Extended X-ray Emission From a Quasar-Driven Superbubble
Astrophysics of Galaxies
2015-06-19 v1 Cosmology and Nongalactic Astrophysics
Abstract
We present observations of extended, 20-kpc scale soft X-ray gas around a luminous obscured quasar hosted by an ultra-luminous infrared galaxy caught in the midst of a major merger. The extended X-ray emission is well fit as a thermal gas with a temperature of kT ~ 280 eV and a luminosity of L_X ~ 10^42 erg/s and is spatially coincident with a known ionized gas outflow. Based on the X-ray luminosity, a factor of ~10 fainter than the [OIII] emission, we conclude that the X-ray emission is either dominated by photoionization, or by shocked emission from cloud surfaces in a hot quasar-driven wind.
Cite
@article{arxiv.1404.4875,
title = {Extended X-ray Emission From a Quasar-Driven Superbubble},
author = {Jenny E. Greene and David Pooley and Nadia L. Zakamska and Julia M. Comerford and Ai-Lei Sun},
journal= {arXiv preprint arXiv:1404.4875},
year = {2015}
}
Comments
Accepted for publication in ApJ, 6 pages, 2 figures