RXTE测定XSS J00564 +4548、IGR J17195-4100和XSS J12270-4859的中间极性状态
RXTE determination of the intermediate polar status of XSS J00564+4548, IGR J17195-4100, and XSS J12270-4859
摘要：
目的：我们确定中间极性候选者XSS J 00564 +4548，IGR J17195-4100和XSS J12270-4859的性质。方法：有针对性的RXTE观察在这些候选系统中搜索中间极性特征。结果如下：XSS J 00564 +4548的周期为465.68 ± 0.07 s，我们认为这是自旋周期，调制深度与能量有关，光谱与22 keV光电吸收轫致辐射的铁谱线轮廓相吻合。IGR J17195-4100显示了几个候选周期和一个由幂律拟合的谱。XSS J12270-4859显示出859.57 ± 0.64 s的候选自旋周期和符合幂律的光谱，没有铁线的证据。结论：XSS J 00564 +4548为中间极性。IGR J17195-4100和XSS J12270-4859都显示出中间极的某些性质，但不能确定是这类的成员。
英文摘要：
Aims: We determine the nature of the intermediate polar candidates XSS J00564+4548, IGR J17195-4100, and XSS J12270-4859. Methods: Pointed RXTE observations searched for intermediate polar characteristics in these candidate systems. Results: XSS J00564+4548 exhibits a period of 465.68+-0.07 s, which we interpret as the spin period, an energy dependent modulation depth, and a spectrum that is fit by a 22 keV photoelectrically absorbed bremsstrahlung with an iron line profile. IGR J17195-4100 shows several candidate periodicities and a spectrum that is fit by a power law with an iron line. XSS J12270-4859 exhibits a candidate spin period of 859.57+-0.64 s and a spectrum that is fit by a power law with no evidence of an iron line. Conclusions: XSS J00564+4548 is confirmed to be an intermediate polar. IGR J17195-4100 and XSS J12270-4859 both show some properties of intermediate polars, but cannot be confirmed as definite members of the class here.
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