D. Crociani
University of Bologna
7 Papers
46 Citations
D. Crociani is an academic researcher from University of Bologna. The author has contributed to research in topics: Reionization & Non-Gaussianity. The author has an hindex of 5, co-authored 7 publications.
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Papers
The distribution of Lyman-limit absorption systems during and after reionization
TL;DR: In this paper, the spatial distribution of absorption systems during and following cosmological reionization was explored using fast and versatile seminumeric simulations, and the resulting number of absorbers to the mean free path (mfp) of the ionizing ultraviolet background (UVB) was self-calibrated to fit the absorbers to the mfp and neutral hydrogen fraction.
44
The effects of primordial non-Gaussianity on the cosmological reionization
TL;DR: In this paper, the effects of non-Gaussianity in the primordial density field on the reionization history were investigated, and it was shown that a positive f_NL enhances the formation of high-mass halos at early epochs, and as a consequence the IGM ionized fraction can grow by a factor up to 5 with respect to the corresponding Gaussian model.
20
Cosmic reionization in a dynamic quintessence cosmology
TL;DR: In this article, the authors investigate the effects of a dynamic dark energy component dominant in the universe at late epochs on reionization and show that the topology of bubbles is dominated by high-mass objects.
5
Modelling the quasi-stellar object luminosity and spatial clustering at low redshifts
TL;DR: In this paper, the authors investigate the ability of hierarchical models of quasi-stellar object (QSO) formation and evolution to match the observed luminosity, number counts and spatial clustering of quasars at redshift z < 2.
The effects of primordial non-Gaussianity on the cosmological reionization
TL;DR: In this paper, the effects of non-Gaussianity in the primordial density field on the reionization history were investigated, and it was shown that a positive non-linearity parameter enhances the formation of high-mass halos at early epochs, and as a consequence, the IGM ionized fraction can grow by a factor of up to 5 with respect to the corresponding Gaussian model.