Abstract
The Pierre Auger Observatory is the largest observatory for the detection of ultra high energy cosmic rays (UHECRs). It allows a detailed measurement of the energy spectrum, the mass composition and the arrival directions of the primary cosmic rays with energies above 100 PeV. The data collected with the Pierre Auger Observatory show a suppression of the cosmic ray flux at energies above 40 EeV but the nature of this suppression is still unclear; according to theoretical prediction it could be caused by the interaction of cosmic rays with the CMB or by energy limitations of the cosmic rays sources. Another puzzle concerns the specific origin of UHECRs. Some indications can be obtained from studying the distribution of their arrival directions. Recently a dipole anisotropy has been observed which indicates that UHECRs have an extragalactic origin. I will present the recent results of the Pierre Auger Observatory about the energy spectrum, the mass composition and the arrival directions of UHECRs. I will also discuss the future prospects of the Observatory.
Highlights
Since 2004, in the province of Mendoza in Argentina is operational the largest facility to detect cosmic rays built so far; namely the Pierre Auger Observatory [1]
The Pierre Auger Observatory is the largest observatory for the detection of ultra high energy cosmic rays (UHECRs)
It allows a detailed measurement of the energy spectrum, the mass composition and the arrival directions of the primary cosmic rays with energies above 100 PeV
Summary
Since 2004, in the province of Mendoza in Argentina is operational the largest facility to detect cosmic rays built so far; namely the Pierre Auger Observatory [1]. The Pierre Auger Observatory is the largest observatory for the detection of ultra high energy cosmic rays (UHECRs).
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