Suzaku Observations of Low-Mass X-ray Binaries at High Mass-Accretion Rates

摘要：

To investigate physical states of Z sources, which are a subclass of low-mass X-ray binaries consisting of a weakly-magnetized neutron star and a companion star, two Z sources (LMC X-2 and GX 349+2) were observed by the Suzaku satellite. Since the interstellar absorption toward LMC X-2 is relatively low, its X-ray signal was detected down to a~0.4keV energy band. From horizontal branch through normal branch to flaring branch, the soft count rate below 1keV was observed to increase continuously, while the hard one above 6keV decreased at the normal branch. This result confirms the existence of the additional soft component with temperature of sub keV, proposed

关键词： stars binaries general--stars individual (LMC X-2, GX 349+2)--stars neutron--X-ray stars

作者: Hiromitsu Takahashi Ayumi Hirasawa Yasushi Fukazawa Kazuo Makishima

作者单位: Department of Physical Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima Department of Physical Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-iroshima, Hiroshima, Department of Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-0033, Japan Cosmic Ra

会议类型: 国际会议

会议名称: 紧凑型物体的天体物理学国际会议(International Conference on Astrophysics of Compact Objects)

会议地点: 安徽黄山

会议语种:英文

页码: 322-324

在线出版日期: 2007-07-01（万方平台首次上网日期，不代表论文的发表时间）