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 …

We present broadband (radio, optical, and X-ray) light curves and spectra of the afterglows
of four long-duration gamma-ray bursts (GRBs; GRBs 090323, 090328, 090902B, and …

We present a powerful new tool for fitting broadband gamma-ray burst afterglow data, which
can be used to determine the burst explosion parameters and the synchrotron radiation …

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

Long-duration gamma-ray bursts (GRBs) are an extremely rare outcome of the collapse of
massive stars and are typically found in the distant universe. Because of its intrinsic …

We discuss jet dynamics for narrow and wide gamma-ray burst (GRB) afterglow jets and the
observational implications of numerical simulations of relativistic jets in two dimensions. We …

The dynamics of gamma-ray burst jets during the afterglow phase have an important effect
on the interpretation of their observations and for inferring key physical parameters such as …

We present ZTF20aajnksq (AT 2020blt), a fast-fading (Δr= 2.3 mag in Δt= 1.3 days) red (g−
r≈ 0.6 mag) and luminous (M 1626 Å=− 25.9 mag) optical transient at z= 2.9 discovered by …

We present results for a large number of gamma-ray burst (GRB) afterglow light curve
calculations, done by combining high-resolution two-dimensional relativistic hydrodynamics …

Radio observations play a key role in studying the jets that power GRBs, the most luminous
cosmic explosions. They are crucial for determining the GRB jet energy, the external density …