1990•Publications of the Astronomical Society of JapanRequires access
Ginga Observation of the 2S 0114+650 System
Shigeo Yamauchi, Ikuko Asaoka, Mitsunobu Kawada, Katsuji Koyama, Yuzuru Tawara
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Abstract
Abstract We report on the results of observations of the 2S 0114+650 system using the X-ray satellite Ginga. The X-ray flux was highly variable with flare-like activity. The spectrum shows the typical shape of the usual X-ray pulsars having a power-law index of about 1 with an exponential cutoff at an energy of about 7 keV. The iron emission line at about 6.4 keV, which is also common among X-ray pulsars, was discovered for the first time. We found possible pulsation with a period of 850 s. Other than this, no significant periodic pulsation was detected in the range from 125 ms to about 1000 s.