Home >

news ヘルプ

論文・著書情報


タイトル
和文: 
英文:Observation of Centaurus X-3 by Hakucho 
著者
和文: Murakami, T., Inoue, H., 河合 誠之, Koyama, K., Makishima, K., Matsuoka, M., Oda, M., Ogawara, Y., Ohashi, T., Shibazaki, N., Tanaka, Y., Hayakawa, S., Kunieda, H., Makino, F., Masai, K., Nagase, F., Tawara, Y., Miyamoto, S., Tsunemi, H., Yamashita, K., Kondo, I..  
英文: Murakami, T., Inoue, H., Kawai, N., Koyama, K., Makishima, K., Matsuoka, M., Oda, M., Ogawara, Y., Ohashi, T., Shibazaki, N., Tanaka, Y., Hayakawa, S., Kunieda, H., Makino, F., Masai, K., Nagase, F., Tawara, Y., Miyamoto, S., Tsunemi, H., Yamashita, K., Kondo, I..  
言語 English 
掲載誌/書名
和文: 
英文:Astrophysical Journal 
巻, 号, ページ Vol. 264        pp. 563-567
出版年月 1983年1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 The binary X-ray pulsar Cen X-3 was observed by the X-ray astronomy satellite Hakucho between 1981 March 21 - 26. A pulsation period of 4.8317231 ± 0.0000004 s and an orbital epoch of JD 2,444,686.44760 ± 0d.00005 were obtained from the pulse-timing analysis. The long-term spin-up rate in the pulsation period of Cen X-3 between 1977 and 1981 shows a decrease by a factor of 5 from that in 1975. The orbital period of 2.0871061 ± 0d.0000002 averaged between 1979 and 1981 exhibits a small but significant decrease. The present result confirms the trend of steady decrease of the orbital period. Possible mechanisms for the decrease of the pulsar spin-up rate and the decrease in the orbital period of Cen X-3 are discussed.

©2007 Institute of Science Tokyo All rights reserved.