INVESTIGADORES
HANSEN Patricia Maria
artículos
Título:
Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION (P HANSEN PERTENECE A LA COLABORACIÓN AUGER)
Revista:
ASTROPARTICLE PHYSICS
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Lugar: Amsterdam; Año: 2011 vol. 34 p. 627 - 639
ISSN:
0927-6505
Resumen:
We present the results of searches for dipolar-type anisotropies in different energy ranges above 2.5 1017 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 aswell as with some theoretical expectations.
