An upper limit to the photon fraction in cosmic rays above 1019eV from the Pierre Auger Observatory
Instance of
Author
Daniel Badagnani
Alejandro Veiga
Albano C Meli
Eric Armengaud
Ezio Menichetti
Matías Tueros
Ernesto Kemp
Raúl Gómez-Herrero
Tonia M. Venters
Sandra Parlati
Germán Ros Magán
Oleg Kalashev
A. Geranios
Hernan Asorey
Thomas McCauley
Hans Dembinski
Michael Prouza
Viviana Scherini
James Matthews
Piotr Homola
Raffaella Bonino
Inés Valiño
Francesco Salamida
Alessio Gorgi
Jaime Rosado
Petr Schovánek
Enrique Zas
Domenico Torresi
Fernando Arqueros
Dušan Mandát
Gonzalo Parente
Miroslav Palatka
Paul M. Mantsch
Michael Unger
Marcos Santander
Carla Aramo
Fabian Schüssler
Dalibor Nosek
Roberto Mussa
Arnulfo Zepeda
Miroslav Pech
Walter Fulgione
Antonella Castellina
Arturo Fernandez Tellez
Stephane Coutu
Vincenzo Rizi
Marco Aglietta
Guenter Sigl
Pasquale Blasi
Sergio Petrera
