X-ray studies of normal late-type galaxies have shown that non-nuclear X-ray emission is typically dominated by X-ray binaries, and provides a useful measure of star formation activity. We have modeled the X-ray evolution of late-type galaxies over the $\sim$ 14 Gyr of cosmic history, with an evolutionary population synthesis code developed by Hurley et al. Our calculations reveal a decrease of the X-ray luminosity-to-mass ratio $L_{\rm X}/M$ with time, in agreement with observations (Fig.~7$a$). We show that this decrease is a natural consequence of stellar and binary evolution and mass accumulating process in galaxies. The X-ray-to-optical luminosity ratio $L_{\rm X}/L_{\rm B}$ is found to be fairly constant (around $\sim 10^{30}$ erg\,s$^{-1}$$L_{\rm B,\odot}^{-1}$, Fig.~7$b$), and insensitive to the star formation history in the galaxies. The nearly constant value of $L_{\rm X}/L_{\rm B}$ is in conflict with the observed increase in $L_{\rm X}/L_{\rm B}$ from $z=0$ to 1.4. The discrepancy may be caused by intense obscured star formation activity that leads to nonlinear relationship between X-ray and B-band emission.
Theoretical expectations for high-mass X-ray binaries, supernova remnants, and their evolutionary paths: An overview talk for LIAC41: the eventful life of stellar multiples
A Path to Constraints on Common Envelope Ejection in Massive Binaries: Full Evolutionary Reconstruction of Three Black Hole X-ray Binaries
International Centre of Supernovae (ICESUN), Yunnan Key Laboratory of Supernova Research, Yunnan Observatories, Chinese Academy of Sciences (CAS)(中国科学院云南天文台);University of Chinese Academy of Sciences(中国科学院大学);Institute of Science and Technology Austria(奥地利科学技术研究所)
Why most neutron star low-mass X-ray binaries accrete transiently: an evolutionary study of transient and persistent phases
Indian Institute of Science Education and Research Bhopal(印度科学教育研究所博帕尔分校);Tata Institute of Fundamental Research(塔塔基础研究所);Center for Theoretical Physics(理论物理中心)
On the displacement of X-ray binaries from star clusters in star-burst galaxies
我们用Hurley等人(2000,2002)开发的演化总体合成程序模拟了星暴星系中亮X射线双星从星团中的位移。与Kaaret et al.(2004)一致,我们发现X射线源与其母星系团之间存在显著的空间偏移,并且可以粗略地重建表观X射线亮度与位移的相关性。相关性对簇的基本属性不敏感(例如,初始质量函数的双星)和踢速度赋予新生的紧凑型恒星,除了共同的信封参数。本文给出了当前X射线双星主要参数的分布,这些分布可用于约束未来光学观测中X射线双星形成和演化的模型。
Diagnosing the Properties and Evolutionary Fates of Black Hole and Wolf-Rayet X-ray Binaries as Potential Gravitational Wave Sources for the LIGO-Virgo-KAGRA Network
Anhui Normal University(安徽师范大学);Université de Genève(日内瓦大学);Purple Mountain Observatory, Chinese Academy of Sciences(中国科学院紫金山天文台);Guizhou University(贵州大学);Zhejiang University of Water Resources and Electric Power(浙江水利水电学院)
The diverse morphology of gravitational wave signals from merging neutron-star white-dwarf binaries
State Key Laboratory of Radio Astronomy and Technology, National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台射电天文与技术重点实验室);CAS Key Laboratory for Computational Astrophysics, National Astronomical Observatories, Chinese Academy of Sciences(中国科学院国家天文台计算天体物理重点实验室);School of Astronomy and Space Sciences, University of Chinese Academy of Sciences(中国科学院大学天文与空间科学学院);Armagh Observatory and Planetarium(阿马赫天文台和天文馆);National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences(中国科学院国家天文台/云南天文台);School of Physical Science and Technology, Lanzhou University(兰州大学物理科学与技术学院);School of Physics and Technology, Wuhan University(武汉大学物理科学与技术学院)
The metallicity dependence and evolutionary times of merging binary black holes: Combined constraints from individual gravitational-wave detections and the stochastic background