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Depth of maximum of air-shower profiles at the Pierre Auger Observatory. I. Measurements at energies above 1017.8eV

Abstract:

We report a study of the distributions of the depth of maximum, Xmax, of extensive air-shower profiles with energies above 1017.8eV as observed with the fluorescence telescopes of the Pierre Auger Observatory. The analysis method for selecting a data sample with minimal sampling bias is described in detail as well as the experimental cross-checks and systematic uncertainties. Furthermore, we discuss the detector acceptance and the resolution of the Xmax measurement and provide parametrizations thereof as a function of energy. The energy dependence of the mean and standard deviation of the Xmax distributions are compared to air-shower simulations for different nuclear primaries and interpreted in terms of the mean and variance of the logarithmic mass distribution at the top of the atmosphere.

Año de publicación:

2014

Keywords:

    Fuente:

    scopusscopus

    Tipo de documento:

    Article

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Física de partículas

    Áreas temáticas:

    • Física
    • Cuerpos y fenómenos celestes específicos
    • Astronomía y ciencias afines

    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.
    Avenier M.Avenier M.
    De Oliveira J.De Oliveira J.
    Cocciolo G.Cocciolo G.
    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.
    Bonino R.Bonino R.
    Daumiller K.Daumiller K.
    Ave M.Ave M.
    Bäuml J.Bäuml J.
    Barber K.B.Barber K.B.
    Dallier R.Dallier R.
    Chudoba J.Chudoba J.
    Becker K.H.Becker K.H.
    Coutu S.Coutu S.
    Blanco M.Blanco M.
    Andringa S.Andringa S.
    Cronin J.W.Cronin J.W.
    Buscemi M.Buscemi M.
    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.
    Candusso M.Candusso M.
    Cooper M.J.Cooper M.J.
    Mary L. Díaz CastroMary L. Díaz Castro
    Javier GarciaJavier Garcia
    Chiavassa A.Chiavassa A.
    Billoir P.Billoir P.
    Aminaei A.Aminaei A.
    Coluccia M.R.Coluccia M.R.
    Bonifazi C.Bonifazi C.
    Allison P.Allison P.
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    Avila G.Avila G.
    Chavez A.G.Chavez A.G.
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    Brown W.C.Brown W.C.
    del Peral L.del Peral L.
    Dasso S.Dasso S.
    Anchordoqui L.A.Anchordoqui L.A.
    Chinellato J.A.Chinellato J.A.
    Bl̈umer H.Bl̈umer H.
    Buitink S.Buitink S.
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    Caballero-Mora K.S.Caballero-Mora K.S.
    Bertou X.Bertou X.
    Borodai N.Borodai N.
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    Cester R.Cester R.
    Bohã̌cov́a M.Bohã̌cov́a M.
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    Ambrosio M.Ambrosio M.
    Domenico M.D.Domenico M.D.
    Batista R.A.Batista R.A.
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    Coleman A.Coleman A.
    Contreras F.Contreras F.
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    Souza V.d.Souza V.d.
    Curutiu A.Curutiu A.
    Assis P.Assis P.
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    Clay R.W.Clay R.W.
    Berat C.Berat C.
    Asorey H.G.Asorey H.G.
    Bridgeman A.Bridgeman A.
    Awal N.Awal N.
    Ahn E.J.Ahn E.J.
    Caccianiga L.Caccianiga L.
    Bueno A.Bueno A.
    Caccianiga B.Caccianiga B.
    Baus C.Baus C.
    Arqueros F.Arqueros F.
    Cordier A.Cordier A.
    Cilmo M.Cilmo M.
    Al Samarai I.Al Samarai I.
    Brogueira P.Brogueira P.
    Alvarez Castillo J.Alvarez Castillo J.
    Bleve C.Bleve C.
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    Bertaina M.E.Bertaina M.E.
    Aramo C.Aramo C.
    Deligny O.Deligny O.
    Alvarez-Mu˜niz J.Alvarez-Mu˜niz J.