The discovery of 12min X-ray pulsations from 1WGA J1958.2+3232

Details The discovery of 12min X-ray pulsations from 1WGA J1958.2+3232 The discovery of 12min X-ray pulsations from 1WGA J1958.2+3232

1998-02-10

arxiv.org/abs/astro-ph/9802119v1

Astronomy and Astrophysics

Astrophysics

5 pages (figures included). Accepted for publication on MNRAS

Scientific paper

10.1046/j.1365-8711.1998.01653.x

During a systematic search for periodic signals in a sample of ROSAT PSPC (0.1-2.4 keV) light curves, we discovered 12min large amplitude X-ray pulsations in 1WGA J1958.2+3232, an X-ray source which lies close to the galactic plane. The energy spectrum is well fit by a power law with a photon index of 0.8, corresponding to an X-ray flux of about 10E-12 ergs cmE-2 sE-1. The source is probably a long period, low luminosity X-ray pulsar, similar to X Per, or an intermediate polar.

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