The role of core-collapse physics in the observability of black-hole neutron-star mergers as multi-messenger sources

Abstract

Recent detailed 1D core-collapse simulations have brought new insights on the final fate of massive stars, which are in contrast to commonly used parametric prescriptions. In this work, we explore the implications of these results to the formation of coalescing black-hole (BH) - neutron-star (NS) binaries, such as the candidate event GW190426_152155 reported in GWTC-2. Furthermore, we investigate the effects of natal kicks and the NS's radius on the synthesis of such systems and potential electromagnetic counterparts linked to them. Synthetic models based on detailed core-collapse simulations result in an increased merger detection rate of BH-NS systems ($\sim 2.3$ yr${}^{-1}$), 5 to 10 times larger than the predictions of "standard" parametric prescriptions. This is primarily due to the formation of low-mass BH via direct collapse, and hence no natal kicks, favored by the detailed simulations. The fraction of observed systems that will produce an electromagnetic counterpart, with the detailed supernova engine, ranges from $2$-$25$%, depending on uncertainties in the NS equation of state. Notably, in most merging systems with electromagnetic counterparts, the NS is the first-born compact object, as long as the NS's radius is $\lesssim 12\mathrm{km}$. Furthermore, core-collapse models that predict the formation of low-mass BHs with negligible natal kicks increase the detection rate of GW190426_152155-like events to $\sim 0.6$yr${}^{-1}$; with an associated probability of electromagnetic counterpart $\le 10$% for all supernova engines. However, increasing the production of direct-collapse low-mass BHs also increases the synthesis of binary BHs, over-predicting their measured local merger density rate. In all cases, models based on detailed core-collapse simulation predict a ratio of BH-NSs to binary BHs merger rate density that is at least twice as high as other prescriptions.

13 pages, 5 figures, 3 tables

References in corpus (24)

• Modules for Experiments in Stellar Astrophysics (MESA)
• Multi-messenger Observations of a Binary Neutron Star Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• Binary interaction dominates the evolution of massive stars
• GW190814: Gravitational Waves from the Coalescence of a 23 M${}_{\odot }$ Black Hole with a 2.6 M${}_{\odot }$ Compact Object
• Modules for Experiments in Stellar Astrophysics (MESA): Pulsating Variable Stars, Rotation, Convective Boundaries, and Energy Conservation
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• Slowing the Spins of Stellar Cores
• One Channel to Rule Them All? Constraining the Origins of Binary Black Holes using Multiple Formation Pathways
• The Landscape of the Neutrino Mechanism of Core-Collapse Supernovae: Neutron Star and Black Hole Mass Functions, Explosion Energies and Nickel Yields
• Investigating stellar-mass black hole kicks
• The Explosion of Helium Stars Evolved With Mass Loss
• Neutron star kicks by the gravitational tug-boat mechanism in asymmetric supernova explosions: progenitor and explosion dependence
• The Origin of Black Hole Spin in Galactic Low-Mass X-ray Binaries
• Mass Transfer from Giant Donors
• Common envelope ejection in massive binary stars - Implications for the progenitors of GW150914 and GW151226
• Exploring the Lower Mass Gap and Unequal Mass Regime in Compact Binary Evolution
• Simple recipes for compact remnant masses and natal kicks
• Towards a Realistic Explosion Landscape for Binary Population Synthesis
• The Galactic distribution of X-ray binaries and its implications for compact object formation and natal kicks
• Long Gamma-Ray Burst Progenitors: Boundary Conditions and Binary Models
• Is GW190425 consistent with being a neutron star$-$black hole merger?
• Electron Capture Supernovae From Close Binary Systems
• The most massive progenitors of neutron stars: CXO J164710.2-455216

Cited by in corpus (23)

• Rates of Compact Object Coalescences
• Impact of Massive Binary Star and Cosmic Evolution on Gravitational Wave Observations I: Black Hole-Neutron Star Mergers
• Binary Black Hole Formation with Detailed Modeling: Stable Mass Transfer Leads to Lower Merger Rates
• The Science of the Einstein Telescope
• Black hole-neutron star mergers are unlikely multi-messenger sources
• Constraining scalar-tensor theories by neutron star-balck hole gravitational wave events
• Long-duration Gamma-ray Burst and Associated Kilonova Emission from Fast-spinning Black Hole--Neutron Star Mergers
• Population properties and multimessenger prospects of neutron star-black hole mergers following GWTC-3
• Revisiting the explodability of single massive star progenitors of stripped-envelope supernovae
• Probing the progenitors of spinning binary black-hole mergers with long gamma-ray bursts
• Comparing Compact Object Distributions from Mass- and Presupernova Core Structure-based Prescriptions
• Population Properties of Gravitational-Wave Neutron Star--Black Hole Mergers
• A Channel to Form Fast-spinning Black Hole--Neutron Star Binary Mergers as Multi-messenger Sources
• The Galactic Underworld: The spatial distribution of compact remnants
• Nucleosynthesis in outflows of compact objects and detection prospects of associated kilonovae
• Simulations of the progenitors of black hole-neutron star gravitational wave sources
• Multi-messenger prospects for black hole - neutron star mergers in the O4 and O5 runs
• Active Learning for Computationally Efficient Distribution of Binary Evolution Simulations
• The more accurately the metal-dependent star formation rate is modeled, the larger the predicted excess of binary black hole mergers
• Multi-messenger observations in the Einstein Telescope era: binary neutron star and black hole - neutron star mergers
• Challenges in Forming Millisecond Pulsar-Black Holes from Isolated Binaries
• Compact object populations over cosmic time I. BOSSA: a Binary Object environment-Sensitive Sampling Algorithm
• Impact of Massive Binary Star and Cosmic Evolution on Gravitational Wave Observations II: Double Compact Object Rates and Properties