72 citations · 108 across the 12 of their papers we have counts for
12 papers · 1 filter
The ultra-fast afterglow of GRB 260226A
Biswajit Banerjee, Alessio Mei, Annarita Ierardi +13
Long-duration gamma-ray bursts are typically powered by relativistic jets launched after the core collapse of some rapidly rotating massive stars. Internal dissipation releases par…
Multiwavelength properties of short gamma ray bursts with extended emission observed by Swift
M. M. Dinatolo, A. Mei, R. Brivio +11
Short gamma-ray bursts with extended emission (SGRBEEs) are a particular class of long GRBs (LGRBs) which, despite their duration, share several observational features with short G…
MeV absorption in gamma-ray bursts as a probe of their progenitor environments
Gor Oganesyan, Om Sharan Salafia, Emanuele Sobacchi +8
A small fraction of X-ray photons from -ray bursts (GRBs), after escaping the relativistic jet, are scattered by electrons in the circumburst medium. Subsequent photon-photon ab…
Ultra-long MeV transient from a relativistic jet: a tidal disruption event candidate
Gor Oganesyan, Elias Kammoun, Annarita Ierardi +11
On July 2, 2025, the Gamma-ray Burst Monitor (GBM) onboard the Fermi Gamma-ray space telescope detected three short-duration MeV transients with overlapping sky locations. These ev…
Gamma-ray burst prompt emission spectra at high energies
Samanta Macera, Biswajit Banerjee, Alessio Mei +3
Despite more than fifty years of gamma-ray burst (GRB) observations, several questions regarding the origin of the prompt emission, particularly at high energies, remain unresolved…
Gamma-ray burst spectral-luminosity correlations in the synchrotron scenario
Alessio Mei, Gor Oganesyan, Samanta Macera
For over two decades, gamma-ray burst (GRB) prompt emission spectra were modelled with smoothly-broken power laws (Band function), and a positive and tight correlation between the…
Camelidae on BOAT: observation of a second spectral component in GRB 221009A
Biswajit Banerjee, Samanta Macera, Alessio Ludovico De Santis +8
Observing and understanding the origin of the very-high-energy (VHE) spectral component in gamma-ray bursts (GRBs) has been challenging because of the lack of sensitivity in MeV-Ge…
A bright megaelectronvolt emission line in -ray burst GRB 221009A
Maria Edvige Ravasio, Om Sharan Salafia, Gor Oganesyan +13
The highly variable and energetic pulsed emission of a long gamma-ray burst (GRB) is thought to originate from local, rapid dissipation of kinetic or magnetic energy within an ultr…
Neutrino search from γ-ray bursts during the prompt and X-ray afterglow phases using 10 years of IceCube public data
Francesco Lucarelli, Gor Oganesyan, Teresa Montaruli +5
Neutrino emission from gamma-ray bursts (GRBs) has been sought for a long time, and stringent limits on the most accredited GRB emission models have been obtained from IceCube. Mul…
GeV emission from a compact binary merger
Alessio Mei, Biswajit Banerjee, Gor Oganesyan +9
An energetic -ray burst (GRB), GRB 211211A, was observed on 2021 December 11 by the Neil Gehrels Swift Observatory. Despite its long duration, typically associated with burs…
Constrains on the physics of the prompt emission from a distant and energetic gamma-ray burst GRB 220101A
Alessio Mei, Gor Oganesyan, Anastasia Tsvetkova +6
The emission region of -ray bursts (GRBs) is poorly constrained. The uncertainty on the size of the dissipation site spans over 4 orders of magnitude (…
XMM-Newton spectrum of the radio-loud quasar 3C 215: slim accretion disk or SMBH binary?
Alessio Mei, Francesco Tombesi
We want to explore the geometrical structure and mutual interactions of the innermost components of the broad line radio galaxy (BLRG) 3C 215, with particular interest in the accre…