Observations show that at least some gamma-ray bursts (GRBs) happen simultaneously
with core-collapse supernovae (SNe), thus linking by a common thread nature's two …

Observations of the high-redshift Universe with the 21cm hyperfine line of neutral hydrogen
promise to open an entirely new window onto the early phases of cosmic structure formation …

Observations of individual massive stars, super-luminous supernovae, gamma-ray bursts,
and gravitational wave events involving spectacular black hole mergers indicate that the low …

When massive stars exhaust their fuel, they collapse and often produce the extraordinarily
bright explosions known as core-collapse supernovae. On occasion, this stellar collapse …

With its rapid-response capability and multiwavelength complement of instruments, the Swift
satellite has transformed our physical understanding of γ-ray bursts (GRBs). Providing high …

We present data and initial results from VLT/X-Shooter emission-line spectroscopy of 96
galaxies selected by long γ-ray bursts (GRBs) at 0.1< z< 3.6, the largest sample of GRB host …

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 …

We present a sample of 77 optical afterglows (OAs) of Swift detected gamma-ray bursts
(GRBs) for which spectroscopic follow-up observations have been secured. Our first …

The gamma-ray burst (GRB) 050904 at provides the first opportunity to probe the
intergalactic medium (IGM) by GRBs at the epoch of reionization. Here, we present a …

We present the results of a search for damped Lyman-α (DLA) systems in the Sloan Digital
Sky Survey II (SDSS), Data Release 7. We use a fully automatic procedure to identify DLAs …