Regresar

Astrophysical interpretation of Pierre Auger Observatory measurements of the UHECR energy spectrum and mass composition

Abstract:

We present a combined fit of a simple astrophysical model of UHECR sources to both the energy spectrum and mass composition data measured by the Pierre Auger Observatory. The fit has been performed for energies above 5 EeV, i.e. the region of the all-particle spectrum above the so-called "ankle"' feature. The astrophysical model we adopted consists of identical sources uniformly distributed in a comoving volume, where nuclei are accelerated with a rigidity-dependent mechanism. The fit results suggest sources characterized by relatively low maximum injection energies and hard spectral indices. The impact of various systematic uncertainties on the above result is discussed.

Año de publicación:

2017

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Conference Object

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Ciencia planetaria
    • Ciencia planetaria

    Áreas temáticas:

    • Cuerpos y fenómenos celestes específicos

    Contribuidores:

    Albuquerque I.F.M.Albuquerque I.F.M.
    Buchholz P.Buchholz P.
    Abreu P.Abreu P.
    Aublin J.Aublin J.
    Boncioli D.Boncioli D.
    De Oliveira J.De Oliveira J.
    Caruso R.Caruso R.
    Neto J.R.T.d.M.Neto J.R.T.d.M.
    de Jong S.J.de Jong S.J.
    Castellina A.Castellina A.
    Botti A.M.Botti A.M.
    Daumiller K.Daumiller K.
    Dallier R.Dallier R.
    Chudoba J.Chudoba J.
    Diogo F.Diogo F.
    Becker K.H.Becker K.H.
    Briechle F.L.Briechle F.L.
    Coutu S.Coutu S.
    Andringa S.Andringa S.
    Cronin J.W.Cronin J.W.
    Buscemi M.Buscemi M.
    Matteo A.D.Matteo A.D.
    Aab A.Aab A.
    Almela A.Almela A.
    Covault C.E.Covault C.E.
    Cazón L.Cazón L.
    Blaess S.G.Blaess S.G.
    Biermann P.L.Biermann P.L.
    Colalillo R.Colalillo R.
    Allekotte I.Allekotte I.
    Aglietta M.Aglietta M.
    De Almeida R.M.De Almeida R.M.
    Conceiç˜ao R.Conceiç˜ao R.
    Anastasi G.A.Anastasi G.A.
    Cooper M.J.Cooper M.J.
    Mary L. Díaz CastroMary L. Díaz Castro
    Javier GarciaJavier Garcia
    Chiavassa A.Chiavassa A.
    Billoir P.Billoir P.
    Coluccia M.R.Coluccia M.R.
    Bonifazi C.Bonifazi C.
    Allison P.Allison P.
    Blazek J.Blazek J.
    Di Giulio C.Di Giulio C.
    Bellido J.A.Bellido J.A.
    Brancus I.Brancus I.
    Avila G.Avila G.
    Chavez A.G.Chavez A.G.
    Collica L.Collica L.
    Arsene N.Arsene N.
    del Peral L.del Peral L.
    Dasso S.Dasso S.
    Anchordoqui L.A.Anchordoqui L.A.
    Chinellato J.A.Chinellato J.A.
    Buitink S.Buitink S.
    Caramete L.Caramete L.
    Caballero-Mora K.S.Caballero-Mora K.S.
    Bertou X.Bertou X.
    Borodai N.Borodai N.
    Dawson B.R.Dawson B.R.
    Cester R.Cester R.
    Bohã̌cov́a M.Bohã̌cov́a M.
    Mitri I.D.Mitri I.D.
    Ambrosio M.Ambrosio M.
    Andrada B.Andrada B.
    Blanco A.Blanco A.
    Brack J.Brack J.
    Biteau J.Biteau J.
    Daniel B.Daniel B.
    Badescu A.M.Badescu A.M.
    Coleman A.Coleman A.
    Contreras F.Contreras F.
    Beatty J.J.Beatty J.J.
    Souza V.d.Souza V.d.
    Assis P.Assis P.
    Clay R.W.Clay R.W.
    Berat C.Berat C.
    Asorey H.G.Asorey H.G.
    Bridgeman A.Bridgeman A.
    Ahn E.J.Ahn E.J.
    Caccianiga L.Caccianiga L.
    Bueno A.Bueno A.
    Caccianiga B.Caccianiga B.
    Dobrigkeit C.Dobrigkeit C.
    Balaceanu A.Balaceanu A.
    De Mauro G.De Mauro G.
    Baus C.Baus C.
    Cancio A.Cancio A.
    Canfora F.Canfora F.
    Arqueros F.Arqueros F.
    Bretz T.Bretz T.
    Al Samarai I.Al Samarai I.
    Alvarez Castillo J.Alvarez Castillo J.
    Bleve C.Bleve C.
    D’Amico S.D’Amico S.
    Debatin J.Debatin J.
    Cataldi G.Cataldi G.
    Bertaina M.E.Bertaina M.E.
    Aramo C.Aramo C.
    Deligny O.Deligny O.
    Alvarez-Mu˜niz J.Alvarez-Mu˜niz J.