scholarly journals Limit on the diffuse flux of ultrahigh energy tau neutrinos with the surface detector of the Pierre Auger Observatory

2009 ◽  
Vol 79 (10) ◽  
Author(s):  
J. Abraham ◽  
P. Abreu ◽  
M. Aglietta ◽  
C. Aguirre ◽  
E. J. Ahn ◽  
...  
Keyword(s):  
Pierre Auger Observatory ◽  
Ultrahigh Energy ◽  
Diffuse Flux ◽  
Tau Neutrinos ◽  
Surface Detector

scholarly journals Ultrahigh Energy Neutrinos at the Pierre Auger Observatory

2013 ◽  
Vol 2013 ◽  
pp. 1-18 ◽  
Author(s):  
P. Abreu ◽  
M. Aglietta ◽  
M. Ahlers ◽  
E. J. Ahn ◽  
I. F. M. Albuquerque ◽  
...  
Keyword(s):  
Pierre Auger Observatory ◽  
Detector Array ◽  
Ultrahigh Energy ◽  
Astroparticle Physics ◽  
Air Showers ◽  
Diffuse Flux ◽  
The Earth ◽  
Surface Detector ◽  
A Priority

The observation of ultrahigh energy neutrinos (UHEνs) has become a priority in experimental astroparticle physics. UHEνs can be detected with a variety of techniques. In particular, neutrinos can interact in the atmosphere (downward-goingν) or in the Earth crust (Earth-skimmingν), producing air showers that can be observed with arrays of detectors at the ground. With the surface detector array of the Pierre Auger Observatory we can detect these types of cascades. The distinguishing signature for neutrino events is the presence of very inclined showers produced close to the ground (i.e., after having traversed a large amount of atmosphere). In this work we review the procedure and criteria established to search for UHEνs in the data collected with the ground array of the Pierre Auger Observatory. This includes Earth-skimming as well as downward-going neutrinos. No neutrino candidates have been found, which allows us to place competitive limits to the diffuse flux of UHEνs in the EeV range and above.

scholarly journals Upper Limit on the Diffuse Flux of Ultrahigh Energy Tau Neutrinos from the Pierre Auger Observatory

2008 ◽  
Vol 100 (21) ◽  
Author(s):  
J. Abraham ◽  
P. Abreu ◽  
M. Aglietta ◽  
C. Aguirre ◽  
D. Allard ◽  
...  
Keyword(s):  
Pierre Auger Observatory ◽  
Ultrahigh Energy ◽  
Diffuse Flux ◽  
Tau Neutrinos ◽  
Upper Limit

scholarly journals Atmospheric Monitoring at a Cosmic Ray Observatory - a long-lasting endeavour

2019 ◽  
Vol 197 ◽  
pp. 02001
Author(s):  
Bianca Keilhauer
Keyword(s):  
Cosmic Rays ◽  
Cosmic Ray ◽  
Extensive Air Showers ◽  
Pierre Auger Observatory ◽  
Ultrahigh Energy ◽  
Atmospheric Conditions ◽  
Air Showers ◽  
Atmospheric Monitoring ◽  
Surface Detector ◽  
Planning And Construction

The Pierre Auger Observatory for detecting ultrahigh energy cosmic rays has been founded in 1999. After a main planning and construction phase of about five years, the regular data taking started in 2004, but it took another four years until the full surface detector array was deployed. In parallel to the main detectors of the Observatory, a comprehensive set of instruments for monitoring the atmospheric conditions above the array was developed and installed as varying atmospheric conditions influence the development and detection of extensive air showers. The multitude of atmospheric monitoring installations at the Pierre Auger Observatory will be presented as well as the challenges and efforts to run such instruments for several decades.

scholarly journals LIMIT ON UHE NEUTRINO FLUXES FROM THE PIERRE AUGER OBSERVATORY

2013 ◽  
Vol 53 (A) ◽  
pp. 756-759
Author(s):  
S. Maldera
Keyword(s):  
Point Source ◽  
High Energy ◽  
Time Structure ◽  
Pierre Auger Observatory ◽  
Tau Leptons ◽  
Ultra High Energy ◽  
Tau Neutrinos ◽  
Surface Detector ◽  
Recorded Data ◽  
Neutrino Fluxes

The surface detector of the Pierre Auger Observatory is sensitive to Ultra High Energy (UHE) neutrinos. Neutrinos of all flavors can interact in the atmosphere producing inclined showers near the ground. Moreover, ultra high energy Earth-skimming tau neutrinos can be observed through the detection of showers induced by the decay of tau leptons created by interactions in the Earth’s crust. In both cases, neutrino showers can be identified through the time structure of the signals in the surface detector stations. Two sets of identification criteria have been designed to search for down-going and up-going neutrinos in the recorded data, with no candidates found. We will discuss the identification criteria used, and we will present the corresponding limits on the diffuse and point source neutrino fluxes.

scholarly journals Improved limit to the diffuse flux of ultrahigh energy neutrinos from the Pierre Auger Observatory

2015 ◽  
Vol 91 (9) ◽  
Author(s):  
A. Aab ◽  
P. Abreu ◽  
M. Aglietta ◽  
E. J. Ahn ◽  
I. Al Samarai ◽  
...  
Keyword(s):  
Pierre Auger Observatory ◽  
Ultrahigh Energy ◽  
Diffuse Flux

scholarly journals Atmospheric Electricity Studies at the Pierre Auger Observatory: Signal Comparisons between Lightning and Cosmic Ray Events

2019 ◽  
Vol 210 ◽  
pp. 05007
Author(s):  
Kevin-Druis Merenda ◽  
Keyword(s):  
Task Force ◽  
Atmospheric Electricity ◽  
Cosmic Ray ◽  
Pierre Auger Observatory ◽  
Fluorescence Detector ◽  
Lightning Strikes ◽  
Transient Luminous Events ◽  
The World ◽  
Surface Detector ◽  
Atmospheric Phenomena

The research horizons of the Pierre Auger Cosmic-Ray Observatory widened when the collaboration found exotic (atmospheric) phenomena in both its Fluorescence Detector (FD) and Surface Detector (SD). The Cosmology and Geophysics task force of the Auger Collaboration focused some of its attention on these highly energetic events, which are correlated to some of the most intense convective thunderstorm systems in the world. In this proceeding, we compare the signal of these exotic events and the signal of cosmic rays, as seen in the FD and the SD. The FD has triggered on numerous transient luminous events, dubbed “elves" since their first observation in 2005. The SD observed peculiar events with radially expanding footprints, which are correlated with lightning strikes reconstructed by the World Wide Lightning Location Network (WWLLN). The traced signals of both of these atmospheric events last longer in time than cosmic ray signals. The footprints are much larger; typically more SD stations (or more FD pixels) contribute to the observations.

scholarly journals Ultrahigh-Energy multi-messengers at the Pierre Auger Observatory

2019 ◽  
Vol 209 ◽  
pp. 01053
Author(s):  
Francisco Pedreira
Keyword(s):  
Gravitational Waves ◽  
High Energy ◽  
Pierre Auger Observatory ◽  
High Energy Particle ◽  
Ultra High Energy ◽  
Ultrahigh Energy ◽  
Particle Detector ◽  
Energy Particle ◽  
Binary Mergers ◽  
The Universe

The study of correlations between observations of different messengers from extreme sources of the Universe has emerged as an outstanding way to make progress in astrophysics. The Pierre Auger Observatory is capable of significant contributions as an ultra-high energy particle detector, particularly through its capability to search for inclined showers produced by neutrinos. We describe the neutrino searches made with the Observatory with particular emphasis on the recent results following the detections of gravitational waves from binary mergers with Advanced LIGO and VIRGO, leading to competitive limits.

scholarly journals Results from the Pierre Auger Observatory

2019 ◽  
Vol 209 ◽  
pp. 01002
Author(s):  
Esteban Roulet
Keyword(s):  
Cosmic Rays ◽  
Pierre Auger Observatory ◽  
Ultrahigh Energy ◽  
Ultrahigh Energy Cosmic Rays

I describe some of the results on ultrahigh-energy cosmic rays that have been obtained with the Pierre Auger Observatory. These include measurements of the spectrum, composition and anisotropies. Possible astrophysical scenarios that account for these results are discussed.

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