论文标题
使用nustar数据的增生流动围绕超X射线源M82 X-1的研究
Study of accretion flows around an ultraluminous X-ray source M82 X-1 using NuSTAR data
论文作者
论文摘要
我们使用{\ it nustar}观测值研究了超X射线源M82 \，X-1的光谱特性和积聚流动行为。我们使用物理两个组件对流流（TCAF）模型来拟合数据并得出源的积聚流属性。从模型拟合的参数中，我们发现M82 \，X-1在其中心藏有一个中间的黑洞，其中质量从$ 156.04^{+13.51} _ { - 15.30} $到$ 380.96^{28.38} _ {28.38} _ {288} _ { - 29.76 _ { - 29.76} $ $ $ $ __黑洞的误差加权平均质量为$ 273 \ pm43 $ m $ _ \ odot $，它几乎以超级 - 埃德丁顿的利率积聚。康普顿云是紧凑的，大小为$ \ sim13 r_g $，而冲击压缩比具有\ textColor {black} {几乎中间值，除了epoch四}。这些表明磁盘内部区域可能有明显的质量流出。从模型拟合参数估算的准周期振荡（QPO）频率可以重现观察到的QPO。模型参数的鲁棒性可以通过在其中绘制置信度轮廓来验证。
We study the spectral properties and accretion flow behavior of an ultraluminous X-ray source M82\,X-1 using {\it NuSTAR} observations. We use the physical two component advective flow (TCAF) model to fit the data and to derive the accretion flow properties of the source. From the model fitted parameters, we found that M82\,X-1 is harboring an intermediate mass black hole at its centre, where the mass varies from $156.04^{+13.51}_{-15.30}$ to $380.96^{28.38}_{-29.76}$ M$_\odot$. The error weighted average mass of the black hole is $273\pm43$ M$_\odot$, which accreted in nearly super-Eddington rate. The Compton cloud was compact with a size of $\sim13 r_g$ and the shock compression ratio had \textcolor{black}{nearly intermediate values except for the epoch four}. These indicate a possible significant mass outflow from the inner region of the disk. The quasi periodic oscillation (QPO) frequencies estimated from the model fitted parameters can reproduce the observed QPOs. The robustness of the model parameters is verified by drawing the confidence contours among them.
