Cookies

We use cookies to ensure that we give you the best experience on our website. By continuing to browse this repository, you give consent for essential cookies to be used. You can read more about our Privacy and Cookie Policy.


Durham Research Online
You are in:

The identification of an optical counterpart to the super-Eddington X-ray source NGC 5204 X-1

Roberts, T. P. and Goad, M. R. and Ward, M. J. and Warwick, R. S. and O'Brien, P. T. and Lira, P. and Hands, A. D. P. (2001) 'The identification of an optical counterpart to the super-Eddington X-ray source NGC 5204 X-1.', Monthly notices of the Royal Astronomical Society., 325 (2). L7-L11.

Abstract

We report the identification of a possible optical counterpart to the super-Eddington X-ray source NGC 5204 X-1. New Chandra data show that the X-ray source is point-like, with a luminosity of 5.2×10^39 erg/s (0.5-8 keV). It displays medium- and long-term X-ray variability in observations spanning a period of 20yr. The accurate Chandra position allows us to identify a blue optical continuum source (mv=19.7) at the position of NGC 5204 X-1, using newly obtained optical data from the INTEGRAL instrument on the William Herschel Telescope. The X-ray and optical source properties are consistent with the scenario in which we are observing the beamed X-ray emission of a high-mass X-ray binary in NGC 5204, composed of an O star with either a black hole or neutron star companion.

Item Type:Article
Additional Information:
Keywords:High-resolution imager, All-sky survey, Rosat observations, Nearby galaxies, Emission, Sample.
Full text:Full text not available from this repository.
Publisher Web site:http://dx.doi.org/10.1046/j.1365-8711.2001.04659.x
Record Created:16 Apr 2008
Last Modified:08 Apr 2009 16:26

Social bookmarking: del.icio.usConnoteaBibSonomyCiteULikeFacebookTwitterExport: EndNote, Zotero | BibTex
Usage statisticsLook up in GoogleScholar | Find in a UK Library