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Clustering of galaxies around GRB sight-lines
Vladimir Sudilovsky, Jochen Greiner, Arne Rau +11
There is evidence of an overdensity of strong intervening MgII absorption line systems distributed along the lines of sight towards GRB afterglows relative to quasar sight-lines. I…
The SEDs and Host Galaxies of the dustiest GRB afterglows
T. Krühler, J. Greiner, P. Schady +18
(Abridged) Until recently the information inferred from gamma-ray burst follow-up observations was mostly limited to optically bright afterglows, biasing all demographic studies ag…
GRB 090426: Discovery of a jet break in a short burst afterglow
A. Nicuesa Guelbenzu, S. Klose, A. Rossi +14
Context: The link between the duration of GRBs and the nature of their progenitors remains disputed. Short bursts (with durations of less than ~2 s) are less frequently observed, t…
A very metal poor Damped Lyman-alpha system revealed through the most energetic GRB 090926A
Arne Rau, S. Savaglio, T. Krühler +9
We present VLT/FORS2 spectroscopy and GROND optical/near-IR photometry of the afterglow of the bright Fermi/LAT GRB 090926A. The spectrum shows prominent Lyman-alpha absorption wit…