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Title
Japanese: 
English:A possible 67-s X-ray pulsation period from 4U 1700-37 
Author
Japanese: Murakami, T., 河合 誠之, Makishima, K., Mitani, K., Hayakawa, S., Nagase, F., Tawara, Y., Kunieda, H..  
English: Murakami, T., Kawai, N., Makishima, K., Mitani, K., Hayakawa, S., Nagase, F., Tawara, Y., Kunieda, H..  
Language English 
Journal/Book name
Japanese: 
English:Publications of the Astronomical Society of Japan 
Volume, Number, Page Vol. 36        pp. 691-697
Published date 1984 
Publisher
Japanese: 
English: 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
Abstract Possible X-ray pulsations with a period of 67.4s were discovered by Tenma from the massive binary X-ray source 4U 1700-37. Due to the similarity of characteristics with other massive X-ray pulsars, pulsations of 4U 1700-37 have long been suspected. The pulsations were observed only during the brightest flare of 4U 1700-37, while no indication of pulsation was found during the quiescent state. This suggests a possible change in the X-ray emission area on the neutron star depending on accretion rate.

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