The Cosmic Gamma-Ray Bursts and Their Host Galaxies in a Cosmological Context (2003)
Djorgovski, S. G., Kulkarni, S. R., Frail, D. A., Harrison, F. A., Bloom, J. S., Berger, E., ...
Studies of the cosmic gamma-ray bursts (GRBs) and their host galaxies are now starting to provide interesting or even unique new insights in observational cosmology. Observed GRB host galaxies have a...
Hubble Space Telescope and Ground-Based Optical and Ultraviolet Observations of GRB010222 (2003)
Galama, T. J., Reichart, D., Brown, T. M., Kimble, R. A., Price, P. A., Berger, E., ...
We report on Hubble Space Telescope WFPC2 optical and STIS near ultraviolet MAMA observations, and ground-based optical observations of GRB010222, spanning 15 hrs to 71 days. The observations are...
Continued Radio Monitoring of the Gamma Ray Burst 991208 (2002)
Galama, T. J., Frail, D. A., Sari, R., Berger, E., Taylor, G. B., Kulkarni, S. R.
We present radio observations of the afterglow of the bright gamma-ray burst GRB 991208 at frequencies of 1.4, 4.9 and 8.5 GHz, taken between two weeks and 300 days after the burst. The well-sampled...
Discovery of GRB 020405 and its Late Red Bump (2002)
Price, P. A., Kulkarni, S. R., Berger, E., Fox, D. W., Bloom, J. S., Djorgovski, S. G., ...
We present the discovery of GRB 020405 made with the Inter-Planetary Network (IPN). With a duration of 60 s, the burst appears to be a typical long duration event. We observed the 75-square acrminute...
Berger, E., Kulkarni, S. R., Bloom, J. S., Price, P. A., Fox, D. W., Frail, D. A., ...
We present ground-based optical observations of GRB 020124 starting 1.6 hours after the burst, as well as subsequent Very Large Array (VLA) and Hubble Space Telescope (HST) observations. The optical...
GRB 010921: Strong Limits on an Underlying Supernova from HST (2002)
Price, P. A., Kulkarni, S. R., Schmidt, B. P., Galama, T. J., Bloom, J. S., Berger, E., ...
GRB 010921 was the first HETE-2 GRB to be localized via its afterglow emission. The low-redshift of the host galaxy, z=0.451, prompted us to undertake intensive multi-color observations with the...
Time-Dependent Optical Spectroscopy of GRB 010222: Clues to the GRB Environment (2002)
Mirabal, N., Halpern, J. P., Kulkarni, S. R., Castro, S., Bloom, J. S., Djorgovski, S. G., ...
We present sequential optical spectra of the afterglow of GRB 010222 obtained one day apart using the Low Resolution Imaging Spectrometer (LRIS) and the Echellette Spectrograph and Imager (ESI) on...
The Broadband Afterglow of GRB980329 (2002)
Yost, S. A., Frail, D. A., Harrison, F. A., Sari, R., Reichart, D., Bloom, J. S., ...
We present radio observations of the afterglow of the bright gamma-ray burst GRB980329 made between one month and several years after the burst, a re-analysis of previously published submillimeter...
GRB 011121: A Massive Star Progenitor (2002)
Price, P. A., Berger, E., Reichart, D. E., Kulkarni, S. R., Subrahmanyan, R., Wark, R. M., ...
Of the cosmological gamma-ray bursts, GRB 011121 has the lowest redshift, z=0.36. More importantly, the multi-color excess in the afterglow detected in the Hubble Space Telescope (HST) light curves...
Detection of a supernova signature associated with GRB 011121 (2002)
Bloom, J. S., Kulkarni, S. R., Price, P. A., Reichart, D., Galama, T. J., Schmidt, B. P., ...
Using observations from an extensive monitoring campaign with the Hubble Space Telescope we present the detection of an intermediate-time flux excess which is redder in color relative to the...
GRB 010222 : a burst within a starburst (2002)
Frail, D. A., Bertoldi, F., Moriarty-Schieven, G. H., Berger, E., Price, P. A., Bloom, J. S., ...
We present millimeter- and submillimeter-wavelength observations and near-infrared K-band imaging toward the bright gamma-ray burst GRB 010222. Over seven different epochs, a constant source was...
Keck Spectroscopy and HST Imaging of GRB 000926: Probing a Host Galaxy at z = 2. 038 (2001)
Castro, S., Galama, T. J., Harrison, F. A., Holtzman, J. A., Bloom, J. S., Djorgovski, S. G., ...
We present early-time Keck spectroscopic observations and late-time Hubble Space Telescope (HST) imaging of GRB 000926. The HST images show a small offset between the optical transient and the...
The Unusually Long Duration Gamma-ray Burst GRB 000911 (2001)
Price, P. A., Berger, E., Kulkarni, S. R., Djorgovski, S. G., Fox, D. W., Mahabal, A., ...
Of all the well localized gamma-ray bursts, GRB 000911 has the longest duration (T_90 ~ 500 s), and ranks in the top 1% of BATSE bursts for fluence. Here, we report the discovery of the afterglow of...
GRB 010222: A Burst Within a Starburst (2001)
Frail, D. A., Bertoldi, F., Moriarty-Schieven, G. H., Berger, E., Price, P. A., Bloom, J. S., ...
We present millimeter and submillimeter wavelength observations and near-infrared K-band imaging toward the bright gamma-ray burst GRB 010222. Over seven epochs the flux density of the source was...
The GRB Host Galaxies and Redshifts (2001)
Djorgovski, S. G., Kulkarni, S. R., Bloom, J. S., Frail, D. A., Harrison, F. A., Galama, T. J., ...
Observations of GRB host galaxies and their environments in general can provide valuable clues about the nature of progenitors. Bursts are associated with faint, ~ 25 mag, galaxies at cosmological...
The Cosmic Gamma-Ray Bursts (2001)
Djorgovski, S. G., Frail, D. A., Kulkarni, S. R., Sari, R., Bloom, J. S., Galama, T. J., ...
Cosmic gamma-ray bursts are one of the great frontiers of astrophysics today. They are a playground of relativists and observers alike. They may teach us about the death of stars and the birth of...
The afterglows of gamma-ray bursts (2001)
Kulkarni, S. R., Berger, E., Bloom, J. S., Chaffee, F., Diercks, A., Djorgovski, S. G., ...
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...
Beaming in Gamma-Ray Bursts: Evidence for a Standard Energy Reservoir (2001)
Frail, D. A., Kulkarni, S. R., Sari, R., Djorgovski, S. G., Bloom, J. S., Galama, T. J., ...
Gamma-ray bursts (GRBs) are the most brilliant objects in the Universe but efforts to estimate the total energy released in the explosion -- a crucial physical quantity -- have been stymied by their...
We analyze a complete sample of gamma-ray burst afterglows and find X-ray evidence for high column densities of gas around them. The column densities are in the range 1022-1023 cm-2, which is right...
GRB 990712: First Indication of Polarization Variability in a Gamma-Ray Burst Afterglow (2001)
Rol, E., Vreeswijk, P.M., Kaper, L., Galama, T.J., Paradijs, J.A. Van, ...
We report the detection of significant polarization in the optical afterglow of GRB 990712 on three instances: 0.44, 0.70, and 1.45 days after the gamma-ray burst, with (P, theta) being (2.9%+/-0.4%,...
The first year of optical-IR observations of SN1998bw (2001)
Danziger, I.J., Augusteijn, T., Brewer, J., Cappellaro, E., Doublier, V., Galama, T.J., ...
The Metamorphosis of SN 1998bw (2001)
Patat, F., Cappellaro, E., Danziger, I.J., Mazzali, P., Sollerman, J., Augusteijn, T., ...
Multi-Color Observations of the GRB000926 Afterglow (2000)
Price, P. A., Harrison, F. A., Galama, T. J., Reichart, D. E., Axelrod, T. S., Berger, E. J., ...
We present multi-color light-curves of the optical afterglow of GRB 000926. Beginning ~1.5 days after the burst, the light-curves of this GRB steepen measurably. The existence of such achromatic...
The afterglows of gamma-ray bursts (2000)
Kulkarni, S. R., Berger, E., Bloom, J. S., Chaffee, F., Diercks, A., Djorgovski, S. G., ...
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...
Vreeswijk, P. M., Fruchter, A., Kaper, L., Rol, E., Galama, T. J., Van Paradijs, J., ...
We present time-resolved optical spectroscopy of the afterglows of the gamma-ray bursts GRB 990510 and GRB 990712. Through the identification of several absorption lines in the first epoch GRB 990510...
GRB990712: First Indication of Polarization Variability in a Gamma-ray Burst Afterglow (2000)
Rol, E., Vreeswijk, P. M., Kaper, L., Galama, T. J., Van Paradijs, J., ...
We report the detection of significant polarization in the optical afterglow of GRB990712 on three instances 0.44, 0.70 and 1.45 days after the gamma-ray burst, with (P, theta) being (2.9% +- 0.4%,...
The afterglows of gamma-ray bursts (2000)
Kulkarni, S. R., Berger, E., Bloom, J. S., Chaffee, F., Diercks, A., Djorgovski, S. G., ...
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...
Galama, T. J., Bremer, M., Bertoldi, F., Menten, K. M., Lisenfeld, U., Shepherd, D. S., ...
The millimeter wavelength emission from GRB 991208 is the second brightest ever detected, yielding a unique data set. We present here well-sampled spectra and light curves over more than two decades...
A Jet Model for the Afterglow Emission from GRB000301C (2000)
Berger, E., Sari, R., Frail, D. A., Kulkarni, S. R., Bertoldi, F., Peck, A., ...
We present broad-band radio observations of the afterglow of GRB000301C, spanning from 1.4 to 350 GHz for the period of 3 to 83 days after the burst. This radio data, in addition to measurements at...
The afterglows of gamma-ray bursts (2000)
Kulkarni, S. R., Berger, E., Bloom, J. S., Chaffee, F., Diercks, A., Djorgovski, S. G., ...
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...
Spectral Evolution of the Peculiar Ic Supernova 1998bw (2000)
Stathakis, R. A., Boyle, B. J., Jones, D. H., Bessell, M. S., Galama, T. J., Germany, Lisa M., ...
SN 1998bw holds the record for the most energetic Type Ic explosion, one of the brightest radio supenovae and probably the first supernova associated with a gamma-ray burst. In this paper we present...
The Unique Potential of SKA Radio Observations of Gamma-Ray Bursts (2000)
Galama, T. J., De Bruyn, A. G.
Radio observations with the Square Kilometer Array (SKA) provide the agility, sensitivity, and spectral coverage to trace the evolution of the size, shape and spectra of gamma-ray burst (GRB)...
Submillimeter Observations of GRB Counterparts (2000)
Smith, I.A., Paradijs, J. Van, Tilanus, R.P.J., Galama, T.J., Groot, P.J., Vreeswijk, P., ...
The first year of optical-IR observations of SNI 1998bw (2000)
Danziger, I.J., Augusteijn, T., Brewer, J., Cappellaro, E., Doublier, V., Galama, T.J., ...
Ultraviolet spectra of GRB': potential with STIS (2000)
Smette, A., Gull, T.R., Lindler, D., Plait, P., Kimble, R., Fruchter, A.S., ...
Spectral evolution of the peculiar Ic Supernova 1998bw (2000)
Stathakis, R.A., Boyle, B.J., Jones, D.H., Bessel, M.S., Galama, T.J., Germany, L.M., ...
Near-infrared detection and optical follow-up of the GRB 990705 afterglow (2000)
Masetti, N., Palazzi, E., Pian, E., Hunt, L.K., Mendez, R.M., Frontera, F., ...
Discovery of the optical counterpart and early optical observations of GRB 990712 (2000)
Sahu, K.C., Vreeswijk, P.M., Bakos, G., Menzies, J.W., Bragaglia, A., Frontera, F., ...
Vreeswijk, P.M., Fruchter, A., Kaper, L., Rol, E., Galama, T.J., Paradijs, J.A. Van, ...
We present time-resolved optical spectroscopy of the afterglows of the gamma-ray bursts GRB 990510 and GRB 990712. Through the identification of several absorption lines in the first-epoch GRB 990510...
Evidence for a Supernova in reanalyzed optical and near-infrared images of GRB 970228 (2000)
Galama, T.J., Tanvir, N., Vreeswijk, P.M., Groot, P.J., Rol, E., ...
We present B-, V-, RC-, IC-, J-, H-, K-, and K'-band observations of the optical transient (OT) associated with GRB 970228, based on a reanalysis of previously used images and unpublished data. In...
ISO detection of a 60 mu m source near GRB 970508 (2000)
Hanlon, L., Laureijs, R.J., Metcalfe, L., McBreen, B., Altieri, B., Castro-Tirado, A.J., ...
VLT observations of GRB 990510 and its environment (1999)
Beuermann, K., Hessman, F. V., Reinsch, K., Nicklas, H., Vreeswijk, P. M., Galama, T. J., ...
We present BVRI photometry and spectrophotometry of GRB990510 obtained with the ESO VLT/Antu telescope during the late decline phase. Between days 8 and 29 after the burst, the afterglow faded from...
Evidence for a supernova in reanalyzed optical and near-infrared images of GRB970228 (1999)
Galama, T. J., Tanvir, N., Vreeswijk, P. M., Groot, P. J., Rol, E., ...
We present B-, V-, R_c-, I_c-, J-, H-, K- and K'-band observations of the optical transient (OT) associated with GRB970228, based on a reanalysis of previously used images and unpublished data. In...
Vreeswijk, P. M., Galama, T. J., Rol, E., Van Paradijs, J., Kouveliotou, C., ...
Following a BeppoSAX alert (Piro 1999a) and the discovery of the OT at SAAO (Vreeswijk et al. 1999a), we observed GRB 990510 with the FORS instrument on ESO's VLT Unit 1 (`Antu'). The burst is...
The X-ray, Optical and Infrared Counterpart to GRB 980703 (1999)
Vreeswijk, P. M., Galama, T. J., Owens, A., Oosterbroek, T., Geballe, T. R., Van Paradijs, J., ...
We report on X-ray, optical and infrared follow-up observations of GRB 980703. We detect a previously unknown X-ray source in the GRB error box; assuming a power law decline we find for its decay...
Galama, T.J., Briggs, M.S., Bhattacharya, D., Et Al.
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Spectral Energy Distributions and Light Curves of GRB 990123 and its Afterglow (1999)
Galama, T. J., Briggs, M. S., Vreeswijk, P. M., Rol, E., Band, D., ...
Gamma-ray bursts (GRBs) are thought to result from the interaction of an extremely relativistic outflow interacting with a small amount of material surrounding the site of the explosion....
The X-Ray, optical, and infrared counterpart to GRB 980703 (1999)
Vreeswijk, P.M., Galama, T.J., Owens, A., Oosterbroek, T., Geballe, T.R., Paradijs, J. Van, ...
We report on X-ray, optical, and infrared follow-up observations of GRB 980703. We detect a previously unknown X-ray source in the GRB error box; assuming a power-law decline, we find for its decay...
Physical rarameters of GRB 970508 and GRB 971214 from their afterglow synchrotron emission (1999)
We have calculated synchrotron spectra of relativistic blast waves and find predicted characteristic frequencies that are more than an order of magnitude different from previous calculations. For the...
Unusual increase in the 325 MHz flux density of PSR B0655+64 (1999)
Galama, T.J., Paradijs, J.A. Van, Bruyn, A.G. De, Hanlon, L., Bennet, K.
Detection of polarization in the afterglow of GRB 990510 with the ESO Very Large Telescope (1999)
Vreeswijk, P.M., Galama, T.J., Rol, E., Paradijs, J.A. Van, Kouveliotou, C., ...
Following a BeppoSAX alert and the discovery of the OT at SAAO, we observed GRB 990510 with the FORS instrument on ESO's VLT Unit 1 (Antu). The burst is unremarkable in gamma rays, but in optical is...
The x-ray, optical and infrared counterpart to GRB 980703 (1999)
Vreeswijk, P.M., Galama, T.J., Owens, A.N., Oosterbroek, T., Geballe, T.R., Paradijs, J.A. Van, ...
On the possible association of SN 1998bw and GRB 980425 (1999)
Galama, T.J., Vreeswijk, P.M., Paradijs, J.A. Van, Kouveliotou, C., Augusteijn, T., Patat, F., ...
We here discuss the possibility that the peculiar supernova SN 1998bw and the Gamma-Ray Burst GRB 980425 are associated. If the two are related, the energy radiated in gamma rays is at least four...
Broad-band spectral evolution of GRB afterglows (1999)
Masetti, N., Pian, E., Palazzi, E., Amati, L., Galama, T.J., Nicastro, L., ...
Physical parameters of GRB 970508 from its afterglow synchrotron emission (1999)
Galama, T.J., Vreeswijk, P.M., Groot, P.J., Paradijs, J.A. Van, Kouveliotou, C., ...
For the case of an adiabatically expanding blast wave, which is applicable to observed gamma-ray burst (GRB) afterglows at late times, we give expressions to infer the physical properties of the...
The x-ray, optical and infrared counterpart to GRB 980703 (1999)
Vreeswijk, P.M., Galama, T.J., Owens, A.N., Oosterbroek, T., Geballe, T.R., Paradijs, J.A. Van, ...
VLT observations of GRB 990510 and its environment (1999)
Beuermann, K., Hessman, F.V., Reinsch, K., Nicklas, H., Vreeswijk, P.M., Galama, T.J., ...
Smith, I.A., Tilanus, R.P.J., Paradijs, J.A. Van, Galama, T.J., Groot, P.J., Vreeswijk, P.M., ...
We discuss our ongoing program of Target of Opportunity observations of gamma-ray bursts (GRBs) using the SCUBA instrument on the James Clerk Maxwell Telescope. We present observations of GRB 970508,...