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Radiative Feedback in Relic HII Regions at High-Redshift
Andrei Mesinger, Greg L. Bryan, Zoltan Haiman
UV radiation from early astrophysical sources could have a large impact on subsequent star formation in nearby protogalaxies. Here we study the radiative feedback from the first, s…
Fluctuations in the High-Redshift Lyman-Werner Background: Close Halo Pairs as the Origin of Supermassive Black Holes
Mark Dijkstra, Zoltan Haiman, Andrei Mesinger +1
The earliest generation of stars and black holes must have established an early 'Lyman-Werner' background (LWB) at high redshift, prior to the epoch of reionization. Because of the…
The ionizing background at the end of overlap
Steven Furlanetto, Andrei Mesinger
One of the most sought-after signatures of reionization is a rapid increase in the ionizing background (usually measured through the Lyman-alpha optical depth toward distant quasar…
UV Radiative Feedback During the Advanced Stages of Reionization
Andrei Mesinger, Mark Dijkstra
The ionizing ultraviolet background (UVB) during reionization can suppress the gas content of low-mass galaxies, even those capable of efficient atomic cooling, and thus lead to an…
Lyman-alpha Damping Wing Constraints on Inhomogeneous Reionization
Andrei Mesinger, Steven Furlanetto
One well-known way to constrain the hydrogen neutral fraction, x_H, of the high-redshift intergalactic medium (IGM) is through the shape of the red damping wing of the Lya absorpti…
Lyman-alpha Emitters During the Early Stages of Reionization
Andrei Mesinger, Steven Furlanetto
We investigate the potential of exploiting Lya Emitters (LAEs) to constrain the volume-weighted mean neutral hydrogen fraction of the IGM, x_H, at high redshifts (specifically z~9)…