22 papers · 1 filter
Taxonomy of GRB optical light-curves: identification of a salient class of early afterglows
A. Panaitescu, W. T. Vestrand
The temporal behaviour of the early optical emission from Gamma-Ray Burst afterglows can be divided in four classes: fast-rising with an early peak, slow-rising with a late peak, f…
The Dark Side of ROTSE-III Prompt GRB Observations
S. A. Yost, F. Aharonian, C. W. Akerlof +22
We present several cases of optical observations during gamma-ray bursts (GRBs) which resulted in prompt limits but no detection of optical emission. These limits constrain the pro…
Energy input and response from prompt and early optical afterglow emission in gamma-ray bursts
W. T. Vestrand, J. A. Wren, P. R. Wozniak +8
The taxonomy of optical emission detected during the critical first few minutes after the onset of a gamma-ray burst (GRB) defines two broad classes: prompt optical emission correl…
Mapping stellar kinematics across the Galactic bar: HST measurements of proper motions in 35 fields
S. Kozlowski, P. R. Wozniak, S. Mao +4
We present a proper motion mini-survey of 35 fields in the vicinity of Baade window, (l, b) = (1 deg, -4 deg), sampling roughly a 5 x 2.5 deg region of the Galactic bar. Our second…
RAPTOR observations of delayed explosive activity in the high-redshift gamma-ray burst GRB 060206
P. R. Wozniak, W. T. Vestrand, J. A. Wren +3
The RAPid Telescopes for Optical Response (RAPTOR) system at Los Alamos National Laboratory observed GRB 060206 starting 48.1 minutes after gamma-ray emission triggered the Burst A…
Early-Time Observations of the GRB 050319 Optical Transient
R. M. Quimby, E. S. Rykoff, S. A. Yost +18
We present the unfiltered ROTSE-III light curve of the optical transient associated with GRB 050319 beginning 4 s after the cessation of gamma-ray activity. We fit a power-law func…