BROADBAND SUZAKU OBSERVATIONS OF IGR J16207-5129

作者：Bodaghee A^*; Tomsick J A; Rodriguez J; Chaty S; Pottschmidt K; Walter R

来源：Astrophysical Journal, 2010, 719(1): 451-458.

DOI：10.1088/0004-637X/719/1/451

• accretion, accretion disks
• gamma rays: general
• stars: neutron
• supergiants
• X-rays: binaries X-rays: individual (IGR J16207-5129)

An analysis of IGR J16207-5129 is presented based on observations taken with Suzaku. The data set represents similar to 80 ks of effective exposure time in a broad energy range between 0.5 and 60 keV, including unprecedented spectral sensitivity above 15 keV. The average source spectrum is well described by an absorbed power law in which we measured a large intrinsic absorption of N(H) = ( 16.2(-1.1)(+0.9)) x 10(22) cm(-2). This confirms that IGR J16207-5129 belongs to the class of absorbed high-mass X-ray binaries. We were able to constrain the cutoff energy at 19(-4)(+8) keV, which argues in favor of a neutron star as the primary. Our observation includes an epoch in which the source count rate is compatible with no flux suggesting a possible eclipse. We discuss the nature of this source in light of these and of other recent results.

• 出版日期2010-8-10
• 单位中国地震局