NLTE calculations indicate strontium is required to explain the onset of the 1μm feature at early times in AT2017gfo, while helium can dominate at later epochs with plausible masses.
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M., Nakar, E., Singer, L
10 Pith papers cite this work. Polarity classification is still indexing.
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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.
A faint radio counterpart to SN 2025ulz was detected at 6-10 GHz, consistent with either supernova ejecta interacting with circumstellar material or an off-axis jet, supporting possible superkilonova scenarios.
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.
BOOM is a new high-throughput alert broker using Rust, MongoDB, Valkey and Kafka that matches prior ZTF features at ~7x speed and is extended as Babamul for LSST's 20 million nightly alerts.
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.
Simulations of the BSD instrument for POLAR-2 show it can localize faint GRBs like GRB 170817A to about 1.5 degrees accuracy, meeting requirements for supporting GRB polarimetry.
citing papers explorer
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Strontium and helium in the kilonova AT2017gfo: Origin of the 1{\mu}m feature constrained via NLTE calculations
NLTE calculations indicate strontium is required to explain the onset of the 1μm feature at early times in AT2017gfo, while helium can dominate at later epochs with plausible masses.
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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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Identification of a Radio Counterpart to SN 2025ulz in the S250818k Localization Area
A faint radio counterpart to SN 2025ulz was detected at 6-10 GHz, consistent with either supernova ejecta interacting with circumstellar material or an off-axis jet, supporting possible superkilonova scenarios.
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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.
- Eccentricity as a signature of hierarchical subsolar-mass mergers in collapsar disks
- Las Cumbres Observatory Gravitational-Wave Follow-up in the Third and Fourth Observing Runs: Strengths and Weaknesses of a Rapid Response Galaxy Targeted Strategy