J. Cronin
University of Chicago
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Featured researches published by J. Cronin.
Physical Review Letters | 2010
J. Abraham; P. Abreu; M. Aglietta; D. Allard; I. Allekotte; Jeffrey C. Allen; M. Ambrosio; Luis A. Anchordoqui; S. Andringa; A. Anzalone; C. Aramo; E. Arganda; K. Arisaka; F. Arqueros; H. Asorey; P. Assis; J. Aublin; M. Ave; G. Avila; D. Badagnani; M. Balzer; B. M. Baughman; P. Bauleo; C. Berat; T. Bergmann; P. Billoir; O. Blanch-Bigas; F.J. Blanco; M. Blanco; C. Bleve
We describe the measurement of the depth of maximum, Xmax, of the longitudinal development of air showers induced by cosmic rays. Almost four thousand events above 10^18 eV observed by the fluorescence detector of the Pierre Auger Observatory in coincidence with at least one surface detector station are selected for the analysis. The average shower maximum was found to evolve with energy at a rate of (106 +35/-21) g/cm^2/decade below 10^(18.24 +/- 0.05) eV and (24 +/- 3) g/cm^2/decade above this energy. The measured shower-to-shower fluctuations decrease from about 55 to 26 g/cm^2. The interpretation of these results in terms of the cosmic ray mass composition is briefly discussed.
Physical Review Letters | 2000
T. Abu-Zayyad; K. Belov; D. J. Bird; Joseph H. Boyer; Z. Cao; M. Catanese; G. F. Chen; R. W. Clay; C. E. Covault; J. Cronin; Hongyue Dai; B. R. Dawson; J. W. Elbert; B. E. Fick; L. Fortson; J. W. Fowler; K. G. Gibbs; Margaret Anderson Kennedy Glasmacher; K. D. Green; Y. Ho; Alan Guoming Huang; C. C. Jui; Matthew John Kidd; D. Kieda; B. C. Knapp; S. Ko; Christian Gronhoj Larsen; Wei-Po Lee; E. C. Loh; E. Mannel
The average mass composition of cosmic rays with primary energies between
Astroparticle Physics | 1998
K.S. Capelle; J. Cronin; G. Parente; E. Zas
10^{17}
Astroparticle Physics | 1999
Margaret Anderson Kennedy Glasmacher; Michael Anthony Catanese; M. C. Chantell; C. E. Covault; J. Cronin; B. E. Fick; L. Fortson; J. W. Fowler; K. D. Green; D. Kieda; J. Matthews; B. J. Newport; D. Nitz; R. A. Ong; S. Oser; D. Sinclair; J. C. van der Velde
eV and
arXiv: Astrophysics | 2005
J. Cronin
10^{18}
Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment | 1994
A. Borione; C. E. Covault; J. Cronin; B. E. Fick; K. G. Gibbs; H. A. Krimm; N. C. Mascarenhas; T. A. McKay; D. Müller; B. J. Newport; R. A. Ong; L. J. Rosenberg; H. Sanders; Michael Anthony Catanese; D. Ciampa; K. D. Green; Jeffrey K. Kolodziejczak; J. Matthews; D. Nitz; D. Sinclair; J. C. van der Velde
eV has been studied using a hybrid detector consisting of the High Resolution Flys Eye (HiRes) prototype and the MIA muon array. Measurements have been made of the change in the depth of shower maximum,
Astroparticle Physics | 2002
Simon P. Swordy; L. Fortson; J. A. Hinton; J.R. Hörandel; J. Knapp; C. Pryke; T. Shibata; S. P. Wakely; Z. Cao; Michael L. Cherry; S. Coutu; J. Cronin; R. Engel; J. W. Fowler; K.-H. Kampert; J. Kettler; D. Kieda; J. Matthews; S. A. Minnick; A. A. Moiseev; D. Muller; Markus Roth; A. Sill; G. Spiczak
X_{max}
Physical Review Letters | 1997
M. C. Chantell; C. E. Covault; J. Cronin; B. E. Fick; L. Fortson; J. W. Fowler; K. D. Green; B. J. Newport; R. A. Ong; S. Oser; M. Catanese; Margaret Anderson Kennedy Glasmacher; J. Matthews; D. Nitz; D. Sinclair; J. C. van der Velde; D. Kieda
, and in the change in the muon density at a fixed core location,
Astroparticle Physics | 1999
Margaret Anderson Kennedy Glasmacher; Michael Anthony Catanese; M. C. Chantell; C. E. Covault; J. Cronin; B. E. Fick; L. Fortson; J. W. Fowler; K. D. Green; D. Kieda; J. Matthews; B. J. Newport; D. Nitz; R. A. Ong; S. Oser; D. Sinclair; J. C. van der Velde
\rho_\mu(600m)
The Astrophysical Journal | 1998
A. Borione; Michael Anthony Catanese; M. C. Chantell; C. E. Covault; J. Cronin; B. E. Fick; L. Fortson; J. W. Fowler; Margaret Anderson Kennedy Glasmacher; K. D. Green; D. Kieda; J. Matthews; B. J. Newport; D. Nitz; R. A. Ong; S. Oser; D. Sinclair; J. C. van der Velde
, as a function of energy. The composition has also been evaluated in terms of the combination of
