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Anisotropy studies around the galactic centre at EeV energies with the Auger Observatory

Abstract:

Data from the Pierre Auger Observatory are analyzed to search for anisotropies near the direction of the Galactic Centre at EeV energies. The exposure of the surface array in this part of the sky is already significantly larger than that of the fore-runner experiments. Our results do not support previous findings of localized excesses in the AGASA and SUGAR data. We set an upper bound on a point-like flux of cosmic rays arriving from the Galactic Centre which excludes several scenarios pbkp_redicting sources of EeV neutrons from Sagittarius A. Also the events detected simultaneously by the surface and fluorescence detectors (the 'hybrid' data set), which have better pointing accuracy but are less numerous than those of the surface array alone, do not show any significant localized excess from this direction. © 2006 Elsevier B.V. All rights reserved.

Año de publicación:

2007

Keywords:

  • cosmic rays
  • Galactic centre
  • Anisotropies

Fuente:

scopusscopus
googlegoogle

Tipo de documento:

Article

Estado:

Acceso restringido

Áreas de conocimiento:

  • Espectroscopia astronómica
  • Ciencia planetaria

Áreas temáticas:

  • Cuerpos y fenómenos celestes específicos

Contribuidores:

Connolly B.M.Connolly B.M.
Allard D.Allard D.
Boghrat P.Boghrat P.
Asch T.Asch T.
Buchholz P.Buchholz P.
Chou A.Chou A.
Aublin J.Aublin J.
Cotti U.Cotti U.
Caruso R.Caruso R.
Neto J.R.T.d.M.Neto J.R.T.d.M.
de Jong S.J.de Jong S.J.
Atulugama B.S.Atulugama B.S.
Castellina A.Castellina A.
Bonino R.Bonino R.
Chye J.Chye J.
Daumiller K.Daumiller K.
Ave M.Ave M.
Bacelar J.Bacelar J.
Quang T.D.Quang T.D.
Becker K.H.Becker K.H.
Barnhill D.Barnhill D.
Coutu S.Coutu S.
Dagoret-Campagne S.Dagoret-Campagne S.
Cronin J.W.Cronin J.W.
Benzvi S.Y.Benzvi S.Y.
De Donato C.De Donato C.
Darriulat P.Darriulat P.
Cataldi G.Cataldi G.
Blanco F.Blanco F.
Barbosa A.F.Barbosa A.F.
Covault C.E.Covault C.E.
Blasi P.Blasi P.
Cazón L.Cazón L.
Biermann P.L.Biermann P.L.
Allekotte I.Allekotte I.
Selva A.D.Selva A.D.
Aglietta M.Aglietta M.
Fratte C.D.Fratte C.D.
De Almeida R.M.De Almeida R.M.
Javier GarciaJavier Garcia
Elsa Alexandra Cepeda AstoElsa Alexandra Cepeda Asto
Leigui de Oliveira M.A.Leigui de Oliveira M.A.
Chiavassa A.Chiavassa A.
Billoir P.Billoir P.
Dembinski H.Dembinski H.
Bonifazi C.Bonifazi C.
Arisaka K.Arisaka K.
Barkhausen M.Barkhausen M.
Allison P.Allison P.
De Mello W.J.M.De Mello W.J.M.
Armengaud E.Armengaud E.
Bellido J.A.Bellido J.A.
Avila G.Avila G.
Cai B.Cai B.
del Peral L.del Peral L.
Aguirre C.Aguirre C.
Anchordoqui L.A.Anchordoqui L.A.
Abraham J.Abraham J.
Chinellato J.A.Chinellato J.A.
Claes D.Claes D.
Bl̈umer H.Bl̈umer H.
Caballero-Mora K.S.Caballero-Mora K.S.
Bertou X.Bertou X.
Dawson B.R.Dawson B.R.
Cester R.Cester R.
Clay S.B.Clay S.B.
Bohã̌cov́a M.Bohã̌cov́a M.
Mitri I.D.Mitri I.D.
Ambrosio M.Ambrosio M.
Busca N.G.Busca N.G.
Barroso S.L.C.Barroso S.L.C.
Clark P.D.J.Clark P.D.J.
Bäcker T.Bäcker T.
Bauleo P.Bauleo P.
Brack J.Brack J.
Boratav M.Boratav M.
Brunet J.M.Brunet J.M.
Beatty J.J.Beatty J.J.
Souza V.d.Souza V.d.
Blanch-Bigas O.Blanch-Bigas O.
Badagnani D.Badagnani D.
Clay R.W.Clay R.W.
Berat C.Berat C.
Bernardini P.Bernardini P.
Asorey H.G.Asorey H.G.
Capdevielle J.N.Capdevielle J.N.
Dos Anjos J.C.Dos Anjos J.C.
Barbosa H.M.J.Barbosa H.M.J.
Chauvin J.Chauvin J.
Arqueros F.Arqueros F.
Arneodo F.Arneodo F.
Bergmann T.Bergmann T.
Becker B.R.Becker B.R.
Cordier A.Cordier A.
Álvarez C.Álvarez C.
de Carvalho L.A.de Carvalho L.A.
Camin D.V.Camin D.V.
Bleve C.Bleve C.
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Aramo C.Aramo C.
Deligny O.Deligny O.
Alvarez-Mu˜niz J.Alvarez-Mu˜niz J.