Multi-wavelength data on GRB 260310A support an off-axis jet model explaining weak prompt emission and bright delayed afterglow, including reverse-shock signatures and late X-ray rebrightening.
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No kilonova detected from sub-solar GW candidate S251112cm, but coincident IIb supernova SN 2025adtq yields suggestive evidence for the superkilonova channel, though inconclusive after accounting for chance coincidence.
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.
citing papers explorer
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An extremely bright slow-rising afterglow from an off-axis jet in GRB 260310A
Multi-wavelength data on GRB 260310A support an off-axis jet model explaining weak prompt emission and bright delayed afterglow, including reverse-shock signatures and late X-ray rebrightening.
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Electromagnetic Follow-up of the Sub-Solar Mass Gravitational Wave Candidate S251112cm: Kilonova Constraints and a Coincident IIb Supernova
No kilonova detected from sub-solar GW candidate S251112cm, but coincident IIb supernova SN 2025adtq yields suggestive evidence for the superkilonova channel, though inconclusive after accounting for chance coincidence.
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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.