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QUBIC I: Overview and Science Program
(IOP Publishing, 2021-10)
The Q & U Bolometric Interferometer for Cosmology (QUBIC) is a novel kind of polarimeter optimized for the measurement of the B-mode polarization of the Cosmic Microwave Background (CMB), which is one of the major challenges ...
Search for ultra-high energy photons with the AMIGA muon detector
(2018-02-09)
Los rayos cósmicos (E > 1014 eV) son conocidos desde hace más de 70 años y, sin embargo, su origen sigue siendo un misterio. Del mismo modo, la posibilidad de una componente fotónica de muy alta energía en el flujo de ...
QUBIC VIII: Optical design and performance
(IOP Publishing, 2021-10)
The Q and U Bolometric Interferometer for Cosmology (QUBIC) is a ground-based experiment that aims to detect B-mode polarization anisotropies [1] in the CMB at angular scales around the â.,"≃100 recombination peak. Systematic ...
QUBIC V: Cryogenic system design and performance
(IOP Publishing, 2021-10)
Current experiments aimed at measuring the polarization of the Cosmic Microwave Background (CMB) use cryogenic detector arrays with cold optical systems to boost their mapping speed. For this reason, large volume cryogenic ...
Measurement of the average shape of longitudinal profiles of cosmic-ray air showers at the Pierre Auger Observatory
(IOP Publishing, 2019-03)
The profile of the longitudinal development of showers produced by ultra-highenergy cosmic rays carries information related to the interaction properties of the primary particles with atmospheric nuclei. In this work, we ...
Identifying clouds over the Pierre Auger Observatory using infrared satellite data
(Elsevier, 2013-10)
We describe a new method of identifying night-time clouds over the Pierre Auger Observatory using infrared data from the Imager instruments on the GOES-12 and GOES-13 satellites. We compare cloud identifications resulting ...
Search for photons above 10^18 eV with the hybrid detector of the Pierre Auger Observatory
(IOP Publishing, 2017-04)
A search for ultra-high energy photons with energies above 1 EeV is performedusing nine years of data collected by the Pierre Auger Observatory in hybrid operation mode.An unprecedented separation power between photon and ...
Interpretation of the depths of maximum of extensive air showers measured by the Pierre Auger Observatory
(IOP Publishing, 2013-02-19)
To interpret the mean depth of cosmic ray air shower maximum and its dispersion, we parametrize those two observables as functions of the first two moments of the ln A distribution. We examine the goodness of this simple ...
Probing the origin of ultra-high-energy cosmic rays with neutrinos in the EeV energy range using the Pierre Auger Observatory
(IOP Publishing, 2019-10)
Neutrinos with energies above 1017 eV are detectable with the Surface Detector Array of the Pierre Auger Observatory. The identification is efficiently performed for neutrinos of all flavors interacting in the atmosphere ...
QUBIC VII: The feedhorn-switch system of the technological demonstrator
(IOP Publishing, 2021-10)
We present the design, manufacturing and performance of the horn-switch system developed for the technological demonstrator of QUBIC (the Q&U Bolometric Interferometer for Cosmology). This system consists of 64 back-to-back ...