X-ray and optical study of the new SMC X-ray binary pulsar system SXP7.92 and its probable optical counterpart, AzV285

A. Udalski (Warsaw University Observatory); J.L. Galache (CfA Harvard); L.J. Townsend (Southampton); M. J. Coe (Southampton); M. Schurch (Southampton); R.H.D. Corbet (UMBC/NASA GSFC); V.A. McBride (Southampton)

arxiv: 0901.2268 · v1 · submitted 2009-01-15 · 🌌 astro-ph.HE

X-ray and optical study of the new SMC X-ray binary pulsar system SXP7.92 and its probable optical counterpart, AzV285

M. J. Coe (Southampton) , M. Schurch (Southampton) , V.A. McBride (Southampton) , R.H.D. Corbet (UMBC/NASA GSFC) , L.J. Townsend (Southampton) , A. Udalski (Warsaw University Observatory) , J.L. Galache (CfA Harvard) This is my paper

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keywords x-rayobservationsopticalsystemazv285binarycounterpartearlier

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Optical and X-ray observations are presented here of a newly reported X-ray transient system in the Small Magellanic Cloud - SXP7.92. A detailed analysis of the X-ray data reveal a coherent period of 7.9s. 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 36.8d binary period.

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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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