Populations of Stellar-mass Black Holes from Binary Systems
Wiktorowicz,Grzegorz1,2,3; Wyrzykowski,?ukasz3; Chruslinska,Martyna4; Klencki,Jakub4; Rybicki,Krzysztof A.3; Belczynski,Krzysztof5
Source PublicationThe Astrophysical Journal
AbstractAbstract In large and complicated stellar systems like galaxies, it is difficult to predict the number and characteristics of a black hole (BH) population. Such populations may be modeled as an aggregation of homogeneous (i.e., having uniform star formation history and the same initial chemical composition) stellar populations. Using realistic evolutionary models, we predict the abundances and properties of BHs formed from binaries in these environments. We show that the BH population will be dominated by single BHs originating from binary disruptions and stellar mergers. Furthermore, we discuss how BH populations are influenced by such factors as initial parameters, metallicity, initial mass function, and natal kick models. As an example application of our results, we estimate that about 26 microlensing events happen every year in the direction of the Galactic Bulge due to BHs in a survey like OGLE-IV. Our results may be used to perform in-depth studies related to realistic BH populations, such as observational predictions for space survey missions like Gaia or Einstein Probe. We prepared a publicly available database with the raw data from our simulations to be used for more in-depth studies.
KeywordBlack holes Astrophysical black holes Stellar populations Binary stars X-ray binary stars Compact objects Gravitational microlensing Gravitational waves Stellar evolution
WOS IDIOP:0004-637X-885-1-ab45e6
PublisherThe American Astronomical Society
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Document Type期刊论文
Affiliation1.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, People’s Republic of China;
2.School of Astronomy & Space Science, University of the Chinese Academy of Sciences, Beijing 100012, People’s Republic of China
3.Astronomical Observatory, Warsaw University, Al. Ujazdowskie 4, 00-478 Warsaw, Poland
4.Institute of Mathematics, Astrophysics and Particle Physics, Radboud University Nijmegen, P.O. Box 9010, 6500 GL, The Netherlands
5.Nicolaus Copernicus Astronomical Center, Polish Academy of Sciences, Bartycka 18, 00-716 Warsaw, Poland
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
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GB/T 7714
Wiktorowicz,Grzegorz,Wyrzykowski,?ukasz,Chruslinska,Martyna,et al. Populations of Stellar-mass Black Holes from Binary Systems[J]. The Astrophysical Journal,2019,885(1).
APA Wiktorowicz,Grzegorz,Wyrzykowski,?ukasz,Chruslinska,Martyna,Klencki,Jakub,Rybicki,Krzysztof A.,&Belczynski,Krzysztof.(2019).Populations of Stellar-mass Black Holes from Binary Systems.The Astrophysical Journal,885(1).
MLA Wiktorowicz,Grzegorz,et al."Populations of Stellar-mass Black Holes from Binary Systems".The Astrophysical Journal 885.1(2019).
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