D'Elia, ValerioValerioD'Elia2020-09-172020-09-172011-03-01https://hdl.handle.net/20.500.13025/2157Astronomische Nachrichten, Vol.332, Issue 3, p.272GRB absorption spectroscopy opened up a new window in the study of the high redshift Universe, especially with the launch of the Swift satellite and the quick and precise localization of the afterglow. Eight-meter class telescopes can be repointed within a few hours from the GRB, enabling the acquisition of high signal-to-noise ratio and high resolution afterglow spectra. In this paper I will give a short review of what we learned through this technique, and I will present some of the first results obtained with the X-shooter spectrograph.gamma rays burstsISM abundancesISM kinematics and dynamicsISM structureline profiles10.1002/asna.201111533http://adsabs.harvard.edu/abs/2011AN....332..272D2011AN....332..272D