gamma-ray bursts

Real-time Transient Classification Pipeline

The Transients Classification Pipeline (TCP) is a Berkeley-led project which federates data streams from multiple surveys and observatories, classifies with machine learning and astronomer defined science priors, and broadcasts sources of interest to …

Resolving The ISM Surrounding GRBs with Afterglow Spectroscopy

We review current research related to spectroscopy of gamma-ray burst (GRB) after-glows with particular emphasis on the interstellar medium (ISM) of the galaxies hosting these high redshift events. These studies reveal the physical conditions of …

Unraveling the dynamics and kinematics of GRB hosts with high resolution spectroscopy

In the last years the research on GRB host galaxies has proceeded to more detailed studies both using high resolution afterglow spectroscopy and spatially resolved spectra of nearby hosts. High resolution spectra give a detailed picture of the …

XRF 060428B: Observational evidence for a strongly lensed burst

Long-duration GRBs and X-ray flashes (XRFs softer-spectrum brethren of long GRBs) are thought to occur following the core-collapse of massive stars. We report here on observations of a recent X-ray flash (XRF 060428B) that occurred 2.6$^″$ in …

Constraints on the Diverse Progenitors of GRBs from the Large-Scale Environments

The pursuit of the progenitors of short duration-hard spectrum gamma-ray bursts (SHBs) draws strongly upon similar quests for the origin of supernovae (SNe) and long duration-soft spectrum GRBs (LSBs). Indeed the notion that, in the absence of …

Rapidly Detecting Extincted Bursts with KAIT and PAIRITEL

Ground-based robotic telescopes have proven essential in the first 6 months of Swift operation. The robotic optical 0.7m Katzman Automatic Imaging Telescope (KAIT) and the robotic infra-red 1.3m Peters Automated Infrared Imaging Telescope (PAIRITEL) …

Energetics and the GRB Hubble Diagram

The energy release in prompt γ- and X-rays is a fundamental parameter in the study of the explosion mechanism and the central engines of GRBs. Though the apparent standardizability of GRB energetics have lead some to suggest that GRBs might be useful …

The afterglows of gamma-ray bursts

Gamma-ray burst astronomy has undergone a revolution in the last three years, spurred by the discovery of fading long-wavelength counterparts. We now know that at least the long duration GRBs lie at cosmological distances with estimated …

The afterglows of gamma-ray bursts

Gamma-ray burst astronomy has undergone a revolution in the last three years, spurred by the discovery of fading long-wavelength counterparts. We now know that at least the long-duration GRBs lie at cosmological distances with estimated …

The afterglows of gamma-ray bursts

Gamma-ray burst astronomy has undergone a revolution in the last three years, spurred by the discovery of fading long-wavelength counterparts. We now know that at least the long duration GRBs lie at cosmological distances with estimated …