X-ray observations of OAO 1657-415 with TENMA and GINGA
著者
和文:
Kamata, Y.,
Koyama, K.,
Tawara, Y.,
Makishima, K.,
Ohashi, T.,
河合 誠之,
Hatsukade, I..
英文:
Kamata, Y.,
Koyama, K.,
Tawara, Y.,
Makishima, K.,
Ohashi, T.,
Kawai, N.,
Hatsukade, I..
言語
English
掲載誌/書名
和文:
英文:
Publications of the Astronomical Society of Japan
巻, 号, ページ
Vol. 42
pp. 785-792
出版年月
1990年12月
出版者
和文:
英文:
会議名称
和文:
英文:
開催地
和文:
英文:
アブストラクト
A pulse timing analysis of X-ray pulsar OAO 1657-415 with the Tenma and Ginga satellites is presented. The long-term pulse period history shows a spin-up trend, with an average rate of -0.001/yr. An upper limit to a(x) sin i of 3 lt-s was obtained for the projected semimajor axis for a range of orbital periods of 1 to 6 d. The X-ray spectrum obtained with Ginga was found to be typical of those of other binary X-ray pulsars.
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