Discovery of radio-loud broad absorption line quasars using ultraviolet excess and deep radio selection
ASTROPHYSICAL JOURNAL 505:1 (1998) L7-L10
Evidence for non-Gaussianity in the COBE DMR 4 year sky maps
ASTROPHYSICAL JOURNAL 503:1 (1998) L1-L4
The UVX quasar optical luminosity function and its evolution
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 293:1 (1998) 107-112
Structure formation with a self-tuning scalar field
Phys.Rev.Lett. 79 (1997) 4740-4743
Abstract:
A scalar field with an exponential potential has the particular property that it is attracted into a solution in which its energy scales as the dominant component (radiation or matter) of the Universe, contributing a fixed fraction of the total energy density. We study the growth of perturbations in a CDM dominated $\Omega=1$ universe with this extra field, with an initial flat spectrum of adiabatic fluctuations. The observational constraints from structure formation are satisfied as well, or better, than in other models, with a contribution to the energy density from the scalar field $\Omega_\phi \sim 0.1$ which is small enough to be consistent with entry into the attractor prior to nucleosynthesis.Cosmology with a Primordial Scaling Field
(1997)