论文标题
关于黑洞候选1E 1740.7-2942的电晕的行为，基于长期积分数据库
On the behavior of the black hole candidate 1E 1740.7-2942's corona based on long-term INTEGRAL database
论文作者
论文摘要
解释在X射线二进制中观察到的硬X射线光谱的最直接方法之一是假设发生了来自增生盘的软光子的构成。该过程发生的区域（称为电晕）的特征只有两个参数：其热能$ kt $及其光学深度$τ$。因此，硬X射线光谱分析是诊断这些参数行为的命令式工具。但是，缺乏获得/分析长期数据库的一致性可能一直在阻碍这种表征。为了更好地理解黑洞候选1E 1740.7-2942中的电晕行为，我们对ISGRI望远镜的大型硬X射线数据集进行了同质分析。对光谱进行建模的结果表明，对于我们的大多数样品，不饱和的热构造是负责在1E 1740.7-2942中观察到的硬X射线光谱的主要机制。此外，如此广泛的数据库使我们能够产生可能是1E 1740.7-2942的最长硬X射线光曲线，并且由于最近有关系统动态数量的发现，其单位可以以爱丁顿的亮度百分比表示。
One of the most straightforward ways to explain the hard X-ray spectra observed in X-ray binaries is to assume that comptonization of soft photons from the accretion disk is occurring. The region where this process takes place, called the corona, is characterized by only two parameters: its thermal energy $kT$ and its optical depth $τ$. Hard X-ray spectra analysis is, thus, an imperative tool in diagnosing the behavior of these parameters. The lack of consistency in obtaining/analysing long-term databases, however, may have been hindering this kind of characterization from being attained. With the aim of better understanding the corona behavior in the black hole candidate 1E 1740.7-2942, we performed a homogeneous analysis for a large hard X-ray data set from the ISGRI telescope on-board the INTEGRAL satellite. Results from modelling the spectra show that, for most of our sample, unsaturated thermal comptonization is the main mechanism responsible for the hard X-ray spectra observed in 1E 1740.7-2942. Moreover, such extensive database allowed us to produce what is probably the longest hard X-ray light curve of 1E 1740.7-2942 and whose units -- due to recent findings regarding dynamical quantities of the system -- could be expressed in % of Eddington's luminosity.
