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astro-ph.HE2024
Radioactive Gamma-Ray Lines from Long-lived Neutron Star Merger Remnants
Meng-Hua Chen, Li-Xin Li, En-Wei Liang
The observation of a kilonova AT2017gfo associated with the gravitational wave event GW170817 provides the first strong evidence that neutron star mergers are dominant contributors…
astro-ph.HE2024
Ejecta-circumstellar medium interaction in high-density environment contribution to kilonova emission: Application to GRB 191019A
Suo-Ning Wang, Hou-Jun Lü, Yong Yuan +4
The nearby long-duration GRB 191019A recently detected by Swift lacks an associated supernova and belongs to a host galaxy with little star formation activity, suggesting that the…
astro-ph.HE2024
Neutron Star Mergers as the Dominant Contributor to the Production of Heavy -Process Elements
Meng-Hua Chen, Li-Xin Li, Qiu-Hong Chen +2
The discovery of the radioactively powered kilonova AT2017gfo, associated with the short-duration gamma-ray burst GRB 170817A and the gravitational wave source GW170817, has provid…