The Laser Interferometer Space Antenna (LISA) will be a transformative experiment for
gravitational wave astronomy, and, as such, it will offer unique opportunities to address many key …

70 AIM, UMR 7158, CEA/DRF, CNRS, Universit� Paris Diderot, Irfu/Service d'Astrophysique,
Centre de Saclay, FR-91191 Gif-sur-Yvette, France

We present a detailed calculation of the propagation of AGN-like ionizing radiation through
the intergalactic space. We model the ionization state of absorbing clouds, and show that the …

… We take C(t) ≡ 10 −0.4A(ν, t) at all photon energies below 1 ryd and C(t) ≡ <f esc >
above the Lyman limit. In our treatment, the escape fraction <f esc > is a free parameter that …

… depth t The rest (1 -f)PG is emitted as local thermal flux by … Finally note that for f significantly
lower than 1, A - 1 is … calculations can be found in Haardt & Matt (1993), where it is models. …

… We have proposed (Haardt & Maraschi 1991, Haardt & Maraschi 1993, hereinafter Papers
I … , we see that A is a function of three parameters, namely f, C and tc/td. However in the limit …

… As a corroboration of the slowly evolving LyC emissivity adopted in this work, we have run
a modified version of our radiative transfer code CUBA (Haardt & Madau 2012) to estimate the …

ABSTRACT A two-phase accretion disk model is considered. A substantial fraction, f, of the
gravitational power is

We assess models for the assembly of supermassive black holes (SMBHs) at the center of
galaxies that trace their hierarchical buildup far up in the dark halo" merger tree." Motivated by …

The history of the transition from a neutral intergalactic medium (IGM) to one that is almost
fully ionized can reveal the character of cosmological ionizing sources. We study the evolution …