Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5 x 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 distri...
| Autores: | ; ; ; ; ; ; |
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| Tipo de documento: | Artículo |
| Fecha de publicación: | 2011 |
| País: | España |
| Institución: | Universidad Complutense de Madrid (UCM) |
| Repositorio: | Docta Complutense |
| Lenguaje: | Inglés |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/45110 |
| Acceso en línea: | https://hdl.handle.net/20.500.14352/45110 |
| Nivel de acceso: | Acceso abierto |
| Palabra clave: | 539.1 Energy spectrum Surface detector Anisotropy Array Origin. Física nuclear 2207 Física Atómica y Nuclear |
| Sumario: | We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5 x 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. (C) 2011 Elsevier B.V. All rights reserved. |
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