Discovery of an X-Ray Pulsar in the SMC: AX J0058-7203

Abstract

We report on the discovery and analysis of an X-ray pulsar, AX J0058-7203, in the Small Magellanic Cloud. This pulsar exhibits coherent pulsations at P= 280.3 s with a double-peak structure. The X-ray spectrum is well fitted with a simple power-law model of photon index ~ 0.7. No significant change of the pulsation period over the observation was found. A comparison with ROSAT observations in the same field reveals that AX J0058-7203 is highly variable, and is most likely a Be star binary pulsar.

5 pages, 4 figures, to be published in PASJ

Cited by in corpus (9)

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• A Long Look at the Be/X-Ray Binaries of the Small Magellanic Cloud
• Review of Discrete X-Ray Sources in the Small Magellanic Cloud: Summary of the ASCA Results and Implication on the Recent Star Forming Activity
• A Study of the Populations of X-ray Sources in the Small Magellanic Cloud with ASCA
• A Puzzling Paucity of Double Peaked X-ray Pulsars
• Constraining compactness and magnetic field geometry of X-ray pulsars from the statistics of their pulse profiles
• An X-ray investigation of the NGC 346 field in the SMC (3): XMM-Newton data
• Radiative Column and Light Curve of X-Ray Binary Pulsars
• A 168-s X-Ray Pulsar in the SMC Observed with ASCA