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Populations of Stellar-mass Black Holes from Binary Systems

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dc.abstract.enIn 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.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorWiktorowicz, Grzegorz
dc.contributor.authorWyrzykowski, Łukasz
dc.contributor.authorChruslinska, Martyna
dc.contributor.authorKlencki, Jakub
dc.contributor.authorRybicki, Krzysztof
dc.contributor.authorBelczyński, Krzysztof
dc.date.accessioned2024-01-25T17:10:19Z
dc.date.available2024-01-25T17:10:19Z
dc.date.copyright2019-07-23
dc.date.issued2019
dc.description.accesstimeBEFORE_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number1
dc.description.versionORIGINAL_AUTHOR
dc.description.volume885
dc.identifier.doi10.3847/1538-4357/AB45E6
dc.identifier.issn0004-637X
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/116524
dc.identifier.weblinkhttp://adsabs.harvard.edu/abs/2019ApJ...885....1W
dc.languageeng
dc.pbn.affiliationastronomy
dc.relation.ispartofAstrophysical Journal
dc.relation.pages1
dc.rightsOther
dc.sciencecloudnosend
dc.titlePopulations of Stellar-mass Black Holes from Binary Systems
dc.typeJournalArticle
dspace.entity.typePublication