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The Observed Rate of Binary Black Hole Mergers can be Entirely Explained by Globular Clusters

Rodriguez, Carl L. and Kremer, Kyle and Chatterjee, Sourav and Fragione, Giacomo and Loeb, Abraham and Rasio, Frederic A. and Weatherford, Newlin C. and Ye, Claire S. (2021) The Observed Rate of Binary Black Hole Mergers can be Entirely Explained by Globular Clusters. Research Notes of the AAS, 5 (1). Art. No. 19. ISSN 2515-5172. https://resolver.caltech.edu/CaltechAUTHORS:20210128-111631289

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Abstract

Since the first signal in 2015, the gravitational-wave detections of merging binary black holes (BBHs) by the LIGO and Virgo collaborations (LVC) have completely transformed our understanding of the lives and deaths of compact object binaries, and have motivated an enormous amount of theoretical work on the astrophysical origin of these objects. We show that the phenomenological fit to the redshift-dependent merger rate of BBHs from Abbott et al. is consistent with a purely dynamical origin for these objects, and that the current merger rate of BBHs from the LVC could be explained entirely with globular clusters alone. While this does not prove that globular clusters are the dominant formation channel, we emphasize that many formation scenarios could contribute a significant fraction of the current LVC rate, and that any analysis that assumes a single (or dominant) mechanism for producing BBH mergers is implicitly using a specious astrophysical prior.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.3847/2515-5172/abdf54DOIArticle
https://arxiv.org/abs/2101.07793arXivDiscussion Paper
ORCID:
AuthorORCID
Rodriguez, Carl L.0000-0003-4175-8881
Kremer, Kyle0000-0002-4086-3180
Chatterjee, Sourav0000-0002-3680-2684
Fragione, Giacomo0000-0002-7330-027X
Loeb, Abraham0000-0003-4330-287X
Rasio, Frederic A.0000-0002-7132-418X
Weatherford, Newlin C.0000-0002-9660-9085
Ye, Claire S.0000-0001-9582-881X
Additional Information:© 2021 The Author(s). Published by the American Astronomical Society. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. Received 2021 January 21; Accepted 2021 January 23; Published 2021 January 27.
Group:TAPIR
Subject Keywords:Astrophysical black holes ; Gravitational wave sources
Issue or Number:1
Record Number:CaltechAUTHORS:20210128-111631289
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210128-111631289
Official Citation:Carl L. Rodriguez et al 2021 Res. Notes AAS 5 19
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107786
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:28 Jan 2021 22:25
Last Modified:28 Jan 2021 23:04

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