2004/02/29 by F. Haberl, W. Pietsch, N. Schartel +2 · 1 citation
Physics and Astronomy · #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Pulsars and Gravitational Waves Research #astro-ph
paper · pdf · doi:10.1051/0004-6361:20040156
published as Astron.Astrophys. 420 (2004) L19-L22 · A&A Letters, in press
arxiv created 2004/05/03 · openalex publication_date 2004/06/01 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.