78 citations · 173 across the 5 of their papers we have counts for
4 papers · 1 filter
The Goldilocks problem of the quasar contribution to reionization
Enrico Garaldi, Michele Compostella, Cristiano Porciani
The detection of an unexpectedly large number of faint candidate quasars (QSO) at has motivated Madau and Haardt to investigate a reionization scenario in which activ…
The Concerted Impact of Galaxies and QSOs on the Ionization and Thermal State of the Intergalactic Medium
Koki Kakiichi, Luca Graziani, Benedetta Ciardi +4
We present a detailed analysis of the ionization and thermal structure of the intergalactic medium (IGM) around a high-redshift QSO using a large suite of cosmological, multi-frequ…
AGN-driven helium reionization and the incidence of extended HeIII regions at redshift z>3
Michele Compostella, Sebastiano Cantalupo, Cristiano Porciani
We use hydrodynamic simulations post-processed with the radiative-transfer code RADAMESH to assess recent claims that the low HeII opacity observed in z>3 quasar spectra may be inc…
The imprint of inhomogeneous HeII reionization on the HI and HeII Ly-alpha forest
Michele Compostella, Sebastiano Cantalupo, Cristiano Porciani
We use a set of AMR hydrodynamic simulations post-processed with the radiative-transfer code RADAMESH to study how inhomogeneous HeII reionization affects the intergalactic medium…