Barnard, R.; Kolb, U. and Osborne, J.P.
(2003).
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| DOI (Digital Object Identifier) Link: | http://dx.doi.org/doi:10.1051/0004-6361:20031513 |
|---|---|
| Google Scholar: | Look up in Google Scholar |
Abstract
Four XMM-Newton observations of the core of M 31, spaced at 6 month intervals, show that the brightest point X-ray source, RX J0042.6+4115, has a 0.4-10 keV luminosity of ~ 5x1038 erg s -1, and exhibits significant variability in intensity and X-ray spectrum over a time scale of ~100 s including hard flares; such behaviour is only observed in Z-sources and transient black hole binaries in our Galaxy. The lightcurves, X-ray spectra and hardness-intensity data from the four XMM-Newton observations all strongly suggest that it is a Z-source, bringing the total number of known Z-sources to nine.
| Item Type: | Journal Article |
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| ISSN: | 1432-0746 |
| Funders: | Particle Physics and Astronomy Research Council |
| Extra Information: | Article published by EDP Sciences and available at http://www.edpsciences.org/aa or http://dx.doi.org/10.1051/0004-6361:20031513 |
| Keywords: | X-rays; galaxies; M 31; binaries |
| Academic Unit/Department: | ?? scie-phya ?? Science > Physical Sciences |
| Interdisciplinary Research Centre: | Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR) |
| Item ID: | 4881 |
| Depositing User: | Users 6041 not found. |
| Date Deposited: | 17 Jul 2006 |
| Last Modified: | 18 Feb 2012 10:33 |
| URI: | http://oro.open.ac.uk/id/eprint/4881 |
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