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17 papers · 1 filter
Faint Blue Galaxies and Merging: the Evolution of the Luminosity Function
A. Cavaliere, N. Menci
We probe to what extent not only the counts of the faint blue galaxies and their redshift distribution but also their z-resolved luminosity functions can be explained in terms of b…
Imprints of Primordial Voids on the CMB
C. Baccigalupi, L. Amendola, F. Occhionero
We generalize in several ways the results existing in the literature: a) we make use of an exact general relativistic solution for a spherical, nearly empty cavity in the matter do…
The discovery of 13s X-ray pulsations from the hydrogen depleted subdwarf O6 star binary HD49798
G. L. Israel, L. Stella, L. Angelini +4
We discovered strong 13s X-ray pulsations in the public Rosat PSPC light curve of HD49798, a 1.55d single-component spectroscopic binary containing a hydrogen depleted subdwarf O6…
Reconstruction of the bubble nucleating potential
Luca Amendola, Carlo Baccigalupi, Rostislav Konoplich +2
We calculate analytically the bubble nucleation rate in a model of first order inflation which is able to produce large scale structure. The computation includes the first-order de…
The clustering properties of the Lyman-alpha clouds
S. Cristiani, S. D'Odorico, V. D'Odorico +3
We analyze the clustering properties of a high-resolution (~10 km/s) sample of about 1600 Lyman-alpha lines in the spectra of 15 quasars, obtained in the framework of an ESO key-pr…
The Soft X-Ray Properties of a Complete Sample of Optically Selected Quasars II. Final Results
Ari Laor, Fabrizio Fiore, Martin Elvis +2
We present the final results of a ROSAT PSPC program to study the soft X-ray emission properties of a complete sample of low quasars. The main results are: 1. There is no evide…