218 citations · 668 across the 6 of their papers we have counts for
6 papers
On the nature of nearby GRB/SN host galaxies
J. Sollerman, G. Ostlin, J. P. U. Fynbo +3
We present and discuss optical diagnostics of the low redshift (z<0.2) galaxies that are known to have hosted supernovae associated with gamma-ray bursts (GRBs). The three galaxies…
Swift Identification of Dark Gamma-Ray Bursts
P. Jakobsson, J. Hjorth, J. P. U. Fynbo +4
We present an optical flux vs. X-ray flux diagram for all known gamma-ray bursts (GRBs) for which an X-ray afterglow has been detected. We propose an operational definition of dark…
The line-of-sight towards GRB 030429 at z = 2.66: Probing the matter at stellar, galactic and intergalactic scales
P. Jakobsson, J. Hjorth, J. P. U. Fynbo +21
We report the discovery of the optical afterglow (OA) of the long-duration gamma-ray burst GRB 030429, and present a comprehensive optical/near-infrared dataset used to probe the m…
Delayed soft X-ray emission lines in the afterglow of GRB 030227
D. Watson, J. N. Reeves, J. Hjorth +2
Strong, delayed X-ray line emission is detected in the afterglow of GRB 030227, appearing near the end of the XMM-Newton observation, nearly twenty hours after the burst. The obser…
Absorption Systems in the Spectrum of GRB 021004
P. Møller, J. P. U. Fynbo, J. Hjorth +10
We report on a 3600 s spectrum of GRB 021004 obtained with the Nordic Optical Telecope on La Palma 10.71 hours after the burst. We identify absorption lines from five systems at re…
The Afterglow of GRB010222: A Case of Continuous Energy Injection
G. Bjornsson, J. Hjorth, K. Pedersen +1
The optical lightcurve of GRB010222 exhibited one of the slowest decays of any gamma-ray burst to date. Its broadband properties have been difficult to explain with conventional af…