Speaker
Silvia Mollerach
Description
The Pierre Auger Observatory has been in operation since January 2004, detecting
cosmic rays with energies from few 10 PeV to more than 100 EeV. We present the
results of anisotropy studies of the arrival directions at different angular
scales and energies using both the data recorded by the 1500 m grid array,
covering 3000 km^2 and fully efficient above 3 EeV, and the 750 m grid array,
covering 25 km^2 and fully efficient above 0.3 EeV. The large scale analysis
of the right ascension distribution using the 1500 m array data shows
interesting hints of an equatorial dipolar component. Also a tridimensional
reconstruction of the dipolar and quadrupolar components is presented, leading
to upper limits that put bounds on models with a galactic component at
energies above 1 EeV. Results from a blind search of overdensities at various
angular scales and energy ranges above 1 EeV are also presented, as well as
those of the search for galactic neutron sources. At the highest energies,
the results of the study of the correlation with AGN directions are presented.
