INVESTIGADORES
TUEROS Matias Jorge
artículos
Título:
Results of a self-triggered prototype system for radio-detection of extensive air showers at the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION (AUTOR 434 DE 474); M. TUEROS
Revista:
JOURNAL OF INSTRUMENTATION
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2012 vol. 7 p. 11023 - 11050
ISSN:
1748-0221
Resumen:
We describe the experimental setup and the results
of RAuger, a small radio-antenna array, consisting of three fully
autonomous and self-triggered radio-detection stations, installed close
to the center of the Surface Detector (SD) of the Pierre Auger
Observatory in Argentina. The setup has been designed for the detection
of the electric field strength of air showers initiated by ultra-high
energy cosmic rays, without using an auxiliary trigger from another
detection system. Installed in December 2006, RAuger was terminated in
May 2010 after 65 registered coincidences with the SD. The sky map in
local angular coordinates (i.e., zenith and azimuth angles) of these
events reveals a strong azimuthal asymmetry which is in agreement with a
mechanism dominated by a geomagnetic emission process. The correlation
between the electric field and the energy of the primary cosmic ray is
presented for the first time, in an energy range covering two orders of
magnitude between 0.1 EeV and 10 EeV. It is demonstrated that this setup
is relatively more sensitive to inclined showers, with respect to the
SD. In addition to these results, which underline the potential of the
radio-detection technique, important information about the general
behavior of self-triggering radio-detection systems has been obtained.
In particular, we will discuss radio self-triggering under varying local
electric-field conditions.