423 citations · 4.3k across the 68 of their papers we have counts for
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Spectral shape of the UV ionizing background and OVI absorbers at z ~ 1.5 towards HS0747+4259
D. Reimers, I. I. Agafonova, S. A. Levshakov +5
We report on high resolution spectra of the bright QSO HS0747+4259 (zem = 1.90, V = 15.8) observed to search for intermediate redshift OVI absorption systems. The spectra were obta…
Intergalactic HeII absorption towards QSO 1157+3143
D. Reimers, C. Fechner, H. -J. Hagen +3
We report the discovery of a further line of sight allowing detection of HeII Ly alpha absorption by the intergalactic medium. A HST/STIS survey of 32 bright z ~ 3 quasars selected…
Signature of Galactic Outflows as Absorption-Free Gaps in the Ly-alpha Forest
Taotao Fang, Abraham Loeb, David Tytler +2
Powerful outflows from star-forming galaxies are expected to push away the neutral intergalactic medium (IGM) around those galaxies, and produce absorption-free gaps in the Ly-alph…
The H I opacity of the intergalactic medium at redshifts 1.6 < z < 3.2
David Kirkman, David Tytler, Nao Suzuki +8
We use high quality echelle spectra of 24 QSOs to provide a calibrated measurement of the total amount of Lyman-alpha forest absorption (DA) over the redshift range 2.2 < z < 3.2.…