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arXiv 1111.2088astro-ph.HE
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使用两个朱雀观测HMXB GX 301-2的宽带光谱学

Broadband spectroscopy using two Suzaku observation of the HMXB GX 301-2

Slawomir Suchy, Felix Fuerst, Katja Pottschmidt, Isabel Caballero, Ingo Kreykenbohm, Joern Wilms, Alex Markowitz, Richard E. Rothschild

摘要:

本文分析了GX 301-2在近星点通过后两个轨道相位的两次朱雀观测。观察到的视线吸收器的列密度的变化,一致的吸积从cloudical风。除了CRSF之外,在两次观察中还检测到多条荧光发射线。在整个脉冲相位中的脉冲轮廓和CRSF的变化具有磁偶极子场的特征。使用一个简单的偶极子模型,我们计算了预期的磁场值为不同的脉冲相位,并能够提取一组几何角度,松散地约束在中子星的偶极子几何形状。从CRSF的宽度和能量的变化,我们找到了一个几何解的偶极子,使倾斜与以前公布的值一致。

英文摘要:

We present the analysis of two Suzaku observations of GX 301-2 at two orbital phases after the periastron passage. Variations in the column density of the line-of-sight absorber are observed, consistent with accretion from a clumpy wind. In addition to a CRSF, multiple fluorescence emission lines were detected in both observations. The variations in the pulse profiles and the CRSF throughout the pulse phase have a signature of a magnetic dipole field. Using a simple dipole model we calculated the expected magnetic field values for different pulse phases and were able to extract a set of geometrical angles, loosely constraining the dipole geometry in the neutron star. From the variation of the CRSF width and energy, we found a geometrical solution for the dipole, making the inclination consistent with previously published values.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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