We have gathered optical photometry data from the literature on a large sample of Swift-era
gamma-ray burst (GRB) afterglows including GRBs up to 2009 September, for a total of 76 …

The Neil Gehrels Swift Observatory (Swift) has been in operation for 18 years. The Ultra-
Violet/Optical Telescope (UVOT) onboard Swift was designed to capture the earliest …

Since the successful launch of NASA's dedicated gamma-ray burst (GRB) mission, Swift, the
study of cosmological GRBs has entered a new era. Here I review the rapid observational …

We systematically analyze the prompt emission and the early afterglow data of a sample of
31 GRBs detected by Swift before 2005 September and estimate the GRB radiative …

Context. Gamma-ray burst (GRB) emission is believed to originate in highly relativistic
fireballs. Aims. Currently, only lower limits were securely set to the initial fireball Lorentz …

We present optical and near-infrared photometry of the afterglow of the long gamma-ray
burst (GRB) 070802 at redshift 2.45 obtained with the ESO/MPI 2.2 m telescope equipped …

Gamma-ray bursts (GRBs) are one of the candidates of ultrahigh-energy (≳ 10 18.5 eV)
cosmic-ray (UHECR) sources. We investigate high-energy cosmic-ray acceleration including …

We present the first Swift Ultraviolet/Optical Telescope (UVOT) gamma-ray burst (GRB)
afterglow catalog. The catalog contains data from over 64,000 independent UVOT image …

The high energy neutrino emission from gamma-ray bursts (GRBs) has been expected in
various scenarios. In this paper, we study the neutrino emission from early afterglows of …

Correlation studies of prompt and afterglow emission from gamma-ray bursts (GRBs)
between different spectral bands have been difficult to do in the past because few bursts had …