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首页> 外文期刊>PASJ: Publications of the Astronomical Society of Japan >A broad spectral feature detected during the cooling phase of a type I X-ray burst from GRS?1747?312 with Suzaku
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A broad spectral feature detected during the cooling phase of a type I X-ray burst from GRS?1747?312 with Suzaku

机译：使用朱雀将GRS？1747？312的I型X射线爆发的冷却阶段检测到的广谱特征

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We analyzed the Suzaku archive data of a type I X-ray burst from GRS?1747?312, a low-mass X-ray binary located in the globular cluster Terzan 6. During the Galactic bulge mapping observations with Suzaku, which covered Terzan 6, an X-ray burst of long duration and with moderate photospheric-radius expansion was serendipitously detected and was considered to be most probably originating from GRS?1747?312. The time-divided burst spectra were reproduced well with an absorbed blackbody over the majority of the time, but significant deviation was detected late in the cooling phase. The deviation was due to a rolled-off feature, which gradually developed in the cooling phase of the burst, in the energy spectra above ～7?keV. We tested various models to reproduce the spectral feature and found three types of models (reflection by cold matter, partial-covering absorption, and Doppler-smeared absorption edges due to the rapid spin of a neutron star) gave a statistically acceptable fit. We discussed the feasibility of these models, including a non-Planckian nature of the burst spectra.
机译：我们分析了来自GRS？1747？312（位于球状星团Terzan 6中的低质量X射线双星）发出的I型X射线爆炸的朱雀档案数据。在使用朱雀（覆盖Terzan 6）的银河凸起映射观测期间偶然发现了一个持续时间长，光球半径适中的X射线爆发，并被认为很可能起源于GRS？1747？312。在大部分时间中，被吸收的黑体可以很好地再现按时间划分的猝发光谱，但是在冷却阶段后期发现了明显的偏差。偏离是由于在〜7？keV以上的能谱中在滚降的冷却阶段逐渐形成的滚降特性所致。我们测试了各种模型以重现光谱特征，并发现了三种类型的模型（由于中子星的快速自旋引起的冷物质反射，部分覆盖吸收和多普勒涂抹吸收边缘）在统计上可以接受。我们讨论了这些模型的可行性，包括突发光谱的非普朗克性质。

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