Search for first harmonic modulation in the right ascension distribution of cosmic rays detected at the Pierre Auger Observatory
Abstract:
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 as well as with some theoretical expectations. © 2011 Published by Elsevier B.V.
Año de publicación:
2011
Keywords:
- Large scale anisotropies
- Ultra-high energy cosmic rays
- Pierre auger observatory
Fuente:
google
scopus
Tipo de documento:
Article
Estado:
Acceso restringido
Áreas de conocimiento:
Áreas temáticas:
- Física moderna
- Cuerpos y fenómenos celestes específicos
Contribuidores:
Allard D.
Albuquerque I.F.M.
Bardenet R.
Buchholz P.
Abreu P.
Chou A.
Aublin J.
Cotti U.
Boncioli D.
Avenier M.
Burton R.E.
Caruso R.
Neto J.R.T.d.M.
de Jong S.J.
Castellina A.
Bonino R.
Daumiller K.
Ave M.
Barber K.B.
Dallier R.
Chudoba J.
Becker K.H.
Creusot A.
Decerprit G.
Coutu S.
Dagoret-Campagne S.
Blanco M.
Andringa S.
Cronin J.W.
Benzvi S.Y.
De Donato C.
Blanco F.
Barbosa A.F.
Covault C.E.
Cazón L.
Biermann P.L.
Allekotte I.
Baughman B.M.
Aglietta M.
De Almeida R.M.
Cooper M.J.
Mary L. Díaz Castro
Javier Garcia
Elsa Alexandra Cepeda Asto
Chiavassa A.
Billoir P.
Aminaei A.
Coluccia M.R.
Bonifazi C.
Allison P.
De Mello W.J.M.
de Vries K.D.
Bruijn R.
Allen J.D.
Bellido J.A.
Avila G.
Brown W.C.
del Peral L.
Dasso S.
Anchordoqui L.A.
Chinellato J.A.
Bl̈umer H.
Caramete L.
Anticic T.
Caballero-Mora K.S.
Bertou X.
Borodai N.
Dawson B.R.
Cester R.
Bohã̌cov́a M.
Criss A.
Mitri I.D.
Arganda E.
Ambrosio M.
Barroso S.L.C.
Domenico M.D.
Bäcker T.
Brack J.
Balzer M.
Cook H.
De La Vega G.
Contreras F.
Beatty J.J.
Souza V.d.
Curutiu A.
Assis P.
Clay R.W.
Berat C.
Asorey H.G.
Ahn E.J.
Conceião R.
Bueno A.
Chauvin J.
Arqueros F.
Becker B.R.
Cordier A.
Coppens J.
Brogueira P.
Alvarez Castillo J.
Bleve C.
Cataldi G.
Aramo C.
Alvarez-Mu˜niz J.