论文标题
探索球状簇中X射线源的质量分离效应。 iv。黑洞燃烧的证据$ω$ CENTAURI
Exploring the Mass Segregation Effect of X-ray Sources in Globular Clusters. IV. Evidence of Black Hole Burning in $ω$ Centauri
论文作者
论文摘要
使用X射线源作为球状簇（GC）中恒星动力相互作用的敏感探针，我们研究了$ω$ CEN中的质量分离和二进制燃烧过程。我们表明，X射线源的质量分离以$ω$ cen淬灭，而X射线源丰度$ω$ CEN比其他GC小得多，二进制硬度比（定义为$ l _ {\ rm x}/（lm x}/（l _ {\ rm k} $ k} $ f _ f _ f _ f _ f _ { $ l _ {\ rm x} $和$ l _ {\ rm k} $ $ω$ cen的累积X射线和k频段发光度分别位于$ l _ {\ rm x}/（l _ {\ rm k} f _ {\ rm k} f _ {b} forlianty fornallation lo_ω$ cen的范围远低于$ l _ {\ rm x}/（ GCS。这些证据表明，二进制燃烧过程在$ω$ CEN中被高度抑制，而其他“加热机构”（很可能是黑洞子系统（BHS））对于$ω$ CEN的动态演化至关重要。通过“黑洞燃烧”过程（即BH二进制文件的动态硬化），BHS主要主导着$ω$ CEN的能源产生，这也使$ω$ CEN成为银河系中有前途的重力波源工厂。
Using X-ray sources as sensitive probes of stellar dynamical interactions in globular clusters (GCs), we study the mass segregation and binary burning processes in $ω$ Cen. We show that the mass segregation of X-ray sources is quenched in $ω$ Cen, while the X-ray source abundance of $ω$ Cen is much smaller than other GCs, and the binary hardness ratio (defined as $L_{\rm X}/(L_{\rm K}f_{b})$, with $f_{b}$ the binary fraction, $L_{\rm X}$ and $L_{\rm K}$ the cumulative X-ray and K band luminosity of GCs, respectively) of $ω$ Cen is located far below the $L_{\rm X}/(L_{\rm K}f_{b})-σ_{c}$ correlation line of the dynamically normal GCs. These evidences suggest that the binary burning processes are highly suppressed in $ω$ Cen, and other "heating mechanisms", very likely a black hole subsystem (BHS), are essential in the dynamical evolution of $ω$ Cen. Through the "black hole burning" processes (i.e., dynamical hardening of the BH binaries), the BHS is dominating the energy production of $ω$ Cen, which also makes $ω$ Cen a promising factory of gravitational-wave sources in the Galaxy.
