104 citations · 206 across the 2 of their papers we have counts for
2 papers
astro-ph.CO2011★ 102 cited
The End of Helium Reionization at z~2.7 Inferred from Cosmic Variance in HST/COS HeII Lyman Alpha Absorption Spectra
Gábor Worseck, J. Xavier Prochaska, Matthew McQuinn +6
We report on the detection of strongly varying intergalactic HeII absorption in HST/COS spectra of two z~3 quasars. From our homogeneous analysis of the HeII absorption in these an…
astro-ph2008★ 104 cited
An unbiased measurement of the UV background and its evolution via the proximity effect in quasar spectra
Aldo Dall'Aglio, Lutz Wisotzki, Gabor Worseck
We used 40 high resolution, high S/N QSO spectra at 2.1<z<4.7 to search for the signature of the proximity effect in the HI Lyalpha forest. Comparing the effective optical depth ne…