamazaki and Abraham Loeb},
journal= {arXiv preprint arXiv:1506.07414},
year = {2015}
}
Comments
11 pages, 7 figures, 1 table, accepted for publication in MNRAS