Iron emission line from the spiral galaxy M101
High Energy Astrophysical Phenomena
2015-11-18 v1
Abstract
Archival Suzaku data of the face-on spiral galaxy M101 were analyzed. An intense emission line at 6.72^{+0.10}_{-0.12} keV was detected in the central region. This line is identified with a K-line from He-like iron, which indicates the existence of a thin thermal plasma with a temperature of several keV. The iron line luminosity within the central 5 arcmin radius region is estimated to be (2-12)x10^{37} erg s^{-1}. The origin of the iron emission line is discussed.
Keywords
Cite
@article{arxiv.1510.01483,
title = {Iron emission line from the spiral galaxy M101},
author = {Shigeo Yamauchi},
journal= {arXiv preprint arXiv:1510.01483},
year = {2015}
}
Comments
Accepted for publication in PASJ