093085

We propose contemporaneous NuSTAR and XMM-Newton observations of the recentlyclassified IMXB 4U 1210-64 for 40 ks. Taking advantage of the excellent timingand spectral resolution of NuSTAR we will perform broadband continuumspectroscopy and look for signatures of a NS or BH such as pulsations QPOs andCRSFs. With XMM-Newton we will probe the geometry and ionization structure ofthe accretion flow onto the compact object using the high spectral resolution ofRGS measure the profile of the Fe Kalpha Fe XXV and Fe XXVI emission lines aswell as search for emission lines of lower Z ions. Our observation of 4U 1210-64holds broader astrophysical r^ance in characterizing the circumstellarenvironment in IMXBs and will be the first observation of 4U1210 with grating resolution. [truncated! Please see actual data for full text]

我们提议对近期分类的中等质量X射线双星（IMXB）4U 1210-64开展NuSTAR与XMM-Newton的同期观测，时长为40千秒。利用NuSTAR卓越的时间分辨率与光谱分辨率，我们将开展宽带连续谱光谱学研究，并寻找中子星（NS）或黑洞（BH）的特征信号，例如脉动、准周期振荡（QPOs）及回旋共振散射特征（CRSFs）。借助XMM-Newton反射光栅光谱仪（RGS）的高光谱分辨率，我们将探究吸积流朝向致密天体的几何结构与电离结构，测量Fe Kα、Fe XXV及Fe XXVI发射线的轮廓，并搜寻低原子序数离子的发射线。我们对4U 1210-64的观测在刻画中等质量X射线双星（IMXBs）的星周环境方面具有更广泛的天体物理意义，且将是首次利用光栅分辨率对4U 1210开展的观测。[原文截断！完整文本请参见实际数据]