Discovery of a 9-s X-Ray Pulsar, AX J0049-732, in the Small Magellanic Cloud
Masaru Ueno, Jun Yokogawa, Kensuke Imanishi, Katsuji Koyama
Abstract
We report the ASCA discovery of a new X-ray pulsar, AX J0049-732, in the Small Magellanic Cloud (SMC). The pulse shape is sinusoidal with a barycentric period of 9.1320 +/- 0.0004 s. The X-ray spectrum was fitted by an absorbed power-law model with a photon index of ~0.6 and a column density of ~1.3e22 cm-2. An unabsorbed flux in the 0.7-10.0 keV was estimated to be ~8e-13 erg cm-2 s-1 corresponding to the X-ray luminosity of ~4e35 erg s-1 at the SMC distance of 62 kpc.
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