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STIS Near Ultraviolet Time-Tagged Spectra of the Crab Pulsar
Theodore R. Gull, Don J. Lindler, D. Michael Crenshaw +8
We present the spectrum and pulse profile of the Crab Pulsar in the near ultraviolet (1600-3200 Angstroms) observed with the Space Telescope Imaging Spectrograph (STIS) during the…
The decay of optical emission from the Gamma-Ray Burst GRB 970228
Titus J. Galama, Paul J. Groot, Jan van Paradijs +6
We present the R_c band light curve of the optical transient (OT) associated with GRB970228, based on re-evaluation of existing photometry. Data obtained until April 1997 suggested…
The Gamma Ray Bursts GRB970228 and GRB970508: What Have We Learnt?
Mario Livio, Kailash C. Sahu, Larry Petro +7
We examine what we regard as key observational results on GRB 970228 and GRB 970508 and show that the accumulated evidence strongly suggests that gamma-ray bursts (GRBs) are cosmol…
Imaging and spectroscopy of arcs around the most luminous X-ray cluster RX J1347.5-1145
Kailash C. Sahu, Richard A. Shaw, Mary Elizabeth Kaiser +9
The cluster RX J1347.5-1145, the most luminous cluster in the X-ray wavelengths, was imaged with the newly installed Space Telescope Imaging Spectrograph (STIS) on-board HST. Its r…
The optical counterpart to gamma-ray burst GRB970228 observed using the Hubble Space Telescope
Kailash C. Sahu, Mario Livio, Larry Petro +7
Although more than 2,000 astronomical gamma-ray bursts (GRBs) have been detected, and numerous models proposed to explain their occurrence, they have remained enigmatic owing to th…
Detecting Planets Through Microlensing
Kailash C. Sahu
More than 100 microlensing events have been detected during the last ~4 years, most of them towards the Galactic Bulge. Since the line of sight towards the Bulge passes through the…