activity
20052026
most citedEvidence of strong quasar feedback in the early Universe

444 citations · 6.8k across the 118 of their papers we have counts for

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8 papers · 1 filter

astro-ph2008

The Luminosity Function of Long Gamma-Ray Bursts and their rate at z>6

R. Salvaterra, S. Campana, G. Chincarini +6

We compute the luminosity function (LF) and the formation rate of long gamma ray bursts (GRBs) in three different scenarios: i) GRBs follow the cosmic star formation and their LF i…

astro-ph2008★ 65 cited

Signatures of reionization on Lyman alpha emitters

Pratika Dayal, Andrea Ferrara, Simona Gallerani

We use a semi-analytic model of Lyman alpha emitters (LAEs) to constrain the reionization history. By considering two physically motivated scenarios in which reionization ends eith…

astro-ph2008

Was the Universe neutral beyond redshift six?

S. Gallerani, A. Ferrara, X. Fan +2

We provide measurements of the neutral hydrogen fraction xHI at z~6, by comparing semi-analytical models of the Lyalpha forest with observations of high-z quasars and Gamma Ray Bur…

astro-ph2007★ 55 cited

On the minimum mass of reionization sources

T. Roy Choudhury, A. Ferrara, S. Gallerani

By means of carefully calibrated semi-analytical reionization models, we estimate the minimum mass of star-forming haloes required to match the current data. Models which do not in…

astro-ph2007★ 44 cited

Testing Reionization with Gamma Ray Burst Absorption Spectra

S. Gallerani, R. Salvaterra, A. Ferrara +1

We propose to study cosmic reionization using absorption line spectra of high-redshift Gamma Ray Burst (GRB) afterglows. We show that the statistics of the dark portions (gaps) in…

astro-ph2007★ 99 cited

Glimpsing through the high redshift neutral hydrogen fog

S. Gallerani, A. Ferrara, X. Fan +1

We analyze the transmitted flux in a sample of 17 QSOs spectra at 5.74<zem<6.42 to obtain tighter constraints on the volume-averaged neutral hydrogen fraction, xHI, at z~6. We stud…