Sixty percent of gamma-ray bursts (GRBs) reveal strong MgII absorbing systems, which is a factor of ∼2 times the rate seen along lines-of-sight to quasars. Previous studies argue that the discrepancy in the strong MgII covering factor is most likely to be the result of either quasars being obscured due to dust, or the consequence of many GRBs being strongly gravitationally lensed. We analyze observations of quasars that show strong foreground MgII absorption. We find that GRB lines of sight pass closer to bright galaxies than would be expected for random lines of sight within the impact parameter expected for strong MgII absorption. While this cannot be explained by obscuration in the GRB sample, it is a natural consequence of gravitational...
There is evidence of an overdensity of strong intervening MgII absorption line systems distributed a...
Damped Lyman-alpha absorbers are believed to be associated with galactic disks. We show that gravita...
Previous studies have shown that the incidence rate of intervening strong Mg ii absorbers towards ga...
Sixty percent of gamma-ray bursts (GRBs) reveal strong Mg II absorbing systems, which is a factor of...
Sixty percent of gamma-ray bursts (GRBs) reveal strong Mg II absorbing systems, which is a factor of...
We report on a survey for strong ( rest equivalent width W-r >= 1 angstrom) intervening Mg II system...
GRB afterglows offer a probe of the intergalactic medium out to high redshift which complements obse...
The number of strong (equivalent width> 1Å) Mgii absorbers observed towards Gamma-ray bursts (GR...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
The incidence of strong Mg II systems in gamma-ray burst (GRB) spectra is a few times higher than in...
Artículo de publicación ISIIn 2006, Prochter et al. reported a statistically significant enhancement...
We examine the recent report by Prochter et al. that gamma-ray burst (GRB) sight lines have a much h...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
We use the first data release of the 2-degree Field quasar survey to investigate the effect of gravi...
There is evidence of an overdensity of strong intervening MgII absorption line systems distributed a...
There is evidence of an overdensity of strong intervening MgII absorption line systems distributed a...
Damped Lyman-alpha absorbers are believed to be associated with galactic disks. We show that gravita...
Previous studies have shown that the incidence rate of intervening strong Mg ii absorbers towards ga...
Sixty percent of gamma-ray bursts (GRBs) reveal strong Mg II absorbing systems, which is a factor of...
Sixty percent of gamma-ray bursts (GRBs) reveal strong Mg II absorbing systems, which is a factor of...
We report on a survey for strong ( rest equivalent width W-r >= 1 angstrom) intervening Mg II system...
GRB afterglows offer a probe of the intergalactic medium out to high redshift which complements obse...
The number of strong (equivalent width> 1Å) Mgii absorbers observed towards Gamma-ray bursts (GR...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
The incidence of strong Mg II systems in gamma-ray burst (GRB) spectra is a few times higher than in...
Artículo de publicación ISIIn 2006, Prochter et al. reported a statistically significant enhancement...
We examine the recent report by Prochter et al. that gamma-ray burst (GRB) sight lines have a much h...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
We use the first data release of the 2-degree Field quasar survey to investigate the effect of gravi...
There is evidence of an overdensity of strong intervening MgII absorption line systems distributed a...
There is evidence of an overdensity of strong intervening MgII absorption line systems distributed a...
Damped Lyman-alpha absorbers are believed to be associated with galactic disks. We show that gravita...
Previous studies have shown that the incidence rate of intervening strong Mg ii absorbers towards ga...