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Massive star-formation rates of gamma-ray burst host galaxies: an unobscured view in X-rays
D. Watson, J. Hjorth, P. Jakobsson +3
The hard X-ray (2-10keV) luminosity of a star-forming galaxy tracks its population of high mass X-ray binaries and is essentially unobscured. It is therefore a practically unbiased…
Probing a GRB progenitor at a redshift of z=2: a comprehensive observing campaign of the afterglow of GRB 030226
S. Klose, J. Greiner, A. Rau +38
We report results from a comprehensive follow-up observing campaign of the afterglow of GRB 030226, including VLT spectroscopy, VLT polarimetry, and Chandra X-ray observations. In…
Small-scale variations in the radiating surface of the GRB 011211 jet
P. Jakobsson, J. Hjorth, E. Ramirez-Ruiz +12
We report the discovery of the afterglow of the X-ray rich, long-duration gamma-ray burst GRB 011211 and present evidence for oscillatory behaviour in its early optical light curve…
A very low luminosity X-ray flash: XMM-Newton observations of GRB 031203
D. Watson, J. Hjorth, A. Levan +9
GRB031203 was observed by XMM-Newton twice, first with an observation beginning 6 hours after the burst, and again after 3 days. The afterglow had average 0.2-10.0keV fluxes for th…