M. Aglietta
University of Turin
259Publications
40H-index
6,613Citations
Publications 259
Published on Apr 24, 2019in Frontiers in Astronomy and Space Sciences
A. Aab19
Estimated H-index: 19
,
N. Borodai29
Estimated H-index: 29
+ 389 AuthorsB. Daniel21
Estimated H-index: 21
An overview of the multi-messenger capabilities of the Pierre Auger Observatory is presented. The techniques and performance of searching for Ultra-High Energy neutrinos, photons and neutrons are described. Some of the most relevant results are reviewed, such as stringent upper bounds that were placed to a flux of diffuse cosmogenic neutrinos and photons, bounds placed on neutrinos emitted from compact binary mergers that were detected by LIGO and Virgo during their first and second observing ru...
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Published on Mar 7, 2019in Journal of Cosmology and Astroparticle Physics 5.13
A. Aab1
Estimated H-index: 1
(Fermilab),
P. Abreu46
Estimated H-index: 46
+ 15 AuthorsH. Falcke60
Estimated H-index: 60
The profile of the longitudinal development of showers produced by ultra-high energy cosmic rays carries information related to the interaction properties of the primary particles with atmospheric nuclei. In this work, we present the first measurement of the average shower profile in traversed atmospheric depth at the Pierre Auger Observatory. The shapes of profiles are well reproduced by the Gaisser-Hillas parametrization within the range studied, for E>1017.8 eV . A detailed analysis of the sy...
Published on Jan 23, 2019in Physical Review D 4.39
A. Aab19
Estimated H-index: 19
,
F. Contreras31
Estimated H-index: 31
+ 387 AuthorsT. A. Harrison22
Estimated H-index: 22
The determination of the primary energy of extensive air showers using the fluorescence detection technique requires an estimation of the energy carried away by particles that do not deposit all their energy in the atmosphere. This estimation is typically made using Monte Carlo simulations and thus depends on the assumed primary particle mass and on model predictions for neutrino and muon production. In this work we present a new method to obtain the invisible energy from events detected by the ...
Published on Nov 13, 2018in The Astrophysical Journal 6.63
A. Aab10
Estimated H-index: 10
P. Abreu46
Estimated H-index: 46
(Instituto Superior Técnico)
+ 373 AuthorsG. A. Anastasi11
Estimated H-index: 11
We present a detailed study of the large-scale anisotropies of cosmic rays with energies above 4 EeV measured using the Pierre Auger Observatory. For the energy bins [4, 8] EeV and E >= 8 EeV, the most significant signal is a dipolar modulation in R.A. at energies above 8 EeV, as previously reported. In this paper we further scrutinize the highest-energy bin by splitting it into three energy ranges. We find that the amplitude of the dipole increases with energy above 4 EeV. The growth can be fit...
Published on Oct 16, 2018in Journal of Cosmology and Astroparticle Physics 5.13
A. Aab10
Estimated H-index: 10
P. Abreu46
Estimated H-index: 46
(University of Lisbon)
+ 391 AuthorsG. A. Anastasi11
Estimated H-index: 11
With the Auger Engineering Radio Array (AERA) of the Pierre Auger Observatory, we have observed the radio emission from 561 extensive air showers with zenith angles between 60 degrees and 84 degrees. In contrast to air showers with more vertical incidence, these inclined air showers illuminate large ground areas of several km(2) with radio signals detectable in the 30 to 80 MHz band. A comparison of the measured radio-signal amplitudes with Monte Carlo simulations of a subset of 50 events for wh...
P. Homola29
Estimated H-index: 29
,
F. Contreras31
Estimated H-index: 31
+ 390 AuthorsM. Giammarchi42
Estimated H-index: 42
Data taken at the Pierre Auger Observatory are used to search for air showers initiated by ultra-high energy (UHE) photons. Results of searches are reported from hybrid observations where events are measured with both fluorescence and array detectors. Addition- ally, a more stringent test of the photon fluxes predicted with energies above 10 19 eV is made using a larger data set measured using only the surface detectors of the observatory.
Published on Feb 2, 2018in The Astrophysical Journal 6.63
A. Aab10
Estimated H-index: 10
P. Abreu46
Estimated H-index: 46
(University of Lisbon)
+ 389 AuthorsL. Anchordoqui3
Estimated H-index: 3
(Lehman College)
A new analysis of the data set from the Pierre Auger Observatory provides evidence for anisotropy in the arrival directions of ultra-high-energy cosmic rays on an intermediate angular scale, which is indicative of excess arrivals from strong, nearby sources. The data consist of 5514 events above 20 EeV with zenith angles up to 80 degrees. recorded before 2017 April 30. Sky models have been created for two distinct populations of extragalactic gamma-ray emitters: active galactic nuclei from the s...
Published on Nov 30, 2017in The Astrophysical Journal 6.63
A. Albert29
Estimated H-index: 29
,
Michel André22
Estimated H-index: 22
(Polytechnic University of Catalonia)
Estimated H-index: 40
(Aix-Marseille University)
The Advanced LIGO and Advanced Virgo observatories recently discovered gravitational waves from a binary neutron star inspiral. A short gamma-ray burst (GRB) that followed the merger of this binary was also recorded by the Fermi Gamma-ray Burst Monitor (Fermi-GBM), and the Anti-Coincidence Shield for the Spectrometer for the International Gamma-Ray Astrophysics Laboratory (INTEGRAL), indicating particle acceleration by the source. The precise location of the event was determined by optical detec...
Published on Apr 20, 2017in Journal of Cosmology and Astroparticle Physics 5.13
A. Aab10
Estimated H-index: 10
P. Abreu46
Estimated H-index: 46
(University of Lisbon)
+ 394 AuthorsG. A. Anastasi3
Estimated H-index: 3
(Istituto Nazionale di Fisica Nucleare)
We present a combined fit of a simple astrophysical model of UHECR sources to both the energy spectrum and mass composition data measured by the Pierre Auger Observatory. The fit has been performed for energies above $5 \cdot 10^{18}$ eV, i.e.~the region of the all-particle spectrum above the so-called "ankle" feature. The astrophysical model we adopted consists of identical sources uniformly distributed in a comoving volume, where nuclei are accelerated through a rigidity-dependent mechanism. T...
Published on Dec 30, 2016in Physical Review D 4.39
A. Aab19
Estimated H-index: 19
(Folkwang University of the Arts),
P. Abreu46
Estimated H-index: 46
(University of Lisbon)
+ 409 AuthorsM. Ambrosio3
Estimated H-index: 3
(Istituto Nazionale di Fisica Nucleare)
On September 14, 2015 the Advanced LIGO detectors observed their first gravitational wave (GW) transient GW150914. This was followed by a second GW event observed on December 26, 2015. Both events were inferred to have arisen from the merger of black holes in binary systems. Such a system may emit neutrinos if there are magnetic fields and disk debris remaining from the formation of the two black holes. With the surface detector array of the Pierre Auger Observatory we can search for neutrinos w...
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