Speaker
Dr
Giancarlo Cella
(Pisa U., INFN and VIRGO)
Description
A stochastic background of gravitational waves can be described as a superposition of several
uncorrelated contributions. It can be of both cosmological and astrophysical origin. In the first
case, it can constitute potentially a unique probe of the primordial universe. In the second, it can
give precious information on stellar populations. After discussing how this kind of signal can be
detected and what information can be estracted from its study, I review the past and ongoing efforts
to find it, the current upper limits and the future perspective for its detection.
