3 papers
astro-ph1999
Constraints on the slope of the dark halo mass function by microlensing observables
V. F. Cardone, R. de Ritis, A. A. Marino
We investigate the dark halo lens mass function (MF) for a wide class of spheroidal non singular isothermal models comparing observed and observable microlensing quantities for MAC…
astro-ph1999
Detecting planets around stars in nearby galaxies
G. Covone, R. de Ritis, M. Dominik +1
The only way to detect planets around stars at distances of several kpc is by (photometric or astrometric) microlensing observations. In this paper, we show that the capability of…
gr-qc1998
The effective cosmological constant in higher order gravity theories
S. Capozziello, R. de Ritis, A. A. Marino
An effective time--dependent cosmological constant can be recovered for higher--order theories of gravity by extending to these ones the no--hair conjecture. The results are applie…