5 papers
Lorentz-Violating Scenarios for the Highest-Energy Photons from GRB 221009A
Giorgio Galanti, Marco Roncadelli
A photon at from GRB 221009A was detected by the Carpet collaboration in 2022 using a partial data set. Very recently, Carpet has completed its ful…
Detection of Compton scattering in the jet of 3C 84
Ioannis Liodakis, Sudip Chakraborty, Frédéric Marin +77
3C 84 is the brightest cluster galaxy in the Perseus Cluster. It is among the closest radio-loud active galaxies and among the very few that can be detected from low frequency radi…
Gamma Ray Burst GRB 221009A: two distinct hints at once at new physics
Giorgio Galanti, Marco Roncadelli, Giacomo Bonnoli +2
The brightest ever observed gamma ray burst GRB 221009A at redshift was detected on October 9, 2022. Its highest energy photons have been recorded by the LHAASO collabo…
Hint at an axion-like particle from GRB 221009A
Giorgio Galanti, Lara Nava, Marco Roncadelli +2
The detection by the LHAASO Collaboration of the gamma-ray burst GRB 221009A at redshift with energies up to challenges conventional physics. Photo…
GRB multi-TeV detection: Beyond standard physics?
Giorgio Galanti, Lara Nava, Marco Roncadelli +2
The recent detection by LHAASO up to 18 TeV of the gamma ray burst GRB 221009A at redshift challenges standard physics because of the strong absorption due to the extra…