GW200115: a non-spinning black hole -- neutron star merger

Abstract

GW200115 was the second merger of a black hole and a neutron star confidently detected through gravitational waves. Inference on the signal allows for a large black hole spin misaligned with the orbital angular momentum, but shows little support for aligned spin values. We show that this is a natural consequence of measuring the parameters of a black hole -- neutron star binary with non-spinning components while assuming the priors used in the LIGO-Virgo-KAGRA analysis. We suggest that, a priori, a non-spinning binary is more consistent with current astrophysical understanding.

arXiv commentMinor updates to the version accepted to ApJ Letters

References in corpus (46)

• GW151226: Observation of Gravitational Waves from a 22-Solar-Mass Binary Black Hole Coalescence
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• Gravitational Waves from Mergin Compact Binaries: How Accurately Can One Extract the Binary's Parameters from the Inspiral Waveform?
• Frequency-domain gravitational waves from non-precessing black-hole binaries. II. A phenomenological model for the advanced detector era
• Dynamo action by differential rotation in a stably stratified stellar interior
• Observation of gravitational waves from two neutron star-black hole coalescences
• A simple model of complete precessing black-hole-binary gravitational waveforms
• Formation of Double Neutron Star Systems
• Computationally efficient models for the dominant and sub-dominant harmonic modes of precessing binary black holes
• Open data from the first and second observing runs of Advanced LIGO and Advanced Virgo
• Gravitational waves from inspiralling compact binaries: Parameter estimation using second-post-Newtonian waveforms
• The evolutionary roads leading to low effective spins, high black hole masses, and O1/O2 rates of LIGO/Virgo binary black holes
• Multipolar Effective-One-Body Waveforms for Precessing Binary Black Holes: Construction and Validation
• Most Black Holes are Born Very Slowly Rotating
• The origin of spin in binary black holes: Predicting the distributions of the main observables of Advanced LIGO
• The spin of the second-born black hole in coalescing binary black holes
• Spin-Orbit Misalignment in Close Binaries with Two Compact Objects
• The Masses and Spins of Neutron Stars and Stellar-Mass Black Holes
• Degeneracy between mass and spin in black-hole-binary waveforms
• It has to be cool: on supergiant progenitors of binary black hole mergers from common-envelope evolution
• The impact of mass-transfer physics on the observable properties of field binary black hole populations
• Impact of Massive Binary Star and Cosmic Evolution on Gravitational Wave Observations I: Black Hole-Neutron Star Mergers
• Black Hole and Neutron Star Binary Mergers in Triple Systems: Merger Fraction and Spin-Orbit Misalignment
• When can gravitational-wave observations distinguish between black holes and neutron stars?
• On the Origin of Black Hole Spin in High-mass X-Ray Binaries
• A Triple Origin for the Heavy and Low-Spin Binary Black Holes Detected by LIGO/Virgo
• GW150914: Spin based constraints on the merger time of the progenitor system
• Research Note: The Expected Spins of Gravitational Wave Sources With Isolated Field Binary Progenitors
• Gravitational-wave astrophysics with effective-spin measurements: asymmetries and selection biases
• The cosmic merger rate density evolution of compact binaries formed in young star clusters and in isolated binaries
• Inferring neutron star properties from GW170817 with universal relations
• Building better spin models for merging binary black holes: Evidence for non-spinning and rapidly spinning nearly aligned sub-populations
• Formation of the black-hole binary M33 X-7 via mass-exchange in a tight massive system
• Implications of the low binary black hole aligned spins observed by LIGO
• An alternative interpretation of GW190412 as a binary black hole merger with a rapidly spinning secondary
• Modelling Double Neutron Stars: Radio and Gravitational Waves
• Black Hole Formation in Fallback Supernova and the Spins of LIGO Sources
• Wind mass-loss rates of stripped stars inferred from Cygnus X-1
• No Detectable Kilonova Counterpart is Expected for O3 Neutron Star-Black Hole Candidates
• Double neutron star mergers from hierarchical triple-star systems
• Probing the Black Hole Metric. I. Black Hole Shadows and Binary Black-Hole Inspirals
• Demographics of neutron stars in young massive and open clusters
• The fate of Cyg X-1: an empirical lower limit on BH-NS merger rate
• Impact of natal kicks on merger rates and spin-orbit misalignments of black hole -- neutron star mergers
• On the large apparent black hole spin-orbit misalignment angle in GW200115
• Formation of the First Two Black Hole-Neutron Star Mergers (GW200115 and GW200105) from Isolated Binary Evolution

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• Compact Binary Coalescences: Astrophysical Processes and Lessons Learned
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• Linking the rates of neutron star binaries and short gamma-ray bursts
• Inferring the neutron star maximum mass and lower mass gap in neutron star-black hole systems with spin
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• A Channel to Form Fast-spinning Black Hole--Neutron Star Binary Mergers as Multi-messenger Sources
• Unequal-mass, highly-spinning binary black hole mergers in the stable mass transfer formation channel
• Electromagnetic precursors to black hole - neutron star gravitational wave events: Flares and reconnection-powered fast-radio transients from the late inspiral
• Orbital eccentricity in a neutron star - black hole merger
• Ultra wide black-hole - neutron star binaries as a possible source for gravitational waves and short gamma ray bursts
• Multi-Messenger Constraints on Magnetic Fields in Merging Black Hole-Neutron Star Binaries
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• Orbital Eccentricity and Spin-Orbit Misalignment Are Evidence that Neutron Star-Black Hole Mergers Form through Triple Star Evolution
• Formation of GW230529 from Isolated Binary Evolution
• Searching for candidates of coalescing binary black holes formed through chemically homogeneous evolution in GWTC-3
• Natal kicks of compact objects
• Constraints on Population I/II neutron star-black hole binary formation by gravitational wave and radio observations
• Characterizing Compact-object Binaries in the Lower Mass Gap with Gravitational Waves
• Modelling the formation of the first two neutron star-black hole mergers, GW200105 and GW200115: metallicity, chirp masses and merger remnant spins
• Gravitational-wave astronomy requires population-informed parameter estimation