INVESTIGADORES
TUEROS Matias Jorge
artículos
Título:
Antennas for the detection of radio emission pulses from cosmic-ray induced air showers at the Pierre Auger Observatory
Autor/es:
THE PIERRE AUGER COLLABORATION (AUTOR 404 DE 447); M. TUEROS
Revista:
JOURNAL OF INSTRUMENTATION
Editorial:
IOP PUBLISHING LTD
Referencias:
Lugar: Londres; Año: 2012 vol. 7 p. 10011 - 10061
ISSN:
1748-0221
Resumen:
The Pierre Auger Observatory is exploring the potential of the radio
detection technique to study extensive air showers induced by ultra-high
energy cosmic rays. The Auger Engineering Radio Array (AERA) addresses
both technological and scientific aspects of the radio technique. A
first phase of AERA has been operating since September 2010 with
detector stations observing radio signals at frequencies between 30 and
80 MHz. In this paper we present comparative studies to identify and
optimize the antenna design for the final configuration of AERA
consisting of 160 individual radio detector stations. The transient
nature of the air shower signal requires a detailed description of the
antenna sensor. As the ultra-wideband reception of pulses is not widely
discussed in antenna literature, we review the relevant antenna
characteristics and enhance theoretical considerations towards the
impulse response of antennas including polarization effects and multiple
signal reflections. On the basis of the vector effective length we
study the transient response characteristics of three candidate antennas
in the time domain. Observing the variation of the continuous galactic
background intensity we rank the antennas with respect to the noise
level added to the galactic signal.