95 citations · 114 across the 4 of their papers we have counts for
11 papers · 1 filter
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…
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…
Ly-alpha and UV emission from high-redshift GRB hosts: To what extent do GRBs trace star formation?
P. Jakobsson, G. Bjornsson, J. P. U. Fynbo +9
We report the result of a search for Ly-alpha emission from the host galaxies of the gamma-ray bursts (GRBs) 030226 (z = 1.986), 021004 (z = 2.335) and 020124 (z = 3.198). We find…
Host Galaxies of Gamma-Ray Bursts and their Cosmological Evolution
Stephanie Courty, Gunnlaugur Bjornsson, Einar H. Gudmundsson
We use numerical simulations of large scale structure formation to explore the cosmological properties of Gamma-Ray Burst (GRB) host galaxies. Among the different sub-populations f…
Polarization in GRB Afterglows
Gunnlaugur Björnsson
Polarization has been observed in a number of GRB afterglows. We briefly review the models that have been proposed to account for the observed polarization levels. We summarize the…