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dc.contributor.authorBuisson, Lise du
dc.contributor.authorMarchant, Pablo
dc.contributor.authorPodsiadlowski, Philipp
dc.contributor.authorKobayashi, Chiaki
dc.contributor.authorAbdalla, Filipe B.
dc.contributor.authorTaylor, Philip
dc.contributor.authorMandel, Ilya
dc.contributor.authorMink, Selma E. de
dc.contributor.authorMoriya, Takashi J.
dc.contributor.authorLanger, Norbert
dc.date.accessioned2020-10-22T11:30:01Z
dc.date.available2020-10-22T11:30:01Z
dc.date.issued2020-10-16
dc.identifier.citationBuisson , L D , Marchant , P , Podsiadlowski , P , Kobayashi , C , Abdalla , F B , Taylor , P , Mandel , I , Mink , S E D , Moriya , T J & Langer , N 2020 , ' Cosmic Rates of Black Hole Mergers and Pair-Instability Supernovae from Chemically Homogeneous Binary Evolution ' , Monthly Notices of the Royal Astronomical Society . https://doi.org/10.1093/mnras/staa3225
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 22799134
dc.identifier.otherPURE UUID: 80f5a346-5015-4c06-9ff1-bcb1bcf33af8
dc.identifier.otherArXiv: http://arxiv.org/abs/2002.11630v1
dc.identifier.otherORCID: /0000-0002-4343-0487/work/82470006
dc.identifier.urihttp://hdl.handle.net/2299/23308
dc.descriptionThis article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. © 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
dc.description.abstractDuring the first three observing runs of the Advanced gravitational-wave detector network, the LIGO/Virgo collaboration detected several black hole binary (BHBH) mergers. As the population of detected BHBH mergers grows, it will become possible to constrain different channels for their formation. Here we consider the chemically homogeneous evolution (CHE) channel in close binaries, by performing population synthesis simulations that combine realistic binary models with detailed cosmological calculations of the chemical and star-formation history of the Universe. This allows us to constrain population properties, as well as cosmological and aLIGO detection rates of BHBH mergers formed through this pathway. We predict a BHBH merger rate at redshift zero of $5.8 \hspace{1mm} \textrm{Gpc}^{-3} \textrm{yr}^{-1}$ through the CHE channel, to be compared with aLIGO's measured rate of ${53.2}_{-28.2}^{+55.8} \hspace{1mm} \text{Gpc}^{-3}\text{yr}^{-1}$, and find that eventual merger systems have BH masses in the range $17 - 43 \hspace{1mm} \textrm{M}_{\odot}$ below the pair-instability supernova (PISN) gap, and $>124 \hspace{1mm} \textrm{M}_{\odot}$ above the PISN gap. We further investigate the effects of momentum kicks during black hole formation, calculate cosmological and magnitude limited PISN rates and investigate the effects of high-redshift deviations in the star formation rate. We find that momentum kicks tend to increase delay times of BHBH systems, and our magnitude limited PISN rate estimates indicate that current deep surveys should be able to detect such events. Lastly, we find that our cosmological merger rate estimates change by at most $\sim 8\%$ for mild deviations of the star formation rate in the early Universe, and by up to $\sim 40\%$ for extreme deviations.en
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Society
dc.subjectastro-ph.HE
dc.subjectastro-ph.GA
dc.subjectastro-ph.SR
dc.titleCosmic Rates of Black Hole Mergers and Pair-Instability Supernovae from Chemically Homogeneous Binary Evolutionen
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
rioxxterms.versionAM
rioxxterms.versionofrecordhttps://doi.org/10.1093/mnras/staa3225
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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