Searching for candidates of coalescing binary black holes formed through chemically homogeneous evolution in GWTC-3

Abstract

The LIGO, Virgo, and KAGRA (LVK) collaboration has announced 90 coalescing binary black holes (BBHs) with $p_{\mathrm{astro}}>50\%$ to date, however, the origin of their formation channels is still an open scientific question. Given various properties of BBHs (BH component masses and individual spins) inferred using the default priors by the LVK, independent groups have been trying to explain the formation of the BBHs with different formation channels. Of all formation scenarios, the chemically homogeneous evolution (CHE) channel has stood out with distinguishing features, namely, nearly-equal component masses and preferentially high individual spins aligned with the orbital angular momentum. We perform Bayesian inference on the BBH events officially reported in GWTC-3 with astrophysically-predicted priors representing different formation channels of the isolated binary evolution (CEE: common-envelope evolution channel; CHE; SMT: stable mass transfer). Given assumed models, we report strong evidence for GW190517\_055101 being most likely to have formed through the CHE channel. Assuming the BBH events in the subsample are all formed through one of the isolated binary evolution channels, we obtain the lower limits on the local merger rate density of these channels at $11.45\mathrm{Gp}{\mathrm{c}}^{-3}\mathrm{y}{\mathrm{r}}^{-1}$ (CEE), $0.18\mathrm{Gp}{\mathrm{c}}^{-3}\mathrm{y}{\mathrm{r}}^{-1}$ (CHE), and $0.63\mathrm{Gp}{\mathrm{c}}^{-3}\mathrm{y}{\mathrm{r}}^{-1}$ (SMT) at $90\%$ credible level.

13 pages, 4 figures, 1 table

References in corpus (25)

• Binary interaction dominates the evolution of massive stars
• Pulsational Pair-Instability Supernovae
• Mind the gap: The location of the lower edge of the pair instability supernovae black hole mass gap
• Slowing the Spins of Stellar Cores
• Illuminating Black Hole Binary Formation Channels with Spins in Advanced LIGO
• One Channel to Rule Them All? Constraining the Origins of Binary Black Holes using Multiple Formation Pathways
• Lidov-Kozai Cycles with Gravitational Radiation: Merging Black Holes in Isolated Triple Systems
• Distinguishing Spin-Aligned and Isotropic Black Hole Populations With Gravitational Waves
• Rotational mixing in massive binaries: detached short-period systems
• Binary star progenitors of long gamma-ray bursts
• Formation of Double Compact Objects
• Ultra-luminous X-ray sources and neutron-star-black-hole mergers from very massive close binaries at low metallicity
• The curious case of GW200129: interplay between spin-precession inference and data-quality issues
• The spins of compact objects born from helium stars in binary systems
• The implications of high BH spins on the origin of BH-BH mergers
• Suspicious Siblings: The Distribution of Mass and Spin Across Component Black Holes in Isolated Binary Evolution
• An alternative interpretation of GW190412 as a binary black hole merger with a rapidly spinning secondary
• You Can't Always Get What You Want: The Impact of Prior Assumptions on Interpreting GW190412
• Do unequal-mass binary black hole systems have larger ${\chi }_{\text{eff}}$? Probing correlations with copulas in gravitational-wave astronomy
• Spin it as you like: the (lack of a) measurement of the spin tilt distribution with LIGO-Virgo-KAGRA binary black holes
• The ${\chi }_{\mathrm{eff}}-z$ correlation of field binary black hole mergers and how 3G gravitational-wave detectors can constrain it
• Stable mass transfer can explain massive binary black hole mergers with a high spin component
• Evaluating chemically homogeneous evolution in stellar binaries: Electromagnetic implications -- Ionizing photons, SLSN-I, GRB, Ic-BL
• Hypercritical Accretion for Black Hole High Spin in Cygnus X-1
• The spins of stripped B stars support magnetic internal angular momentum transport

Cited by in corpus (6)

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• Merging binary black holes formed through double-core evolution
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• An upper limit on the spins of merging binary black holes formed through binary evolution
• Prompt stellar and binary black hole mergers in tight triples: Insights from chemically homogeneous evolution
• Reassessing the Spin of Second-born Black Holes in Coalescing Binary Black Holes and Its Connection to the chi_eff-q Correlation