GRB 250702B: discovery of a gamma-ray burst from a black hole falling into a star
Eliza Neights; Eric Burns; Chris L. Fryer; D. Svinkin; Suman Bala; R. Hamburg; Ramandeep Gill; Michela Negro · 2025 · Monthly Notices of the Royal Astronomical Society
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Abstract
ABSTRACT Gamma-ray bursts are the most luminous electromagnetic events in the Universe. Their prompt gamma-ray emission has typical durations between a fraction of a second and several minutes. A rare subset of these events have durations in excess of a thousand seconds, referred to as ultra-long gamma-ray bursts. Here, we report the discovery of the longest gamma-ray burst ever seen with a $\sim$25 000 s gamma-ray duration, GRB 250702B, and characterize this event using data from four instruments in the InterPlanetary Network and the Monitor of All-sky X-ray Image. We find a hard spectrum, su
Abstract by Eliza Neights; Eric Burns; Chris L. Fryer; D. Svinkin; Suman Bala; R. Hamburg; Ramandeep Gill; Michela Negro, Monthly Notices of the Royal Astronomical Society (2025) — licensed CC BY 4.0.
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Metadata source: OpenAlex · DOI 10.1093/mnras/staf2019