On 9 October 2022, the Large High Altitude Air Shower Observatory (LHAASO) reported the observation of the very early TeV afterglow of the brightest-of-all-time gamma-ray burst 221009A, recording the highest photon statistics in the TeV band ever obtained from a gamma-ray burst. We use this unique observation to place stringent constraints on the energy dependence of the speed of light in vacuum, a manifestation of Lorentz invariance violation (LIV) predicted by some quantum gravity (QG) theories. Our results show that the 95% confidence level lower limits on the QG energy scales are EQG,1>10 times the Planck energy EPl for the linear LIV effect, and EQG,2>6×10−8EPl for the quadratic LIV effect. Our limits on the quadratic LIV case improve previous best bounds by factors of 5–7.Received 8 February 2024Revised 21 May 2024Accepted 27 June 2024DOI:https://doi.org/10.1103/PhysRevLett.133.071501© 2024 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasGamma ray burstsGravitationQuantum gravityGravitation, Cosmology & Astrophysics
No takes yet. Share an insight, caveat, or question.
Cao et al. (2024) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: