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Direct evidence for preburst stage of gamma-ray burst from GRB 221009A data

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arxiv 2410.12243 v1 pith:3WKEH4LO submitted 2024-10-16 astro-ph.HE

Qing Liu , Hanlin Song , Bo-Qiang Ma This is my paper · ORCID
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keywords gamma-raydataphotonspreburstburstburstsdirectevidence
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Previous research on Lorentz invariance violation in photons from gamma-ray bursts (GRBs) suggested a scenario where multi-GeV photons could be emitted before lower-energy photons at the GRB source frame. This implies the existence of a new preburst phase in addition to the traditionally identified prompt and afterglow stages observed in earlier studies. In this study, we present direct evidence for this novel preburst phase in gamma-ray bursts based on recent observations of GRB 221009A. Our analysis leverages data from the Fermi Gamma-ray Burst Monitor (GBM) and Large Area Telescope (LAT) detectors of the Fermi Gamma-ray Space Telescope (FGST), as well as data from the KM2A detector of the Large High Altitude Air-shower Observatory (LHAASO).

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Monte Carlo simulation of GRB data to test Lorentz-invariance violation

    hep-ph 2025-04 conditional novelty 5.0 of 10

    A combined model with both Lorentz-violation and energy-dependent intrinsic delays recovers simulated parameters across all mock datasets and fits multi-GeV and TeV GRB photons, yielding a subluminal LV scale of about...

  2. Examining Lorentz invariance violation with three remarkable GRB photons

    astro-ph.HE 2025-04 conditional novelty 4.0 of 10

    Adding three extreme GRB photons preserves the fitted Lorentz-violation scale E_LV ~ 3e17 GeV, but only when an energy-dependent intrinsic delay term, itself a fitting construct, absorbs the new TeV photons.

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