Long-duration Gamma-ray Burst and Associated Kilonova Emission from Fast-spinning Black Hole--Neutron Star Mergers

Abstract

Here we collect three unique bursts, GRBs\,060614, 211211A and 211227A, all characterized by a long-duration main emission (ME) phase and a rebrightening extended emission (EE) phase, to study their observed properties and the potential origin as neutron star-black hole (NSBH) mergers. NS-first-born (BH-first-born) NSBH mergers tend to contain fast-spinning (non-spinning) BHs that more easily (hardly) allow tidal disruption to happen with (without) forming electromagnetic signals. We find that NS-first-born NSBH mergers can well interpret the origins of these three GRBs, supported by that: (1) Their X-ray MEs and EEs show unambiguous fall-back accretion signatures, decreasing as $\propto t^{-5/3}$, which might account for their long duration. The EEs can result from the fall-back accretion of $r$-process heating materials, predicted to occur after NSBH mergers. (2) The beaming-corrected local event rate density for this type of merger-origin long-duration GRBs is ${\mathcal{R}}_0\sim 2.4_{-1.3}^{+2.3}{\mathrm{Gpc}}^{-3}{\mathrm{yr}}^{-1}$, consistent with that of NS-first-born NSBH mergers. (3) Our detailed analysis on the EE, afterglow and kilonova of the recently high-impact event GRB\,211211A reveals it could be a merger between a $\sim 1.23_{-0.07}^{+0.06}{M}_{\odot }$ NS and a $\sim 8.21_{-0.75}^{+0.77}{M}_{\odot }$ BH with an aligned-spin of ${\chi }_{\mathrm{BH}}\sim 0.62_{-0.07}^{+0.06}$, supporting an NS-first-born NSBH formation channel. Long-duration burst with rebrightening fall-back accretion signature after ME, and bright kilonova might be commonly observed features for on-axis NSBHs. We estimate the multimessenger detection rate between gravitational waves, GRBs and kilonovae from NSBH mergers in O4 (O5) is $\sim 0.1{\mathrm{yr}}^{-1}$ ($\sim 1{\mathrm{yr}}^{-1}$).

15 pages, 5 figures, 2 tables, accepted by ApJL

References in corpus (50)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Multi-messenger Observations of a Binary Neutron Star Merger
• Gravitational Waves and Gamma-rays from a Binary Neutron Star Merger: GW170817 and GRB 170817A
• The Supernova -- Gamma-Ray Burst Connection
• An Ordinary Short Gamma-Ray Burst with Extraordinary Implications: Fermi-GBM Detection of GRB 170817A
• Origin of the heavy elements in binary neutron-star mergers from a gravitational wave event
• Swope Supernova Survey 2017a (SSS17a), the Optical Counterpart to a Gravitational Wave Source
• Spectroscopic identification of r-process nucleosynthesis in a double neutron star merger
• The Physics of Gamma-Ray Bursts and Relativistic Jets
• INTEGRAL Detection of the First Prompt Gamma-Ray Signal Coincident with the Gravitational Wave Event GW170817
• The X-ray counterpart to the gravitational wave event GW 170817
• A kilonova as the electromagnetic counterpart to a gravitational-wave source
• Light Curves of the Neutron Star Merger GW170817/SSS17a: Implications for R-Process Nucleosynthesis
• Illuminating Gravitational Waves: A Concordant Picture of Photons from a Neutron Star Merger
• Observation of gravitational waves from two neutron star-black hole coalescences
• Optical emission from a kilonova following a gravitational-wave-detected neutron-star merger
• Comprehensive nucleosynthesis analysis for ejecta of compact binary mergers
• Swift and NuSTAR observations of GW170817: detection of a blue kilonova
• Discerning the physical origins of cosmological Gamma-ray bursts based on multiple observational criteria: the cases of z=6.7 GRB 080913, z=8.3 GRB 090423, and some short/hard GRBs
• An enigmatic long-lasting gamma-ray burst not accompanied by a bright supernova
• The Electromagnetic Counterpart of the Binary Neutron Star Merger LIGO/VIRGO GW170817. V. Rising X-ray Emission from an Off-Axis Jet
• UV star-formation rates of GRB host galaxies
• Electromagnetic Evidence that SSS17a is the Result of a Binary Neutron Star Merger
• AT2017gfo: an anisotropic and three-component kilonova counterpart of GW170817
• Making a Short Gamma-Ray Burst from a Long one: Implications for the Nature of GRB 060614
• Fallback accretion in the aftermath of a compact binary merger
• Hyper-accreting black hole as GRB central engine. I: Baryon loading in GRB jets
• The optical afterglow of GW170817 at one year post-merger
• The Ep,i - Eiso correlation: type I gamma-ray bursts and the new classification method
• Outflows from accretion disks formed in neutron star mergers: effect of black hole spin
• Optical follow-up of the neutron star-black hole mergers S200105ae and S200115j
• Giant X-ray Bump in GRB 121027A: Evidence for Fall-back Disk Accretion
• The optical afterglows and host galaxies of three short/hard gamma-ray bursts
• The Prompt Gamma-Ray and Afterglow Energies of Short-Duration Gamma-Ray Bursts
• Hyperaccreting Black Hole as Gamma-Ray Burst Central Engine. II. Temporal evolution of central engine parameters during Prompt and Afterglow Phases
• A Comparative Study of Long and Short GRBs. I. Overlapping Properties
• Modelling Neutron Star-Black Hole Binaries: Future Pulsar Surveys and Gravitational Wave Detectors
• On the possibility of GW190425 being a black hole--neutron star binary merger
• The Delay Time of Gravitational Wave -- Gamma-Ray Burst Associations
• Implications of the search for optical counterparts during the second part of the Advanced LIGO's and Advanced Virgo's third observing run: lessons learned for future follow-up observations
• Imprints of r-process heating on fall-back accretion: distinguishing black hole-neutron star from double neutron star mergers
• Black holes, disks and jets following binary mergers and stellar collapse: The narrow range of EM luminosities and accretion rates
• Swift-XRT follow-up of gravitational wave triggers during the third aLIGO/Virgo observing run
• 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
• Black hole-neutron star coalescence: effects of the neutron star spin on jet launching and dynamical ejecta mass
• The properties of prompt emission in short GRBs with extended emission observed by {\em Fermi}/GBM
• Multi-Messenger Constraints on Magnetic Fields in Merging Black Hole-Neutron Star Binaries
• Luminosity function and event rate density of XMM-Newton-selected supernova shock-breakout candidates
• The mass, spin and rotational energy of the remnant black holes from compact binary mergers

Cited by in corpus (4)

• GRB 211211A: a Neutron Star$-$White Dwarf Merger?
• Evidence for two distinct populations of kilonova-associated Gamma Ray Bursts
• GRB 221009A: An ordinary nearby GRB with extraordinary observational properties
• Simulations of the progenitors of black hole-neutron star gravitational wave sources