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 …

Abstract GRB 221009A (z= 0.151) is one of the closest known long γ-ray bursts (GRBs). Its
extreme brightness across all electromagnetic wavelengths provides an unprecedented …

We present detailed submillimeter—through centimeter—wave observations of the
extraordinary extragalactic transient AT2018cow. The apparent characteristics—the high …

We present multiwavelength observations of the afterglow of GRB 130427A, the brightest (in
total fluence) gamma-ray burst (GRB) of the past 29 yr. Optical spectroscopy from Gemini …

The deaths of massive stars are sometimes accompanied by the launch of highly relativistic
and collimated jets. If the jet is pointed towards Earth, we observe a 'prompt'gamma-ray burst …

We present the discovery of the radio afterglow and near-infrared (NIR) counterpart of the
Swift short gamma-ray burst (GRB) GRB 200522A, located at a small projected offset of≈ 1 …

Since the launch of the highly successful and ongoing Swift mission, the field of gamma-ray
bursts (GRBs) has undergone a revolution. The arcsecond GRB localizations available …

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 …

The impending era of wide-field radio surveys has the potential to revolutionize our
understanding of astrophysical transients. Here we evaluate the prospects of a wide range …

Gamma-ray burst (GRB) afterglows have been observed across the electromagnetic
spectrum, and physical parameters of GRB jets and their surroundings have been derived …