4 papers
EXPO: a quantum leap in fast, wide-band X-ray polarimetry for astrophysics
Paolo Soffitta, Sebastien Guillot, Ian Hutchinson +137
The Enhanced X-ray Polarimetry Observatory (EXPO) is a mission concept proposed to ESA as an M8 candidate, with a prospective launch in 2041. Building on the scientific success of…
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…