A nearby long gamma-ray burst from a merger of compact objects

Troja, E.; Fryer, Chris L.; O’Connor, Brendan; Ryan, Geoffrey; Dichiara, S.; Kumar, Amit; Ito, N.; Gupta, Rahul; Wollaeger, Ryan; Norris, J. P.; Kawai, N.; Butler, N.; Aryan, Amar; Misra, Kuntal; Hosokawa, R.; Murata, Katsuhiro L.; Niwano, Masafumi; Pandey, S. B.; Kutyrev, A.; Eerten, Hendrik van; Chase, E. A.; Hu, Y. D.; Caballero‐García, M. D.; Castro‐Tirado, A. J.

doi:10.1038/s41586-022-05327-3

articleNatureDec 7, 2022HYBRID OA

A nearby long gamma-ray burst from a merger of compact objects

ETE. Troja CLChris L. Fryer BOBrendan O’Connor GRGeoffrey Ryan SDS. Dichiara

University of Rome Tor Vergata · Arizona State University · +16 more institutions

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Abstract

Abstract Gamma-ray bursts (GRBs) are flashes of high-energy radiation arising from energetic cosmic explosions. Bursts of long (greater than two seconds) duration are produced by the core-collapse of massive stars 1 , and those of short (less than two seconds) duration by the merger of compact objects, such as two neutron stars 2 . A third class of events with hybrid high-energy properties was identified 3 , but never conclusively linked to a stellar progenitor. The lack of bright supernovae rules out typical core-collapse explosions 4–6 , but their distance scales prevent sensitive searches for direct signatures of a progenitor system. Only tentative evidence for a kilonova has been presented 7,8 . Here we…

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Keywords

Astrophysics
Physics
Gamma-ray burst
Astronomy

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