3 citations · 3 across the 2 of their papers we have counts for
8 papers
Can Cosmic Rays Heat the Intergalactic Medium?
Saumyadip Samui, Kandaswamy Subramanian, Raghunathan Srianand
Supernova explosions in the early star forming galaxies will accelerate cosmic rays (CRs). CRs are typically confined in the collapsed objects for a short period before escaping in…
The Structure of High Redshift Galactic Halos
Sara L. Ellison, Rodrigo Ibata, Max Pettini +4
Observations of multiple or lensed QSOs at high redshift can be used to probe transverse structure in intervening absorption systems. Here we present results obtained from STIS spe…
H_2 molecules in damped systems
R. Srianand, P. Petitjean, C. Ledoux
Damped Lyman alpha systems seen in the spectra of high-z QSOs arise in high-density neutral gas in which molecular hydrogen (H_2) should be conspicuous. Systematic searches to dete…
Molecular hydrogen and the nature of damped Lyman-alpha systems
Patrick Petitjean, R. Srianand, Cédric Ledoux
We report results from our mini-survey for molecular hydrogen in eight high redshift damped Lyman-alpha (DLA) systems using the ESO Ultra-violet and Visible Spectrograph on the VLT…
Structure of the MgII and damped Lyman-alpha systems along the line of sight to APM 08279+5255
Patrick Petitjean, Bastien Aracil, R. Srianand +1
A study of the absorption systems toward the gravitationally lensed quasar APM 08279+5255 is presented. Most of the MgII systems in the redshift range 1.2-2.07, although saturated,…
Physical conditions in broad and associated narrow absorption-line systems toward APM 08279+5255
R. Srianand, P. Petitjean
Results of a careful analysis of the absorption systems with zabs = zem seen toward the bright, z_em ~ 3.91, gravitationally lensed quasar APM 08279+5255 are presented. Two of the…