The discovery of 12 min X – ray pulsations from 1 WGA J 1958 . 2 + 3232
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چکیده
During a systematic search for periodic signals in a sample of ROSAT PSPC (0.1– 2.4 keV) light curves, we discovered ∼ 12 min 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 level of ∼ 10−12 erg cm−2 s−1. The source is probably a long period, low luminosity X–ray pulsar, similar to X Per, or an intermediate polar .
منابع مشابه
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تاریخ انتشار 1997