作者
Alexander Aab, Pedro Abreu, MARCO Aglietta, Eun-Joo Ahn, Imen Al Samarai, Ivone Freire da Mota Albuquerque, Ingomar Allekotte, Jeff Allen, Patrick Allison, Alejandro Almela, J Alvarez Castillo, J Alvarez-Muniz, R Alves Batista, M Ambrosio, A Aminaei, L Anchordoqui, S Andringa, C Aramo, VM Aranda, F Arqueros, H Asorey, P Assis, J Aublin, M Ave, M Avenier, G Avila, N Awal, AM Badescu, KB Barber, J Baeuml, C Baus, JJ Beatty, KH Becker, JA Bellido, C Berat, Mario Edoardo Bertaina, X Bertou, PL Biermann, P Billoir, S Blaess, M Blanco, C Bleve, H Bluemer, M Boháčová, D Boncioli, C Bonifazi, Raffaella Bonino, N Borodai, J Brack, I Brancus, A Bridgeman, P Brogueira, WC Brown, P Buchholz, A Bueno, S Buitink, M Buscemi, KS Caballero-Mora, B Caccianiga, L Caccianiga, M Candusso, L Caramete, R Caruso, ANTONELLA Castellina, G Cataldi, L Cazon, Rosanna Cester, AG Chavez, Andrea Chiavassa, JA Chinellato, J Chudoba, M Cilmo, RW Clay, G Cocciolo, R Colalillo, A Coleman, L Collica, MR Coluccia, R Conceicao, F Contreras, MJ Cooper, A Cordier, S Coutu, CE Covault, J Cronin, A Curutiu, R Dallier, B Daniel, S Dasso, K Daumiller, BR Dawson, RM De Almeida, M De Domenico, SJ De Jong, JRT de Mello Neto, I De Mitri, J De Oliveira, V De Souza, L Del Peral, O Deligny, H Dembinski, N Dhital, C Di Giulio, A Di Matteo, JC Diaz, ML Díaz Castro, F Diogo, C Dobrigkeit, W Docters, JC D’Olivo, A Dorofeev, Q Dorosti Hasankiadeh, MT Dova, J Ebr, R Engel, M Erdmann, M Erfani, CO Escobar, J Espadanal, A Etchegoyen, P Facal San Luis, H Falcke, K Fang, G Farrar, AC Fauth, N Fazzini, AP Ferguson, M Fernandes, B Fick, JM Figueira, A Filevich, A Filipčič, BD Fox, O Fratu, U Fröhlich, B Fuchs, T Fujii, R Gaior, B García, ST Garcia Roca, D Garcia-Gamez, D Garcia-Pinto, G Garilli, A Gascon Bravo, F Gate, H Gemmeke, PL Ghia, U Giaccari, M Giammarchi, M Giller
发表日期
2014/12/31
期刊
Physical Review D
卷号
90
期号
12
页码范围
122005
出版商
American Physical Society
简介
We report a study of the distributions of the depth of maximum, X max, of extensive air-shower profiles with energies above 1 0 17.8 eV 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 X max measurement and provide parametrizations thereof as a function of energy. The energy dependence of the mean and standard deviation of the X max 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.
引用总数
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