Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
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The Pierre Auger Collaboration; Pastor Carpi, Sergio
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Aquest document és un/a article, creat/da en: 2011
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We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5×10^17 eV with the surface detector array of the Pierre Auger Observatory, reporting on both the phase and the amplitude measurements of the first harmonic modulation in the right-ascension distribution. Upper limits on the amplitudes are obtained, which provide the most stringent bounds at present, being below 2% at 99% C.L. for EeV energies. We also compare our results to those of previous experiments as well as with some theoretical expectations. |
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