513 citations · 1.9k across the 13 of their papers we have counts for
13 papers
A millimeter rebrightening in GRB 210702A
Simon de Wet, Tanmoy Laskar, Paul J. Groot +9
We present X-ray to radio frequency observations of the bright long gamma-ray burst GRB 210702A. Our ALMA 97.5 GHz observations show a significant rebrightening by a factor of ~2 b…
Energy Injection in Gamma-ray Burst Afterglows
Tanmoy Laskar, Edo Berger, Raffaella Margutti +4
We present multi-wavelength observations and modeling of Gamma-ray Bursts (GRBs) that exhibit a simultaneous re-brightening in their X-ray and optical light curves, and are also de…
Radio Monitoring of the Tidal Disruption Event Swift J164449.3+573451. I. Jet Energetics and the Pristine Parsec-Scale Environment of a Supermassive Black Hole
E. Berger, A. Zauderer, G. G. Pooley +4
We present continued radio observations of the tidal disruption event SwiftJ164449.3+573451 extending to \sim216 days after discovery. The data are part of a long-term program to m…
Multi-Wavelength Observations of GRB 050820A: An Exceptionally Energetic Event Followed from Start to Finish
S. B. Cenko, M. Kasliwal, F. A. Harrison +25
We present observations of the unusually bright and long gamma-ray burst GRB 050820A, one of the best-sampled broadband data sets in the Swift era. The gamma-ray light curve is mar…
Relativistic ejecta from XRF 060218 and the rate of cosmic explosions
A. M. Soderberg, S. R. Kulkarni, E. Nakar +22
Over the last decade, long-duration gamma-ray bursts (GRBs) including the subclass of X-ray flashes (XRFs) have been revealed to be a rare variety of Type Ibc supernova (SN). While…
A Common Origin for Cosmic Explosions Inferred from Fireball Calorimetry
E. Berger, S. R. Kulkarni, G. Pooley +8
Past studies suggest that long-duration gamma-ray bursts (GRBs) have a standard energy of E_gamma ~ 10^51 erg in ultra-relativistic ejecta when corrected for asymmetry ("jets"). Ho…
A Study of the Afterglows of Four GRBs: Constraining the Explosion and Fireball Model
S. A. Yost, F. A. Harrison, R. Sari +1
We employ a fireball model of the GRB explosion to constrain intrinsic and environmental parameters of four events with good broadband afterglow data; GRB970508, GRB980329, GRB9807…
Optical Spectropolarimetry of the GRB 020813 Afterglow
A. J. Barth, R. Sari, M. H. Cohen +6
The optical afterglow of gamma-ray burst 020813 was observed for 3 hours with the LRIS spectropolarimeter at the Keck-I telescope, beginning 4.7 hours after the burst was detected…
Broad-band Modeling of GRB Afterglows
E. Berger, R. Sari, D. A. Frail +1
Observations of GRB afterglows ranging from radio to X-ray frequencies generate large data sets. Careful analysis of these broad-band data can give us insight into the nature of th…
The Radio Afterglow and the Host Galaxy of the X-Ray Rich GRB 981226
D. A. Frail, S. R. Kulkarni, J. S. Bloom +9
We report the discovery of a radio transient VLA 232937.2-235553, coincident with the proposed X-ray afterglow for the gamma-ray burst GRB 981226. This GRB has the highest ratio of…
Optical and Radio Observations of the Afterglow from GRB990510: Evidence for a Jet
F. A. Harrison, J. S. Bloom, D. A. Frail +16
We present multi-color optical and two-frequency radio observations of the bright SAX event, GRB 990510. The well-sampled optical decay, together with the radio observations are in…
Images, Light Curves and Spectra of GRB Afterglow
Jonathan Granot, Tsvi Piran, Re'em Sari
We calculate the light curve and spectra near the peak and the self absorption break, for an adiabatic blast wave described by the Blandford-McKee solution, considering the emissio…
Implications of the Visible and X-Ray Counterparts to GRB970228
J. I. Katz, T. Piran, R. Sari
The gamma-ray burst source GRB970228 has been observed after a delay of 8--12 hours in X-rays and after one day in visible and near infrared light. This marks the first detection o…