The Optical Emission from Gamma-ray Quasars
Astrophysics
2009-11-07 v2
Abstract
We present photometric observations of six radio-loud quasars that were detected by the COMPTEL gamma-ray telescope. The data encompasses seven wavebands in the optical and near-infrared. After correction for Galactic extinction, we find a wide range in optical slopes. Two sources are as blue as optically-selected quasars, and are likely to be dominated by the accretion disc emission, while three others show colours consistent with a red synchrotron component. We discuss the properties of the COMPTEL sample of quasars, as well as the implications our observations have for multi-wavelength modelling of gamma-ray quasars.
Keywords
Cite
@article{arxiv.astro-ph/0304405,
title = {The Optical Emission from Gamma-ray Quasars},
author = {Matthew Whiting and Petra Majewski and Rachel Webster},
journal= {arXiv preprint arXiv:astro-ph/0304405},
year = {2009}
}
Comments
12 pages, 3 figures, accepted for publication in P.A.S.A; minor typos corrected