Chemically homogeneous evolution: a rapid population synthesis approach
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Chemically homogeneous evolution : a rapid population synthesis approach. / Riley, Jeff; Mandel, Ilya; Marchant, Pablo; Butler, Ellen; Nathaniel, Kaila; Neijssel, Coenraad; Shortt, Spencer; Vigna-Gomez, Alejandro.
I: Monthly Notices of the Royal Astronomical Society, Bind 505, Nr. 1, 02.07.2021, s. 663-676.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Chemically homogeneous evolution
T2 - a rapid population synthesis approach
AU - Riley, Jeff
AU - Mandel, Ilya
AU - Marchant, Pablo
AU - Butler, Ellen
AU - Nathaniel, Kaila
AU - Neijssel, Coenraad
AU - Shortt, Spencer
AU - Vigna-Gomez, Alejandro
PY - 2021/7/2
Y1 - 2021/7/2
N2 - We explore chemically homogeneous evolution (CHE) as a formation channel for massive merging binary black holes (BBHs). We develop methods to include CHE in a rapid binary population synthesis code, Compact Object Mergers: Population Astrophysics and Statistics (compas), which combines realistic models of binary evolution with cosmological models of the star formation history of the Universe. For the first time, we simultaneously explore conventional isolated binary star evolution under the same set of assumptions. This approach allows us to constrain population properties and make simultaneous predictions about the gravitational-wave detection rates of BBH mergers for the CHE and conventional formation channels. The overall mass distribution of detectable BBHs is consistent with existing gravitational-wave observations. We find that the CHE channel may yield up to of all gravitational-wave detections of BBH mergers coming from isolated binary evolution.
AB - We explore chemically homogeneous evolution (CHE) as a formation channel for massive merging binary black holes (BBHs). We develop methods to include CHE in a rapid binary population synthesis code, Compact Object Mergers: Population Astrophysics and Statistics (compas), which combines realistic models of binary evolution with cosmological models of the star formation history of the Universe. For the first time, we simultaneously explore conventional isolated binary star evolution under the same set of assumptions. This approach allows us to constrain population properties and make simultaneous predictions about the gravitational-wave detection rates of BBH mergers for the CHE and conventional formation channels. The overall mass distribution of detectable BBHs is consistent with existing gravitational-wave observations. We find that the CHE channel may yield up to of all gravitational-wave detections of BBH mergers coming from isolated binary evolution.
KW - gravitational waves
KW - stars: evolution
KW - stars: massive
KW - black hole mergers
KW - binaries: close
KW - EQUATION-OF-STATE
KW - BLACK-HOLE MERGERS
KW - MASSIVE STARS
KW - DIFFERENT METALLICITIES
KW - STELLAR EVOLUTION
KW - PAIR-INSTABILITY
KW - BINARY STARS
KW - EXPLOSION
KW - SUPERNOVAE
KW - DYNAMICS
U2 - 10.1093/mnras/stab1291
DO - 10.1093/mnras/stab1291
M3 - Journal article
VL - 505
SP - 663
EP - 676
JO - Royal Astronomical Society. Monthly Notices
JF - Royal Astronomical Society. Monthly Notices
SN - 0035-8711
IS - 1
ER -
ID: 276326641