An X-ray and optical study of the new SMC X-ray binary pulsar system SXP7.92 and its probable optical counterpart, AzV285 |
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| Authors: | M J Coe M Schurch V A McBride R H D Corbet L J Townsend A Udalski J L Galache |
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| Institution: | School of Physics and Astronomy, University of Southampton, SO17 1BJ;University of Maryland, Baltimore County, Mail Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA;Warsaw University Observatory, Aleje Ujazdowskie 4, 00-478 Warsaw, Poland;Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, USA |
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| Abstract: | Optical and X-ray observations are presented here of a newly reported X-ray transient system in the Small Magellanic Cloud (SMC) – SXP7.92. A detailed analysis of the X-ray data reveal a coherent period of 7.9 s. A search through earlier X-ray observations of the SMC reveal a previously unknown earlier detection of this system. Follow-up X-ray observations identified a new transient source within the error circle of the previous observations. An optical counterpart, AzV285, is proposed which reveals clear evidence for a 36.8 d binary period. |
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| Keywords: | stars: neutron X-rays: binaries |
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