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Mind the Gap: The Location of the Lower Edge of the Pair-instability Supernova Black Hole Mass Gap
Farmer,R.1; Renzo,M.2; de Mink,S. E.1,3; Marchant,P.4; Justham,S.1,5,6
2019-12-10
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume887Issue:1
AbstractAbstract Detections of gravitational waves are now starting to probe the mass distribution of stellar mass black holes (BHs). Robust predictions from stellar models are needed to interpret these. Theory predicts the existence of a gap in the BH mass distribution because of pair-instability supernovae. The maximum BH mass below the gap is the result of pulsational mass loss. We evolve massive helium stars through their late hydrodynamical phases of evolution using the open-source MESA stellar evolution code. We find that the location of the lower edge of the mass gap at 45 is remarkably robust against variations in the metallicity (≈3 ), the treatment of internal mixing (≈1 ), and stellar wind mass loss (≈4 ), making it the most robust predictor for the final stages of the evolution of massive stars. The reason is that the onset of the instability is dictated by the near-final core mass, which in turn sets the resulting BH mass. However, varying the reaction rate within its 1σ uncertainties shifts the location of the gap between 40 and 56 . We provide updated analytic fits for population synthesis simulations. Our results imply that the detection of merging BHs can provide constraints on nuclear astrophysics. Furthermore, the robustness against metallicity suggests that there is a universal maximum for the location of the lower edge of the gap, which is insensitive to the formation environment and redshift for first-generation BHs. This is promising for the possibility to use the location of the gap as a “standard siren” across the universe.
KeywordMassive stars Stellar mass loss Supernovae Astrophysical black holes Stellar mass black holes Stellar evolution
DOI10.3847/1538-4357/ab518b
Language英语
WOS IDIOP:0004-637X-887-1-ab518b
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/28671
Collection中国科学院国家天文台
Affiliation1.Anton Pannekoek Institute for Astronomy and GRAPPA, University of Amsterdam, NL-1090 GE Amsterdam, The Netherlands; r.j.farmer@uva.nl
2.Computational Astrophysics, Flatiron Institute, New York, NY 10010, USA
3.Center for Astrophysics—Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA
4.Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA) and Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA
5.School of Astronomy & Space Science, University of the Chinese Academy of Sciences, Beijing 100012, People's Republic of China
6.National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, People's Republic of China
Recommended Citation
GB/T 7714
Farmer,R.,Renzo,M.,de Mink,S. E.,et al. Mind the Gap: The Location of the Lower Edge of the Pair-instability Supernova Black Hole Mass Gap[J]. The Astrophysical Journal,2019,887(1).
APA Farmer,R.,Renzo,M.,de Mink,S. E.,Marchant,P.,&Justham,S..(2019).Mind the Gap: The Location of the Lower Edge of the Pair-instability Supernova Black Hole Mass Gap.The Astrophysical Journal,887(1).
MLA Farmer,R.,et al."Mind the Gap: The Location of the Lower Edge of the Pair-instability Supernova Black Hole Mass Gap".The Astrophysical Journal 887.1(2019).
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