537 citations · 999 across the 16 of their papers we have counts for
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astro-ph.GA2017★ 28 cited
Modeling the HeII Transverse Proximity Effect: Constraints on Quasar Lifetime and Obscuration
Tobias M. Schmidt, Joseph F. Hennawi, Gábor Worseck +3
The HeII transverse proximity effect - enhanced HeII Lyα transmission in a background sightline caused by the ionizing radiation of a foreground quasar - offers a unique opportunit…
astro-ph.GA2017★ 49 cited
Statistical Detection of the HeII Transverse Proximity Effect: Evidence for Sustained Quasar Activity for 25 Million Years
Tobias M. Schmidt, Gabor Worseck, Joseph F. Hennawi +2
The HeII transverse proximity effect -- enhanced HeII Ly~transmission in a background sightline caused by the ionizing radiation of a foreground quasar -- offers a unique opport…