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Tag: Neutron star

  • Collapsar model can match some kilonova-like bursts

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    What the study found The authors report that recent kilonova-like emission after long-duration gamma-ray bursts, including GRB 211211A and GRB 230307A, can be explained by a collapsar scenario rather than only by a merger of two neutron stars. Why the authors say this matters The study suggests that a red evolution in these transients does…

  • NuSTAR sees a hard X-ray state after MAXI J1752–457 superburst

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    What the study found MAXI J1752–457 was observed with NuSTAR after a superburst, and the source was confirmed to match the previously seen Einstein Probe source EP240809a. The hard X-ray emission was consistent with a spherical blackbody component plus a steep nonthermal power-law component. Why the authors say this matters The authors conclude that the…