Linking the rates of neutron star binaries and short gamma-ray bursts

Abstract

Short gamma-ray bursts are believed to be produced by both binary neutron star (BNS) and neutron star-black hole (NSBH) mergers. We use current estimates for the BNS and NSBH merger rates to calculate the fraction of observable short gamma-ray bursts produced through each channel. This allows us to constrain merger rates of BNS to ${\mathcal{R}}_{\mathrm{BNS}}=384_{-213}^{+431}{\mathrm{Gpc}}^{-3}{\mathrm{yr}}^{-1}$ ($90\%$ credible interval), a $16\%$ decrease in the rate uncertainties from the second LIGO--Virgo Gravitational-Wave Transient Catalog, GWTC-2. Assuming a top-hat emission profile with a large Lorentz factor, we constrain the average opening angle of gamma-ray burst jets produced in BNS mergers to $\approx 15^{\circ }$. We also measure the fraction of BNS and NSBH mergers that produce an observable short gamma-ray burst to be $0.02_{-0.01}^{+0.02}$ and $0.01\pm 0.01$, respectively and find that $\gtrsim 40\%$ of BNS mergers launch jets (90\% confidence). We forecast constraints for future gravitational-wave detections given different modelling assumptions, including the possibility that BNS and NSBH jets are different. With $24$ BNS and $55$ NSBH observations, expected within six months of the LIGO-Virgo-KAGRA network operating at design sensitivity, it will be possible to constrain the fraction of BNS and NSBH mergers that launch jets with $10\%$ precision. Within a year of observations, we can determine whether the jets launched in NSBH mergers have a different structure than those launched in BNS mergers and rule out whether $\gtrsim 80\%$ of binary neutron star mergers launch jets. We discuss the implications of future constraints on understanding the physics of short gamma-ray bursts and binary evolution.

Accepted in Physical Review D: 13 pages, 5 figures

References in corpus (31)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• A NICER View of PSR J0030+0451: Millisecond Pulsar Parameter Estimation
• The Physics of Gamma-Ray Bursts and Relativistic Jets
• A kilonova as the electromagnetic counterpart to a gravitational-wave source
• Observation of gravitational waves from two neutron star-black hole coalescences
• GW170817: Joint Constraint on the Neutron Star Equation of State from Multimessenger Observations
• The rate, luminosity function and time delay of non-Collapsar short GRBs
• Impact of Massive Binary Star and Cosmic Evolution on Gravitational Wave Observations I: Black Hole-Neutron Star Mergers
• Different progenitors of short hard gamma-ray bursts
• Optical follow-up of the neutron star-black hole mergers S200105ae and S200115j
• The evolution of binary neutron star post-merger remnants: a review
• The Properties of Short gamma-ray burst Jets Triggered by neutron star mergers
• Fast-transient Searches in Real Time with ZTFReST: Identification of Three Optically-discovered Gamma-ray Burst Afterglows and New Constraints on the Kilonova Rate
• Light-curve models of black hole - neutron star mergers: steps towards a multi-messenger parameter estimation
• Modelling Neutron Star-Black Hole Binaries: Future Pulsar Surveys and Gravitational Wave Detectors
• Identification of a Local Sample of Gamma-Ray Bursts Consistent with a Magnetar Giant Flare Origin
• Black hole-neutron star mergers are unlikely multi-messenger sources
• The formation rate of short gamma-ray bursts and gravitational waves
• Imprints of r-process heating on fall-back accretion: distinguishing black hole-neutron star from double neutron star mergers
• A scalable random forest regressor for combining neutron-star equation of state measurements: A case study with GW170817 and GW190425
• What determines the structure of short gamma-ray burst jets?
• An empirical limit on the kilonova rate from the DLT40 one day cadence Supernova Survey
• Heavy double neutron stars: birth, mid-life and death
• GW200115: a non-spinning black hole -- neutron star merger
• Prospects for Measuring the Hubble Constant with Neutron-Star-Black-Hole Mergers
• Inferring the maximum and minimum mass of merging neutron stars with gravitational waves
• GRB 160625B: Evidence for a Gaussian-Shaped Jet
• Constraints on the electromagnetic counterpart of the Neutron Star Black Hole merger GW200115
• Fallback supernova assembly of heavy binary neutron stars and light black hole-neutron star pairs and the common stellar ancestry of GW190425 and GW200115
• The Luminosity Distribution of Short Gamma-Ray Bursts under a Structured Jet Scenario

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• Implications of low neutron star merger rates for gamma-ray bursts, r-process production and Galactic double neutron stars
• Chasing Gamma-Ray Signals from Binary Neutron Star Coalescences with the Cherenkov Telescope Array: Prospects and Observing Strategies
• Modelling the formation of the first two neutron star-black hole mergers, GW200105 and GW200115: metallicity, chirp masses and merger remnant spins
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