Please use this identifier to cite or link to this item: http://hdl.handle.net/2381/26221
 Title: RX J0042.3+4115: A stellar mass black hole binary identified in M 31 Authors: Barnard, R.Osborne, J. P.Kolb, U.Borozdin, K. N. First Published: 1-Jul-2003 Publisher: EDP Sciences for European Southern Observatory (ESO) Citation: Astronomy & Astrophysics, 2003, 405 (2), pp. 505-511 Abstract: Four XMM-Newton X-ray observations of the central region of the Andromeda Galaxy (M 31) have revealed an X-ray source that varies in luminosity over ~ $1{-}3\times 10^{38}$ erg s -1 between observations and also displays significant variability over time-scales of a few hundred seconds. The power density spectra of lightcurves obtained in the 0.3-10 keV energy band from the three EPIC instruments on board XMM-Newton are typical of disc-accreting X-ray binaries at low accretion rates, observed in neutron star binaries only at much lower luminosities (~ 1036 erg s -1). However X-ray binaries with massive black hole primaries have exhibited such power spectra for luminosities >10 38 erg s -1. We discuss alternative possibilities where RX J0042.3+4115 may be a background AGN or foreground object in the field of view, but conclude that it is located within M 31 and hence use the observed power spectra and X-ray luminosities to identify the primary as a black hole candidate. DOI Link: 10.1051/0004-6361:20030638 ISSN: 0004-6361 Links: http://hdl.handle.net/2381/26221http://www.aanda.org/articles/aa/abs/2003/26/aah4296/aah4296.html Version: Publisher Version Status: Peer-reviewed Type: Journal Article Rights: Copyright © 2003 ESO. Reproduced with permission from Astronomy & Astrophysics, © ESO. Description: Erratum available at doi: 10.1051/0004-6361:20035661e Appears in Collections: Published Articles, Dept. of Physics and Astronomy

Files in This Item:
File Description SizeFormat