AWhat changed
Fermi’s Gamma-ray Burst Monitor triggered on GRB 170817A, a weak gamma-ray transient following the GW170817 inspiral by roughly 1.7 seconds. Its time and sky position supported a joint gravitational-wave and electromagnetic association; the GBM team measured the burst duration and spectrum, finding properties more consistent with a short gamma-ray burst in their population model.
Scientific scope
Fermi’s Gamma-ray Burst Monitor triggered on GRB 170817A, a weak gamma-ray transient following the GW170817 inspiral by roughly 1.7 seconds. Its time and sky position supported a joint gravitational-wave and electromagnetic association; the GBM team measured the burst duration and spectrum, finding properties more consistent with a short gamma-ray burst in their population model. The association and binary-neutron-star interpretation combine observations from separate teams. The quoted 4.82-sigma onboard value is for one detector, interval and energy band, not the full joint significance. Estimated T90 of 2.0 ± 0.5 s and short-class probability depend on energy band, background, detector response and the two-population model. The soft tail, possible thermal spectrum and cocoon explanation are not uniquely established. INTEGRAL detection is cited but its independent original paper was not reviewed here; raw data and the companion gravity-speed analysis were not reanalyzed.
Evidence
The linked original works support the scoped statement and contribution attribution. WRS has not independently replayed experiments or reconstructed a full mathematical proof. The association and binary-neutron-star interpretation combine observations from separate teams. The quoted 4.82-sigma onboard value is for one detector, interval and energy band, not the full joint significance. Estimated T90 of 2.0 ± 0.5 s and short-class probability depend on energy band, background, detector response and the two-population model. The soft tail, possible thermal spectrum and cocoon explanation are not uniquely established. INTEGRAL detection is cited but its independent original paper was not reviewed here; raw data and the companion gravity-speed analysis were not reanalyzed.
Contributors
- The named authors in the research record · SCIENCE: These are the listed authors of the cited contribution sources. Paper authorship does not quantify individual effort. An incomplete list is explicitly marked; same names are not automatically merged.
Provisional WRS assessment, edition 2026-10-28.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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