RXTE determination of the intermediate polar status of XSS J00564+4548, IGR J17195-4100, and XSS J12270-4859
RXTE determination of the intermediate polar status of XSS J00564+4548, IGR J17195-4100, and XSS J12270-4859
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RXTE 测定 XSS J00564 4548、IGR J17195-4100 和 XSS J12270-4859 的中间极性状态
DOI：
10.1051/0004-6361:200809942
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发表时间：
2008
影响因子：
6.5
通讯作者：
E. J. Barlow
中科院分区：
文献类型：
--
作者：
O. Butters;A. Norton;Pasi Hakala;K. Mukai;E. J. Barlow
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.
