Discovery of a 9-s X-ray pulsar, AX JOO49-732, in the Small Magellanic Cloud

Authors
Ueno, M Yokogawa, J Imanishi, K Koyama, K
Citation
M. Ueno et al., Discovery of a 9-s X-ray pulsar, AX JOO49-732, in the Small Magellanic Cloud, PUB AST S J, 52(6), 2000, pp. L63-L66
Citations number
21
Categorie Soggetti
Space Sciences
Journal title
PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN
ISSN journal
00046264 → ACNP
Volume
52
Issue
6
Year of publication
2000
Pages
L63 - L66
Database
ISI
SICI code
0004-6264(2000)52:6<L63:DOA9XP>2.0.ZU;2-A
Abstract
We report on an ASCA discovery of a new X-ray pulsar, AX J0049-732, in the Small Magellanic Cloud (SMC). The pulse shape is sinusoidal with a barycent ric period of 9.1320 +/- 0.0004 s. The X-ray spectrum was fitted by an abso rbed power-law model with a photon index of 0.6(-0.7)(+1.0) and a column de nsity of 1.3(-1.3)(+2.9) x 10(22) cm(-2). An unabsorbed flux at 0.7-10.0 ke V was estimated to be 8 x 10(-13) erg cm(-2) s(-1) corresponding to an X-ra y luminosity of 4 x 10(35) erg s(-1) at the SMC distance of 62 kpc.