论文标题
在黑洞光谱中检测高温黑体驼峰。强烈的红移歼灭线
Detection of a High-Temperature Blackbody Hump in Black Hole Spectra. The strongly redshifted annihilation line
论文作者
论文摘要
我们发现了一个所谓的高温黑体（HBB）组件，在15-40 keV范围内，在Blot-Band X射线能量光谱（BH）候选源中。使用来自五个银河BH二进制文件的数据，CYG X-1，GX 339-4，GRS 1915+105，SS 433和V4641〜SGR，在低/硬，中间，高/柔软和非常柔软的频谱（LHS）相对上（LHS），它们相应地相应地介绍，对此光谱特征进行了详细研究（GX 339-4，GRS 1915+105，SS 433和V4641〜SGR） rxte}，积分和bepposax数据。为了符合这些来源的宽带能量光谱，我们使用了由组合分量和高斯线组成的加法XSPEC模型。特别是，我们揭示了IS光谱具有HBB组件哪种色温，KT_HBB}在4.5-5.9 keV范围内。仅使用不同的X射线望远镜的IS（对于光子指数γ> 1.9），在这五个来源的某些光谱中已检测到此HBB特征。我们还证明，HBB-Feature的时间尺度比铁线及其边缘的时间尺度短。这使我们得出结论，这些光谱特征是在源的几何不同部分中形成的，并且没有相互连接。 Laurent＆Titarchuk（2018）使用Monte-Carlo模拟显示了BH中存在重力红移歼灭线的发射，因此观察到的HBB驼峰使我们暗示了此特征是在这些黑洞中观察到的重力换式歼灭线
We discovered a so called high-temperature blackbody (HBB) component, found in the 15 -- 40 keV range, in the broad-band X-ray energy spectra of black hole (BH) candidate sources. A detailed study of this spectral feature is presented using data from five of the Galactic BH binaries, Cyg X-1, GX 339-4, GRS 1915+105, SS 433 and V4641~Sgr in the low/hard, intermediate, high/soft and very soft spectral states (LHS, IS, HSS and VSS, respectively) and spectral transitions between them using {\it RXTE}, INTEGRAL and BeppoSAX data. In order to fit the broad-band energy spectra of these sources we used an additive XSPEC model, composed of the Comptonization component and the Gaussian line component. In particular, we reveal that the IS spectra have the HBB component which color temperature, kT_HBB} is in the range of 4.5 -- 5.9 keV. This HBB feature has been detected in some spectra of these five sources only in the IS (for the photon index Gamma>1.9) using different X-ray telescopes. We also demonstrate that a timescale of the HBB-feature is of orders of magnitude shorter than the timescale of the iron line and its edge. That leads us to conclude that these spectral features are formed in geometrically different parts of the source and which are not connected to each other. Laurent & Titarchuk (2018) demonstrated a presence of a gravitational redshifted annihilation line emission in a BH using the Monte-Carlo simulations and therefore the observed HBB hump leads us to suggest this feature is a gravitational redshifted annihilation line observed in these black holes
