Fermi-GBM discovery of GRB 221009A: An extraordinarily bright GRB from onset to afterglow

S Lesage, P Veres, MS Briggs… - The Astrophysical …, 2023 - iopscience.iop.org
We report the discovery of GRB 221009A, the highest flux gamma-ray burst (GRB) ever
observed by the Fermi Gamma-ray Burst Monitor (Fermi-GBM). This GRB has continuous …

GRB polarization: a unique probe of GRB physics

R Gill, M Kole, J Granot - Galaxies, 2021 - mdpi.com
Over half a century from the discovery of gamma-ray bursts (GRBs), the dominant radiation
mechanism responsible for their bright and highly variable prompt emission remains poorly …

Grb 221009a: the boat

E Burns, D Svinkin, E Fenimore, DA Kann… - The Astrophysical …, 2023 - iopscience.iop.org
GRB 221009A has been referred to as the brightest of all time (BOAT). We investigate the
veracity of this statement by comparing it with a half century of prompt gamma-ray burst …

The first JWST spectrum of a GRB afterglow: no bright supernova in observations of the brightest GRB of all time, GRB 221009A

AJ Levan, GP Lamb, B Schneider… - The Astrophysical …, 2023 - iopscience.iop.org
Abstract We present James Webb Space Telescope (JWST) and Hubble Space Telescope
(HST) observations of the afterglow of GRB 221009A, the brightest gamma-ray burst (GRB) …

The GRB Prompt Emission: An Unsolved Puzzle

Ž Bošnjak, R Barniol Duran, A Pe'er - Galaxies, 2022 - mdpi.com
The recent multi-messenger and multi-wavelength observations of gamma-ray bursts
(GRBs) have encouraged renewed interest in these energetic events. In spite of the …

Cosmological fast optical transients with the Zwicky Transient Facility: a search for dirty fireballs

AYQ Ho, DA Perley, Y Yao, D Svinkin… - The Astrophysical …, 2022 - iopscience.iop.org
Dirty fireballs are a hypothesized class of relativistic massive-star explosions with an initial
Lorentz factor Γ init below the Γ init∼ 100 required to produce a long-duration gamma-ray …

Unpacking merger jets: a Bayesian analysis of GW170817, GW190425 and electromagnetic observations of short gamma-ray bursts

F Hayes, IS Heng, G Lamb, ET Lin… - The Astrophysical …, 2023 - iopscience.iop.org
We present a novel fully Bayesian analysis to constrain short gamma-ray burst (sGRB) jet
structures associated with cocoon, wide-angle, and simple top-hat jet models, as well as the …

A short gamma-ray burst from a protomagnetar remnant

N Jordana-Mitjans, CG Mundell… - The Astrophysical …, 2022 - iopscience.iop.org
The contemporaneous detection of gravitational waves and gamma rays from
GW170817/GRB 170817A, followed by kilonova emission a day after, confirmed compact …

Multicollision Internal Shock Lepto-hadronic Models for Energetic Gamma-Ray Bursts (GRBs)

A Rudolph, M Petropoulou, Ž Bošnjak… - The Astrophysical …, 2023 - iopscience.iop.org
For a subpopulation of energetic gamma-ray bursts (GRBs), a moderate baryonic loading
may suffice to power ultra-high-energy cosmic rays (UHECRs). Motivated by this, we study …

The ultra-long GRB 220627A at z= 3.08

S De Wet, L Izzo, PJ Groot, S Bisero, V d'Elia… - Astronomy & …, 2023 - aanda.org
Context. GRB 220627A is a rare burst with two distinct γ-ray emission episodes separated
by almost 1000 s that triggered the Fermi Gamma-ray Burst Monitor twice. High-energy GeV …