Volume 420, Number 3, June IV 2004
|Page(s)||L19 - L22|
|Published online||04 June 2004|
Letter to the Editor
Two long-period X-ray pulsars detected in the SMC field around *
Max-Planck-Institut für extraterrestrische Physik, Giessenbachstraße, 85748 Garching, Germany
2 XMM-Newton Science Operations Centre, ESA, Villafranca del Castillo, PO Box 50727, 28080 Madrid, Spain
3 Laboratory for High Energy Astrophysics, Code 662, NASA Goddard Space Flight Center, Greenbelt, MD 20771, USA
4 Universities Space Research Association
Corresponding author: F. Haberl, firstname.lastname@example.org
Accepted: 30 April 2004
An XMM-Newton target of opportunity observation of the field around the transient 18.37 s pulsar in the Small Magellanic Cloud (SMC) revealed two bright, long-period X-ray pulsars in the EPIC data. A new pulsar, , with a pulse period of s was discovered and s pulsations were detected from (=CXOU J005455.6–724510), confirming the period found in Chandra data. We derive X-ray positions of , and , (J2000.0) with an uncertainty of 02 utilizing optical identification with OGLE stars. For both objects, the optical brightness and colours and the X-ray spectra are consistent with Be/X-ray binary systems in the SMC.
Key words: galaxies: individual: Small Magellanic Cloud / stars: neutron / X-rays: binaries / X-rays: galaxies
© ESO, 2004
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