Use of gravitational waves to probe the formation channels of compact binaries
Name
1503.04307.pdf
Description
Submitted version
Size
2.25 MB
Format
Adobe PDF
Checksum (MD5)
bacda685aa6d81e52bd8bfdef5d1cb99
Author(s)
Vitale, Salvatore
Lynch, Ryan
Sturani, Riccardo
Graff, Philip
Date Issued
2017
Journal
Classical and Quantum Gravity
Publisher
IOP Publishing
Citation
Vitale, Salvatore, et al. "Use of Gravitational Waves to Probe the Formation Channels of Compact Binaries." Classical and Quantum Gravity 34 3 (2017).
Version
Original manuscript
Abstract
© 2017 IOP Publishing Ltd. With the discovery of the binary black hole coalescences GW150914 and GW151226, the era of gravitational-wave astrophysics has started. Gravitational-wave signals emitted by compact binary coalescences will be detected in large number by LIGO and Virgo in the coming months and years. Much about compact binaries is still uncertain, including some key details about their formation channels. The two scenarios which are typically considered, common envelope evolution and dynamical capture, result in different distributions for the orientation of the black hole spins. In particular, common envelope evolution is expected to be highly efficient in aligning spins with the orbital angular momentum. In this paper we simulate catalogs of gravitational-wave signals in which a given fraction of events comes from common envelope evolution, and has spins nearly aligned with the orbital angular momentum. We show how the fraction of aligned systems can be accurately estimated using Bayesian parameter estimation, with 1 σ uncertainties of the order of 10% after 100-200 sources are detected.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution-Noncommercial-Share Alike
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DOI of Published Version
https://doi.org/10.1088/1361-6382/AA552E
