Artículo de publicación ISIIn 2006, Prochter et al. reported a statistically significant enhancement of very strong Mgii absorption systems intervening the sight lines to gamma-ray bursts (GRBs) relative to the incidence of such absorption along quasar sight lines. This counterintuitive result has inspired a diverse set of astrophysical explanations (e.g., dust, gravitational lensing) but none of these has obviously resolved the puzzle. Using the largest set of GRB afterglow spectra available, we reexamine the purported enhancement. In an independent sample of GRB spectra with a survey path three times larger than Prochter et al., we measure the incidence per unit redshift of 1 Å rest-frame equivalent width Mg ii absorbers at z ≈ 1 t...
The incidence of strong Mg II systems in gamma-ray burst (GRB) spectra is a few times higher than in...
Previous studies have shown that the incidence rate of intervening strong Mg ii absorbers towards ga...
International audienceWe analyze the properties of Mg ii absorption systems detected along the sight...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg ii absor...
We report on a survey for strong ( rest equivalent width W-r >= 1 angstrom) intervening Mg II system...
Previous studies have shown that the incidence rate of intervening strong Mg ii absorbers towards ga...
International audiencePrevious studies have shown that the incidence rate of intervening strong Mg I...
The incidence of strong Mg II systems in gamma-ray burst (GRB) spectra is a few times higher than in...
Previous studies have shown that the incidence rate of intervening strong Mg ii absorbers towards ga...
International audienceWe analyze the properties of Mg ii absorption systems detected along the sight...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg II absor...
In 2006, Prochter et al. reported a statistically significant enhancement of very strong Mg ii absor...
We report on a survey for strong ( rest equivalent width W-r >= 1 angstrom) intervening Mg II system...
Previous studies have shown that the incidence rate of intervening strong Mg ii absorbers towards ga...
International audiencePrevious studies have shown that the incidence rate of intervening strong Mg I...
The incidence of strong Mg II systems in gamma-ray burst (GRB) spectra is a few times higher than in...
Previous studies have shown that the incidence rate of intervening strong Mg ii absorbers towards ga...
International audienceWe analyze the properties of Mg ii absorption systems detected along the sight...