239 citations · 2.4k across the 79 of their papers we have counts for
3 papers · 1 filter
Serendipitous discovery of a physical binary quasar at z=1.76
E. Altamura, S. Brennan, A. Leśniewska +7
Binary quasars are extremely rare objects, used to investigate clustering on very small scales at different redshifts. The cases where the two quasar components are gravitationally…
Silicon and iron dust in gamma-ray burst host galaxy absorbers
T. Zafar, K. E. Heintz, A. Karakas +8
Depletion studies provide a way to understand the chemical composition of interstellar dust grains. We here examine 23 gamma-ray bursts (GRB) optical afterglow spectra (spanning 0.…
The effect of dust bias on the census of neutral gas and metals in the high-redshift Universe due to SDSS-II quasar colour selection
Jens-Kristian Krogager, Johan P. U. Fynbo, Palle Møller +3
We present a systematic study of the impact of a dust bias on samples of damped Lyman- absorbers (DLAs). This bias arises as an effect of the magnitude and colour criteria utili…