scholarly journals The IceCube Pie Chart: Relative Source Contributions to the Cosmic Neutrino Flux

2021 ◽  
Vol 921 (1) ◽  
pp. 45
Author(s):  
I. Bartos ◽  
D. Veske ◽  
M. Kowalski ◽  
Z. Márka ◽  
S. Márka
Keyword(s):  
Neutrino Flux ◽  
Source Contributions ◽  
Cosmic Neutrino ◽  
Pie Chart

scholarly journals SEARCH FOR NEUTRINO EMISSION FROM GAMMA-RAY SOURCES WITH THE ANTARES TELESCOPE

2012 ◽  
Vol 08 ◽  
pp. 307-310
Author(s):  
C. BIGONGIARI
Keyword(s):  
Gamma Ray ◽  
Neutrino Flux ◽  
Three Dimensional ◽  
Effective Area ◽  
High Energy ◽  
Neutrino Telescope ◽  
Neutrino Detector ◽  
Upper Limits ◽  
Cosmic Neutrino ◽  
Promising Source

ANTARES is the first undersea neutrino detector ever built and presently the neutrino telescope with the largest effective area operating in the Northern Hemisphere. A three-dimensional array of photomultiplier tubes detects the Cherenkov light induced by the muons produced in the interaction of high energy neutrinos with the matter surrounding the detector. The detection of astronomical neutrino sources is one of the main goals of ANTARES. The search for point-like neutrino sources with the ANTARES telescope is described and the preliminary results obtained with data collected from 2007 to 2010 are shown. No cosmic neutrino source has been observed and neutrino flux upper limits have been calculated for the most promising source candidates.

scholarly journals Recent Results from the Antares Neutrino Telescope

2019 ◽  
Vol 207 ◽  
pp. 01001
Author(s):  
Antoine Kouchner
Keyword(s):  
Galactic Plane ◽  
Large Fraction ◽  
Neutrino Flux ◽  
High Energy ◽  
Neutrino Telescope ◽  
Point Sources ◽  
Joint Analysis ◽  
Neutrino Source ◽  
Cosmic Neutrino ◽  
The One

Antares, the first undersea neutrino telescope, has been continuously operating since 2007 in the Mediterranean Sea. The transparency of the water allows for a very good angular resolution in the reconstruction of neutrino events of all flavors. This results in an unmatched sensitivity for neutrino source searches, in a large fraction of the Southern Sky, at TeV energies. As a consequence, Antares provides valuable constraints on the origin of the cosmic neutrino flux discovered by the IceCube Collaboration. Based on an all-flavor dataset spanning nine years of operation of the detector, the latest results of Antares searches for neutrino point sources, and for diffuse neutrino emission from the entire sky as well as from several interesting regions such as the Galactic Plane, are presented. Several results have been obtained through a joint analysis with the IceCube Collaboration. Concerning the multi-messenger program, the focus is made on the follow-up searches of IceCube alerts, in particular the one related to the TXS 0506+056 blazar, thought to be the first extragalactic high-energy neutrino source identified so far.

scholarly journals Constraints on the ultrahigh-energy cosmic neutrino flux from the fourth flight of ANITA

2019 ◽  
Vol 99 (12) ◽  
Author(s):  
P. W. Gorham ◽  
P. Allison ◽  
O. Banerjee ◽  
L. Batten ◽  
J. J. Beatty ◽  
...  
Keyword(s):  
Neutrino Flux ◽  
Ultrahigh Energy ◽  
Cosmic Neutrino

scholarly journals Observational constraints on the ultrahigh energy cosmic neutrino flux from the second flight of the ANITA experiment

2010 ◽  
Vol 82 (2) ◽  
Author(s):  
P. W. Gorham ◽  
P. Allison ◽  
B. M. Baughman ◽  
J. J. Beatty ◽  
K. Belov ◽  
...  
Keyword(s):  
Neutrino Flux ◽  
Observational Constraints ◽  
Ultrahigh Energy ◽  
Cosmic Neutrino

scholarly journals On the τ flavor of the cosmic neutrino flux

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Yasaman Farzan
Keyword(s):  
Dark Matter ◽  
Degrees Of Freedom ◽  
Neutrino Flux ◽  
High Energy ◽  
New Physics ◽  
Beyond The Standard Model ◽  
New Era ◽  
The Standard Model ◽  
Cosmic Neutrino ◽  
Standard Picture

Abstract Observation of high energy cosmic neutrinos by ICECUBE has ushered in a new era in exploring both cosmos and new physics beyond the Standard Model (SM). In the standard picture, although mostly νμ and νe are produced in the source, oscillation will produce ντen route. Certain beyond SM scenarios, like interaction with ultralight DM can alter this picture. Thus, the flavor composition of the cosmic neutrino flux can open up the possibility of exploring certain beyond the SM scenarios that are inaccessible otherwise. We show that the τ flavor holds a special place among the neutrino flavors in elucidating new physics. Interpreting the two anomalous events observed by ANITA as ντ events makes the tau flavor even more intriguing. We study how the detection of the two tau events by ICECUBE constrains the interaction of the neutrinos with ultralight dark matter and discuss the implications of this interaction for even higher energy cosmic neutrinos detectable by future radio telescopes such as ARA, ARIANNA and GRAND. We also revisit the 3 + 1 neutrino scheme as a solution to the two anomalous ANITA events and clarify a misconception that exists in the literature about the evolution of high energy neutrinos in matter within the 3 + 1 scheme with a possibility of scattering off nuclei. We show that the existing bounds on the flux of ντ with energy of EeV rules out this solution for the ANITA events. We show that the 3 + 1 solution can be saved from both this bound and from the bound on the extra relativistic degrees of freedom in the early universe by turning on the interaction of neutrinos with ultralight dark matter.

scholarly journals Differential limit on the extremely-high-energy cosmic neutrino flux in the presence of astrophysical background from nine years of IceCube data

2018 ◽  
Vol 98 (6) ◽  
Author(s):  
M. G. Aartsen ◽  
M. Ackermann ◽  
J. Adams ◽  
J. A. Aguilar ◽  
M. Ahlers ◽  
...  
Keyword(s):  
Neutrino Flux ◽  
High Energy ◽  
Cosmic Neutrino
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