129 citations · 563 across the 14 of their papers we have counts for
14 papers
Probing GRB environments with time variability: ULTRASPEC fast imaging of GRB 080210
A. De Cia, P. Jakobsson, G. Björnsson +12
We present high time resolution (1.09 s) photometry of GRB 080210 obtained with ULTRASPEC mounted on the ESO/3.6-m telescope, starting 68.22 min after the burst and lasting for 26.…
Luminosity Functions of Gamma-Ray Burst Afterglows
Guðlaugur Jóhannesson, Gunnlaugur Björnsson, Einar H. Gudmundsson
Aims: Use the standard fireball model to create virtual populations of gamma-ray burst afterglows and study their luminosity functions. Methods: We randomly vary the parameters of…
Numerical counterparts of GRB host galaxies
Stephanie Courty, Gunnlaugur Bjornsson, Einar H. Gudmundsson
We explore galaxy properties in general and properties of host galaxies of gamma-ray bursts (GRBs) in particular, using N-body/Eulerian hydrodynamic simulations and the stellar pop…
Energy Injection in GRB Afterglow Models
Gudlaugur Johannesson, Gunnlaugur Bjornsson, Einar H. Gudmundsson
We extend the standard fireball model, widely used to interpret gamma-ray burst (GRB) afterglow light curves, to include energy injections, and apply the model to the afterglow lig…
Afterglow Light Curves and Broken Power Laws: A Statistical Study
Gudlaugur Jóhannesson, Gunnlaugur Björnsson, Einar H. Gudmundsson
In gamma-ray burst research it is quite common to fit the afterglow light curves with a broken power law to interpret the data. We apply this method to a computer simulated populat…
GRB 021004 modelled by multiple energy injections
A. de Ugarte Postigo, A. J. Castro-Tirado, J. Gorosabel +43
GRB 021004 is one of the best sampled gamma-ray bursts (GRB) to date, although the nature of its light curve is still being debated. Here we present a large amount (107) of new opt…