The GWTC-4 BNS merger rate is 28–300 Gpc^-3 yr^-1, a factor of 3.6–18 lower than the cosmological short GRB rate and 2.3–5.1 lower than Galactic DNS estimates, implying an emerging tension among neutron-star merger probes.
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24 Pith papers cite this work, alongside 1 external citations. Polarity classification is still indexing.
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Beta particles from r-process decay heat and ionize kilonova ejecta non-locally, so transport and detailed atomic data change the predicted temperature and ionization state.
Dust from refractory r-process elements forms efficiently in kilonova ejecta and explains the observed late-time infrared spectra.
A simulation-based inference method with Gaussian process emulators trained on 1300 kilonova simulations recovers parameters accurately and rapidly while avoiding MCMC biases from likelihood misspecification.
Machine learning on precursor emission in 366 GRBs yields a simple prompt-only index EPI that separates merger-driven from collapsar-driven bursts at a threshold of 6.2.
GRB 210704A at z=2.34 shows a luminous fast blue transient excess peaking at ~7 days, modeled as refreshed shock emission and linked to LFBOTs alongside a high-Lorentz-factor jet.
Non-LTE models for He and Sr in kilonova ejecta show that ~1% He or 1-10% Sr can reproduce the 1μm absorption feature in AT2017gfo, implying low-Ye, low-entropy r-process conditions.
SPH simulations of repeated partial disruptions in 16 WD-BH/NS systems predict three categories of periodically modulated X-ray/GRB transients whose durations and peak rates depend on mass ratio and compactness.
First blind optical identification of a z=0.153 sub-luminous GRB afterglow with Ic-BL SN, yielding a volumetric rate consistent with on-axis high-luminosity long GRBs.
SN 2025ulz, once a kilonova candidate for GW trigger S250818k, is a type IIb supernova, and type IIb shock-cooling tails should be expected as interlopers in roughly 30% of comparable GW follow-ups.
GRB intrinsic duration distributions show a redshift-dependent plateau only at z>2 and for soft bursts, indicating collapsar dominance at high redshift and non-collapsar contributions at low redshift, with progenitor radius constrained to a few tenths of a solar radius.
Kilonova-like emissions after long GRBs GRB211211A and GRB230307A are consistent with collapsar nucleosynthesis using a single weak r-process component without lanthanide-rich material.
Treating select nuclear isomers as independent states with temperature-dependent rates in r-process networks yields predictions that the 743.3 keV Nb-97m and 555.6 keV Y-91m lines may be detectable at galactic distances by COSI, AMEGO, or LOX.
Late-time JWST/NIRCam data on GRB 250702B show a high-mass dusty host and possible ~3-sigma transient detections in two bands suggesting light-curve flattening.
Molecular dynamics simulations produce a new equation of state P(n_B, T) for warm neutron star outer crusts with tabulated data and neural network parametrization on Zenodo.
Simulations indicate that an optimized CTAO strategy could detect GeV-TeV emission from about 5% of GW-associated short GRBs, with detectability depending strongly on jet and viewing angles.
Short and long-short GRB rates of 195-666 Gpc^{-3} yr^{-1} exceed the 66-347 Gpc^{-3} yr^{-1} EM-bright NS merger rate from GW observations, challenging a pure NS merger origin.
Latest GW neutron star merger rates are consistent with short GRBs being produced by BNS mergers if jets are wide or rates low, with NSBH mergers subdominant.
No coincident GW signals found with long GRBs in O3 run; luminosity distance limits set assuming binary merger powering.
Host galaxy analysis rules out a globular cluster origin for the GRB 230307A kilonova and shows a disk-formed BNS merger with natal kicks can reach the observed offset in only 0.1% of population-synthesis realizations.
Magnetorotational r-process best explains lighter elements and CEJSN explains the third peak based on scatter and iron correlations in early metal-poor stars.
A review of early optical GRB features including prompt emission, reverse shocks, and afterglow onset, highlighting robotic telescopes' role in constraining jet Lorentz factors and magnetization.
Overview of synergies between SKA radio observations and gamma-ray facilities for studying transient, variable, and steady GeV-TeV sources.
citing papers explorer
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Implications of low neutron star merger rates for gamma-ray bursts, r-process production and Galactic double neutron stars
The GWTC-4 BNS merger rate is 28–300 Gpc^-3 yr^-1, a factor of 3.6–18 lower than the cosmological short GRB rate and 2.3–5.1 lower than Galactic DNS estimates, implying an emerging tension among neutron-star merger probes.
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Beta-Particle Transport and Thermalization in Kilonova Ejecta with Detailed Atomic Microphysics
Beta particles from r-process decay heat and ionize kilonova ejecta non-locally, so transport and detailed atomic data change the predicted temperature and ionization state.
-
Heavy element dust explains the late-time spectra of kilonovae
Dust from refractory r-process elements forms efficiently in kilonova ejecta and explains the observed late-time infrared spectra.
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Rapid and robust simulation-based inference for kilonovae
A simulation-based inference method with Gaussian process emulators trained on 1300 kilonova simulations recovers parameters accurately and rapidly while avoiding MCMC biases from likelihood misspecification.
-
Identifying Merger-Driven and Collapsar-Driven Gamma-Ray Bursts with Precursor based Solely on Prompt Emission
Machine learning on precursor emission in 366 GRBs yields a simple prompt-only index EPI that separates merger-driven from collapsar-driven bursts at a threshold of 6.2.
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GRB 210704A: A Luminous Fast Blue Transient in a GRB Afterglow at $z = 2.34$
GRB 210704A at z=2.34 shows a luminous fast blue transient excess peaking at ~7 days, modeled as refreshed shock emission and linked to LFBOTs alongside a high-Lorentz-factor jet.
-
Non-LTE Ionization Modeling for Helium and Strontium in Neutron Star Merger Ejecta
Non-LTE models for He and Sr in kilonova ejecta show that ~1% He or 1-10% Sr can reproduce the 1μm absorption feature in AT2017gfo, implying low-Ye, low-entropy r-process conditions.
-
Simulating the late stages of WD-BH/NS mergers: an origin for fast X-ray transients and GRBs with periodic modulations
SPH simulations of repeated partial disruptions in 16 WD-BH/NS systems predict three categories of periodically modulated X-ray/GRB transients whose durations and peak rates depend on mass ratio and compactness.
-
Early Multiwavelength Observations of AT 2026fgk: The Luminous Afterglow to Sub-luminous GRB 260310A, Identified Independently of a Gamma-ray Trigger
First blind optical identification of a z=0.153 sub-luminous GRB afterglow with Ic-BL SN, yielding a volumetric rate consistent with on-axis high-luminosity long GRBs.
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ENGRAVE follow-up of a type IIb supernova spatially coincident with the sub-threshold gravitational wave trigger S250818k
SN 2025ulz, once a kilonova candidate for GW trigger S250818k, is a type IIb supernova, and type IIb shock-cooling tails should be expected as interlopers in roughly 30% of comparable GW follow-ups.
-
The GRB Intrinsic Duration Distribution: Progenitor Insights Across Cosmic Time
GRB intrinsic duration distributions show a redshift-dependent plateau only at z>2 and for soft bursts, indicating collapsar dominance at high redshift and non-collapsar contributions at low redshift, with progenitor radius constrained to a few tenths of a solar radius.
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Kilonovae and Long-duration Gamma-ray Bursts
Kilonova-like emissions after long GRBs GRB211211A and GRB230307A are consistent with collapsar nucleosynthesis using a single weak r-process component without lanthanide-rich material.
-
Nuclear Isomers and Their Impact on Gamma-Ray Emission in Binary Neutron Star Mergers
Treating select nuclear isomers as independent states with temperature-dependent rates in r-process networks yields predictions that the 743.3 keV Nb-97m and 555.6 keV Y-91m lines may be detectable at galactic distances by COSI, AMEGO, or LOX.
-
Late-time JWST/NIRCam Observations of the Extremely Long-duration GRB 250702B/EP 250702a and Its Host Galaxy
Late-time JWST/NIRCam data on GRB 250702B show a high-mass dusty host and possible ~3-sigma transient detections in two bands suggesting light-curve flattening.
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Equation of State for warm Neutron Star outer crusts
Molecular dynamics simulations produce a new equation of state P(n_B, T) for warm neutron star outer crusts with tabulated data and neural network parametrization on Zenodo.
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Chasing Gamma-Ray Signals from Binary Neutron Star Coalescences with the Cherenkov Telescope Array: Prospects and Observing Strategies
Simulations indicate that an optimized CTAO strategy could detect GeV-TeV emission from about 5% of GW-associated short GRBs, with detectability depending strongly on jet and viewing angles.
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Neutron Star Merger Rates from Multi-messenger Observations: Clues to the Physical Origin of the Short and Long-short Gamma-ray Bursts
Short and long-short GRB rates of 195-666 Gpc^{-3} yr^{-1} exceed the 66-347 Gpc^{-3} yr^{-1} EM-bright NS merger rate from GW observations, challenging a pure NS merger origin.
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Wide Jets or Low Rates: Reconciling Short GRB and Gravitational-Wave Neutron Star Merger Rates
Latest GW neutron star merger rates are consistent with short GRBs being produced by BNS mergers if jets are wide or rates low, with NSBH mergers subdominant.
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Searching for gravitational waves from compact binary mergers powering long gamma-ray bursts during LIGO-Virgo-KAGRA's O3 run
No coincident GW signals found with long GRBs in O3 run; luminosity distance limits set assuming binary merger powering.
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Probing the origin of the kilonova candidate GRB 230307A: analysis of host galaxy and offset
Host galaxy analysis rules out a globular cluster origin for the GRB 230307A kilonova and shows a disk-formed BNS merger with natal kicks can reach the observed offset in only 0.1% of population-synthesis realizations.
-
The early r-process nucleosynthesis scenarios
Magnetorotational r-process best explains lighter elements and CEJSN explains the third peak based on scatter and iron correlations in early metal-poor stars.
-
Early Optical Follow-up of Gamma-Ray Bursts: The Critical Role of Robotic Telescopes
A review of early optical GRB features including prompt emission, reverse shocks, and afterglow onset, highlighting robotic telescopes' role in constraining jet Lorentz factors and magnetization.
-
SKAO and Gamma-Ray Synergies
Overview of synergies between SKA radio observations and gamma-ray facilities for studying transient, variable, and steady GeV-TeV sources.
- Gravitational wave detectability range informed by external messengers