INVESTIGADORES
SCIUTTO Sergio Juan
artículos
Título:
Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION.; S. J. SCIUTTO
Revista:
ASTROPARTICLE PHYSICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2007 vol. 27 p. 244 - 253
ISSN:
0927-6505
Resumen:
Data from the Pierre Auger Observatory are analyzed to search for anisotropies
near the direction of the Galactic Centre at EeV energies. The exposure of the
surface array in this part of the sky is already significantly larger than that of the
fore-runner experiments. Our results do not support previous findings of localized
excesses in the AGASA and SUGAR data. We set an upper bound on a point-
like flux of cosmic rays arriving from the Galactic Centre which excludes several
scenarios predicting sources of EeV neutrons from Sagittarius A. Also the events
detected simultaneously by the surface and fluorescence detectors (the hybrid data
set), which have better pointing accuracy but are less numerous than those of the
surface array alone, do not show any significant localized excess from this direction.
detected simultaneously by the surface and fluorescence detectors (the hybrid data
set), which have better pointing accuracy but are less numerous than those of the
surface array alone, do not show any significant localized excess from this direction.
A. Also the events
detected simultaneously by the surface and fluorescence detectors (the hybrid data
set), which have better pointing accuracy but are less numerous than those of the
surface array alone, do not show any significant localized excess from this direction.