Ms
Maja Llena Garde
(Oskar Klein Centre, Stockholm University)
21/06/2012, 15:15
Dwarf spheroidal galaxies are considered very promising targets for dark matter searches in the gamma-ray band due to their large mass-to-light ratio and low astrophysical background. The gamma-ray signal is expected to be very faint, but a combined analysis of a set of dwarf galaxies improves the Fermi-LAT sensitivity to gamma-ray sources and yields enhanced constraints on the dark matter...
Dr
Eugenio Bottacini
(Stanford University)
21/06/2012, 15:40
In the view of the so-called Active Galactic Nuclei (AGN) unified model
the nuclear activity is powered by a super-massive black hole (SMBH)
at the center of the AGN. An optically thick gas-dust structure surrounding
the SMBH absorbs efficiently the nuclear radiation.
Current surveys of the INTEGRAL Soft-Gamma Ray Imager (IBIS/ISGRI) and of the
Burst Alert Telescope (BAT) on board the...
Silvia Vernetto
(INAF Torino and INFN)
21/06/2012, 16:05
ARGO-YBJ is an extensive air shower detector located in Tibet at 4300 m a.s.l.
The detector features and location allow the study of gamma-ray sources with a few hundreds GeV energy threshold and very large duty cycle.
Results so fare obtained will be reviewed.
