Observation of the spectrum with the AMIGA infill

D. RAVIGNANI; ASOREY, H.; D. MELO; DE LA VEGA, G.; A. ETCHEGOYEN; A. FERRERO; GAMARRA, R.; GARCIA, B.; M. JOSEBACHUILI; SANCHEZ, F.; I. SIDELNIKC; A. TAPIA CASANOVA; B. WUNDHEILER

Otro; Publicacion Interna Observatorio Pierre Auger (GAP-NOTE); 2011

Observatorio Pierre Auger

In this note we present the spectrum measured with the AMIGA infill featuring the no observation of a second knee break from 10^17.2 eV. The event reconstruction, constant intensity cut procedure, energy calibration and exposure calculation used to obtain the spectrum are described. A few new ideas were introduced along the way including the extension of the spectrum down in energy by cutting at a zenith angle of 30◦ and the exclusion from the spectrum of events falling less than 100 m from a station.