The Collimation and Energetics of the Brightest Swift Gamma-Ray Bursts (2009)
Cenko, S. B., Frail, D. A., Harrison, F. A., Kulkarni, S. R., Nakar, E., Chandra, P., ...
Long-duration gamma-ray bursts (GRBs) are widely believed to be highly-collimated explosions (opening angle theta ~ 1-10 deg). As a result of this beaming factor, the true energy release from a GRB...
GRB 070201: A possible soft gamma-ray repeater in M31 (2008)
Ofek, E. O., Muno, M., Quimby, R., Kulkarni, S. R., Stiele, H., Pietsch, W., ...
GRB 070201 was a bright, short-duration, hard-spectrum gamma-ray burst detected by the Interplanetary Network. Its error quadrilateral, which has an area of 0.124 deg^2, intersects some prominent...
GRB 070610: a curious galactic transient (2008)
Kasliwal, M. M., Cenko, S. B., Kulkarni, S. R., Cameron, P. B., Nakar, E., Ofek, E. O., ...
GRB 070610 is a typical high-energy event with a duration of 5 s. Yet within the burst localization we detect a highly unusual X-ray and optical transient, Swift J195509.6+261406. We see...
Kann, D. A., Klose, S., Zhang, B., Wilson, A. C., Butler, N. R., Malesani, D., ...
We use a large sample of Gamma-Ray Burst (GRB) afterglow and prompt emission data to compare the optical afterglows (or the lack thereof) of ``short/hard'' Type I GRBs (those that are assumed not to...
An extremely luminous X-ray outburst at the birth of a supernova (2008)
Soderberg, A. M., Berger, E., Page, K. L., Schady, P., Parrent, J., Pooley, D., ...
Massive stars end their short lives in spectacular explosions, supernovae, that synthesize new elements and drive galaxy evolution. Throughout history supernovae were discovered chiefly through their...
An extremely luminous X-ray outburst at the birth of a supernova (2008)
Soderberg, A. M., Berger, E., Page, K. L., Schady, P., Parrent, J., Pooley, D., ...
GRB 070610: a curious galactic transient (2008)
Kasliwal, M. M., Cenko, S. B., Kulkarni, S. R., Cameron, P. B., Nakar, E., Ofek, E. O., ...
GRB 070201: a possible soft gamma-ray repeater in M31 (2008)
Ofek, E. O., Muno, M., Quimby, R., Kulkarni, S. R., Stiele, H., Pietsch, W., ...
An extremely luminous X-ray outburst at the birth of a supernova (2008)
Soderberg, A.M., Berger, E., Page, K.L., Schady, P., Parrent, J., Pooley, D., ...
Massive stars end their short lives in spectacular explosions—supernovae—that synthesize new elements and drive galaxy evolution. Historically, supernovae were discovered mainly through their...
GRB 070201: A possible Soft Gamma Ray Repeater in M31 (2007)
Ofek, E. O., Muno, M., Quimby, R., Kulkarni, S. R., Stiele, H., Pietsch, W., ...
The gamma-ray burst (GRB) 070201 was a bright short-duration hard-spectrum GRB detected by the Inter-Planetary Network (IPN). Its error quadrilateral, which has an area of 0.124 sq. deg, intersects...
Kann, D. A., Klose, S., Zhang, B., Malesani, D., Nakar, E., Wilson, A. C., ...
We have gathered optical photometry data on a large sample of Swift-era gamma-ray burst (GRB) afterglows. We analyzed their light curves and derive spectral energy distributions for the sample with...
GRB070610 : A Curious Galactic Transient (2007)
Kasliwal, M. M., Cenko, S. B., Kulkarni, S. R., Cameron, P. B., Nakar, E., Ofek, E. O., ...
GRB 070610 is a typical high-energy event with a duration of 5s.Yet within the burst localization we detect a highly unusual X-ray and optical transient, SwiftJ195509.6+261406. We see high amplitude...
A New Population of High-Redshift Short-Duration Gamma-Ray Bursts (2007)
Berger, E., Fox, D. B., Price, P. A., Nakar, E., Gal-Yam, A., Holz, D. E., ...
The redshift distribution of the short-duration gamma-ray bursts (GRBs) is a crucial, but currently fragmentary, clue to the nature of their progenitors. Here we present optical observations of nine...
Ofek, E. O., Cenko, S. B., Gal-Yam, A., Fox, D. B., Nakar, E., Rau, A., ...
On 2006 May 5, a four second duration, low energy, ~10^49 erg, Gamma-Ray Burst (GRB) was observed, spatially associated with a z=0.0894 galaxy. Here, we report the discovery of the GRB optical...
The Short-Hard GRB 051103: Observations and Implications for Its Nature (2006)
Ofek, E. O., Kulkarni, S. R., Nakar, E., Cenko, S. B., Cameron, P. B., Frail, D. A., ...
The bright short-hard GRB 051103 was triangulated by the Inter-Planetary Network and found to occur in the direction of the nearby M81/M82 galaxy group. Given its possible local-universe nature, we...
Cenko, S. B., Kasliwal, M., Harrison, F. A., Pal'shin, V., Frail, D. A., Cameron, P. B., ...
We present observations of the unusually bright and long γ-ray burst GRB 050820A, one of the best sampled broadband data sets in the Swift era. The γ-ray light curve is marked by a soft precursor...
A New Population of High Redshift Short-Duration Gamma-Ray Bursts (2006)
Berger, E., Fox, D. B., Price, P. A., Nakar, E., Gal-Yam, A., Holz, D. E., ...
The redshift distribution of the short-duration GRBs is a crucial, but currently fragmentary, clue to the nature of their progenitors. Here we present optical observations of nine short GRBs obtained...
Gehrels, N., Norris, J. P., Mangano, V., Barthelmy, S. D., Burrows, D. N., Granot, J., ...
Gamma ray bursts (GRBs) are known to come in two duration classes, separated at ~2 s. Long bursts originate from star forming regions in galaxies, have accompanying supernovae (SNe) when near enough...
The short-hard GRB 051103: Observations and implications for its nature (2006)
Ofek, E. O., Kulkarni, S. R., Nakar, E., Cenko, S. B., Cameron, P. B., Frail, D. A., ...
The bright short-hard GRB 051103 was triangulated by the inter-planetary network and found to occur in the direction of the nearby M81/M82 galaxy group. Given its possible local-Universe nature, we...
The gamma-ray burst GRB060614 requires a novel explosive process (2006)
Gal-Yam, A., Fox, D., Price, P., Davis, M., Leonard, D., Soderberg, A., ...
Over the past decade our physical understanding of gamma-ray bursts (GRBs) has progressed rapidly thanks to the discovery and observation of their long-lived afterglow emission. Long-duration (T < 2...
Cenko, S. B., Kasliwal, M., Harrison, F. A., Pal'shin, V., Frail, D. A., Cameron, P. B., ...
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 marked by a soft...
An Energetic Afterglow from a Distant Stellar Explosion (2006)
Frail, D. A., Cameron, P. B., Kasliwal, M., Nakar, E., Price, P. A., Berger, E., ...
We present the discovery of radio afterglow emission from the high-redshift (z = 6.295) burst GRB 050904. The peak flux density for this burst is similar to typical low-redshift gamma-ray bursts...
Soderberg, A. M., Nakar, E., Cenko, S. B., Cameron, P. B., Frail, D. A., Kulkarni, S. R., ...
We present detailed optical, near-infrared, and radio observations of the X-ray flash 050416a obtained with Palomar and Siding Springs Observatories as well as HST and the VLA, placing this event...
An Energetic Afterglow From A Distant Stellar Explosion (2006)
Frail, D. A., Cameron, P. B., Kasliwal, M., Nakar, E., Price, P. A., Berger, E., ...
We present the discovery of radio afterglow emission from the high redshift (z=6.295) burst GRB 050904. The peak flux density for this burst is similar to typical low-redshift gamma-ray bursts (GRB)....
Relativistic ejecta from XRF 060218 and the rate of cosmic explosions (2006)
Soderberg, A. M., Kulkarni, S. R., Nakar, E., Berger, E., Fox, D. B., Frail, D. A., ...
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 all these events...
The Afterglow, Energetics and Host Galaxy of the Short-Hard Gamma-Ray Burst 051221a (2006)
Soderberg, A. M., Berger, E., Kasliwal, M., Frail, D. A., Price, P. A., Schmidt, B. P., ...
We present detailed optical, X-ray and radio observations of the bright afterglow of the short gamma-ray burst 051221a obtained with Gemini, Swift/XRT, and the Very Large Array, as well as optical...
Opening angles, Lorentz factors and confinement of X-ray binary jets (2006)
We present a collation of the available data on the opening angles of jets in X-ray binaries, which in most cases are small (less than 10 degrees). Under the assumption of no confinement, we...
Opening angles, Lorentz factors and confinement of X-ray binary jets (2006)
We present a collation of the available data on the opening angles of jets in X-ray binaries, which in most cases are small (10, comparable to those estimated for active galactic nuclei (AGN) and...
A new y-ray burst classification scheme from GRB 060614. (2006)
Gehrels, N., Norris, J.P., Barthelmy, S., Granot, J., Kaneko, Y., Kouveliotou, C., ...
The afterglow of GRB050709 and the nature of the short-hard gamma-ray bursts (2005)
Fox, D. B., Frail, D. A., Price, P. A., Kulkarni, S. R., Berger, E., Piran, T., ...
The final chapter in the long-standing mystery of the gamma-ray bursts (GRBs) centres on the origin of the short-hard class, suspected on theoretical grounds to result from the coalescence of neutron...
Soderberg, A. M., Nakar, E., Kulkarni, S. R., Berger, E.
We present late-time radio observations of 68 local Type Ibc supernovae, including six events with broad optical absorption lines (``hypernovae''). None of these objects exhibit radio emission...
The Afterglows, Redshifts, and Properties of Swift Gamma-Ray Bursts (2005)
Berger, E., Kulkarni, S. R., Fox, D. B., Soderberg, A. M., Harrison, F. A., Nakar, E., ...
We present optical, near-IR, and radio follow up of sixteen Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data...
Detection of a radio counterpart to the 27 December 2004 giant flare from SGR 1806-20 (2005)
Cameron, PB, Chandra, P, Ray, A, Kulkarni, SR, Frail, DA, Wieringa, MH, ...
It was established over a decade ago that the remarkable high-energy transients known as soft $\gamma$-ray repeaters (SGRs) are located in our Galaxy and originate from neutron stars with intense...
Discovery of a Radio Source following the 27 December 2004 Giant Flare from SGR 1806-20 (2005)
Cameron, P. B., Chandra, P., Ray, A., Kulkarni, S. R., Frail, D. A., Wieringa, M. H., ...
Over a decade ago it was established that the remarkable high energy transients, known as soft gamma-ray repeaters (SGRs), are a Galactic population and originate from neutron stars with intense (~...
Detection of a radio counterpart to the 27 December 2004 giant flare from SGR 1806-20 (2005)
Cameron, P. B., Chandra, P., Ray, A., Kulkarni, S. R., Frail, D. A., Wieringa, M. H., ...
Detection of a radio counterpart to the 27 December 2004 giant flare from SGR 1806-20 (2005)
Cameron, PB, Chandra, P, Ray, A, Kulkarni, SR, Frail, DA, Wieringa, MH, ...
It was established over a decade ago that the remarkable high-energy transients known as soft $\gamma$-ray repeaters (SGRs) are located in our Galaxy and originate from neutron stars with intense...
Afterglows, redshifts, and properties of swift gammaray bursts (2005)
Berger, E., Kulkarni, S. R., Fox, D. B., Soderberg, A. M.., Harrison, F. A., Nakar, E., ...
We present optical, near-IR, and radio follow-up of 16 Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data from...
Afterglows, redshifts, and properties of swift gammaray bursts (2005)
Berger, E., Kulkarni, S. R., Fox, D. B., Soderberg, A. M.., Harrison, F. A., Nakar, E., ...
We present optical, near-IR, and radio follow-up of 16 Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data from...
Afterglows, Redshifts, and Properties of Swift Gamma-Ray Bursts (2005)
Berger, E., Kulkarni, S. R., Fox, D. B., Soderberg, A. M., Harrison, F. A., Nakar, E., ...
We present optical, near-IR, and radio follow-up of 16 Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data from...
GRBs Light Curves - Another Clue on the Inner Engine (2002)
The nature of the `inner engine' that accelerate and collimate the relativistic flow at the cores of GRBs is the most interesting current puzzle concerning GRBs. Numerical simulations have shown that...
New results on the temporal structure of GRBs (2001)
We analyze the temporal structure of long ((T_{90}>2sec)) and short ((T_{90}
Afterglows, redshifts, and properties of Swift gamma-ray bursts
Berger, E, Kulkarni, SR, Fox, DB, Soderberg, AM, Harrison, FA, Nakar, E, ...
We present optical, near-IR, and radio follow-up of 16 Swift bursts, including our discovery of nine afterglows and a redshift determination for three. These observations, supplemented by data from...