124 citations · 1.8k across the 68 of their papers we have counts for
7 papers · 2 filters
The potential of tracing the star formation history with HI 21-cm in intervening absorption systems
S. J. Curran
Unlike the neutral gas density, which remains largely constant over redshifts of 0 < z < 5, the star formation density exhibits a strong redshift dependence, increasing from the pr…
Detection of CH+, SH+, and their 13C- and 34S- isotopologues toward PKS1830-211
S. Muller, H. S. P. M"uller, J. H. Black +13
The z=0.89 molecular absorber toward PKS1830-211 provides us with the opportunity to probe the chemical and physical properties of the interstellar medium in the disk of a galaxy a…
Further Observational Evidence for a Critical Ionising Luminosity in Active Galaxies
S. J. Curran, R. W. Hunstead, H. M. Johnston +4
We report the results of a survey for HI 21-cm absorption at redshifts of z > 2.6 in a new sample of radio sources with the Green Bank and Giant Metrewave Radio Telescopes. From a…
Connecting X-ray absorption and 21cm neutral hydrogen absorption in obscured radio AGN
V. A. Moss, J. R. Allison, E. M. Sadler +22
Many radio galaxies show the presence of dense and dusty gas near the active nucleus. This can be traced by both 21cm HI absorption and soft X-ray absorption, offering new insight…
A possible connection between the spin temperature of damped Lyman-alpha absorption systems and star formation history
S. J. Curran
We present a comprehensive analysis of the spin temperature/covering factor degeneracy, T/f, in damped Lyman-alpha absorption systems. By normalising the upper limits and including…
Atomic and Molecular Absorption in Redshifted Radio Sources
S. J. Curran, M. T. Whiting, J. R. Allison +2
We report on a survey for associated HI 21-cm and OH 18-cm absorption with the Giant Metrewave Radio Telescope at redshifts z = 0.2-0.4. Although the low redshift selection ensures…