Resolving the X-ray emission from the Lyman continuum emitting galaxy Tol 1247-232
High Energy Astrophysical Phenomena
2017-08-30 v1 Astrophysics of Galaxies
Abstract
Chandra observations of the nearby, Lyman-continuum (LyC) emitting galaxy Tol 1247-232 resolve the X-ray emission and show that it is dominated by a point-like source with a hard spectrum () and a high luminosity (). Comparison with an earlier XMM-Newton observation shows flux variation of a factor of 2. Hence the X-ray emission likely arises from an accreting X-ray source: a low-luminosity AGN or one or a few X-ray binaries. The Chandra X-ray source is similar to the point-like, hard spectrum (), high luminosity () source seen in Haro 11, which is the only other confirmed LyC-emitting galaxy that has been resolved in X-rays. We discuss the possibility that accreting X-ray sources contribute to LyC escape.
Keywords
Cite
@article{arxiv.1708.05074,
title = {Resolving the X-ray emission from the Lyman continuum emitting galaxy Tol 1247-232},
author = {P. Kaaret and M. Brorby and L. Casella and A. H. Prestwich},
journal= {arXiv preprint arXiv:1708.05074},
year = {2017}
}
Comments
6 pages, accepted for MNRAS