Discovery of 16.6 and 25.5 s Pulsations from the Small Magellanic Cloud

Details Discovery of 16.6 and 25.5 s Pulsations from the Small Magellanic Cloud Discovery of 16.6 and 25.5 s Pulsations from the Small Magellanic Cloud

2001-12-14

arxiv.org/abs/astro-ph/0112360v1

Astronomy and Astrophysics

Astrophysics

9 pages with 3 figures. Submitted to ApJ Letters

Scientific paper

10.1086/340001

We report the serendipitous detection of two previously unreported pulsars from the direction of the Small Magellanic Cloud, with periods of 16.6 and 25.5 seconds. The detections are based on archival PCA data from the Rossi X-ray Timing Explorer (RXTE). The observation leading to these detections occurred in September 2000 extending over 2.1 days with an exposure of 121 ks. A possible identification of the 16.6 s pulsar with an X-ray source RX J0051.8-7310 seen by both ROSAT and ASCA imaging X-ray satellites is presented.

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