6 papers
Cosmological Uses of Gamma-Ray Bursts
S. G. Djorgovski, S. R. Kulkarni, D. A. Frail +12
Studies of the cosmic gamma-ray bursts (GRBs) and their host galaxies are starting to provide interesting or even unique new insights in observational cosmology. GRBs represent a n…
High-Resolution X-ray and Radio Observations of SGR 1900+14 in the Immediate Aftermath of a Giant Flare
D. W. Fox, D. L. Kaplan, S. R. Kulkarni +1
We present the results of Chandra, RXTE, and VLA observations of SGR 1900+14 in the immediate aftermath of its 2001 April 18 giant flare event. In the X-ray band we find the source…
Broadband Observations of the Afterglow of GRB 000926: Observing the Effect of Inverse Compton Scattering and Evidence for a High-Density Environment
F. A. Harrison, S. A. Yost, R. Sari +21
GRB 000926 has one of the best-studied afterglows to-date, with multiple X-ray observations, as well as extensive multi-frequency optical and radio coverage. Broadband afterglow ob…
Discovery of Radio Emission from the Brown Dwarf LP944-20
E. Berger, S. Ball, K. M. Becker +12
Brown dwarfs are classified as objects which are not massive enough to sustain nuclear fusion of hydrogen, and are distinguished from planets by their ability to burn deuterium. Ol…
A search for pulsar wind nebulae using pulsar gating
B. M. Gaensler, B. W. Stappers, D. A. Frail +1
Previous searches for radio pulsar wind nebulae (PWN) suggest that only the youngest and most energetic pulsars power PWN. However the selection effects associated with such search…
The gamma-ray burst of 980425 and its association with the extraordinary radio emission from a most unusual supernova
S. R. Kulkarni, D. A. Frail, M. H. Wieringa +6
Supernova SN 1998bw exploded in the same direction and at the same time as the gamma-ray burst GRB 980425. Here we report radio observations of this type Ic supernova, beginning 4…