Discovery and study of the accreting pulsar 2RXP J130159.6-635806
Discovery and study of the accreting pulsar 2RXP J130159.6-635806
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DOI：
10.1111/j.1365-2966.2005.09548.x
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发表时间：
2005-08
期刊：
影响因子：
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通讯作者：
M. Chernyakova;A. Lutovinov;J. Rodriguez;M. Revnivtsev
中科院分区：
文献类型：
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作者：
M. Chernyakova;A. Lutovinov;J. Rodriguez;M. Revnivtsev
我们报告了在不同时期用ASCA、BeppoSAX、XMM-牛顿和INTEGRAL对研究不足的源2 RXP J130159.6-635806进行的分析。源显示相干X射线脉动在一个周期${\sim}700$ s与$\dot{\nu}\sim 2\times 10^{-13}$ Hz s$^{-1}$。基于几乎同时的XMM-牛顿和INTEGRAL数据的2 RXP J130159.6-635806的宽带（1-60 keV）光谱分析表明，源光谱是光子指数$\Gamma\sim 0.5-1.0$和截止能量${\sim}25$ keV的吸收功率定律。我们还报告可能的红外对应物2 RXP J130159.6-635806的识别。星际红化不允许我们强烈地限制对应物的光谱类型。然而，后者与Be星星是一致的，这种恒星经常在吸积动力的X射线双星中被观察到。
We report on analysis of the poorly studied source 2RXP J130159.6-635806 at different epochs with ASCA, BeppoSAX, XMM-Newton and INTEGRAL. The source shows coherent X-ray pulsations at a period ${\sim}700$ s with $\dot{\nu}\sim 2\times 10^{-13}$ Hz s$^{-1}$. A broad band (1–60 keV) spectral analysis of 2RXP J130159.6-635806 based on almost simultaneous XMM-Newton and INTEGRAL data demonstrates that the source spectrum is an absorbed power law with a photon index $\Gamma\sim 0.5-1.0$ and a cut-off energy of ${\sim}25$ keV. We also report on the identification of the likely infrared counterpart to 2RXP J130159.6-635806. The interstellar reddening does not allow us to strongly constrain the spectral type of the counterpart. The latter is, however, consistent with a Be star, the kind of which is often observed in accretion powered X-ray pulsars.