BROADBAND SPECTROSCOPY USING TWO SUZAKU OBSERVATIONS OF THE HMXB GX 301−2
BROADBAND SPECTROSCOPY USING TWO SUZAKU OBSERVATIONS OF THE HMXB GX 301−2
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DOI：
10.1088/0004-637x/745/2/124
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发表时间：
2011-11
期刊：
影响因子：
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通讯作者：
S. Suchy;F. Fuerst;K. Pottschmidt;I. Caballero;I. Kreykenbohm;J. Wilms;A. Markowitz;R. Rothschild
中科院分区：
文献类型：
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作者：
S. Suchy;F. Fuerst;K. Pottschmidt;I. Caballero;I. Kreykenbohm;J. Wilms;A. Markowitz;R. Rothschild
我们分析了在近星点通过后的两个轨道相位上对GX 301−2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。除了回旋共振散射功能（CRSF），多个荧光发射线，在这两个观察中检测到。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，我们计算了不同脉冲相位的预期磁场值，并能够提取一组几何角度，松散地约束中子星星中的偶极子几何形状。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。
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 cyclotron resonance scattering feature (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.