scholarly journals Multi-detector approach to enhance the sensitivity of neutrino telescopes to low-energy astrophysical sources

2021 ◽  
Vol 16 (12) ◽  
pp. C12012
Author(s):  
G. de Wasseige
Keyword(s):  
Energy Range ◽  
Neutrino Flux ◽  
High Energy ◽  
Low Energy ◽  
High Energy Neutrino ◽  
Neutrino Telescopes ◽  
Energy Neutrino ◽  
Astrophysical Neutrinos ◽  
Transient Sources ◽  
The Moment

Abstract While large neutrino telescopes have so far mainly focused on the detection of TeV-PeV astrophysical neutrinos, several efforts are ongoing to extend the sensitivity down to the GeV level for transient sources. Only a handful of neutrino searches have been carried out at the moment leaving the signature of astrophysical transients poorly known in this energy range. In this contribution, we discuss the motivations for high-energy neutrino telescopes to explore the GeV energy range and summarize the current limitations of detectors, such as IceCube and KM3NeT. We then present and compare different approaches for multi-detector analyses that may enhance the sensitivity to a transient GeV neutrino flux.

scholarly journals Behaviour of the high-energy neutrino flux in the Earth’s atmosphere

2015 ◽  
Vol 1 (4) ◽  
pp. 3-10 ◽  
Author(s):  
Алексей Кочанов ◽  
Aleksey Kochanov ◽  
Анна Морозова ◽  
Anna Morozova ◽  
Татьяна Синеговская ◽  
...  
Keyword(s):  
Energy Range ◽  
Atmospheric Neutrino ◽  
Neutrino Flux ◽  
Measurement Data ◽  
Cosmic Ray ◽  
High Energy ◽  
Electron Neutrino ◽  
Total Electron ◽  
High Energy Neutrino ◽  
Energy Neutrino

The processing of the IceCube experiment data, obtained during 988 days (2010-2013), revealed 37 high-energy neutrino-induced events with deposited energies 30 TeV - 2 PeV. The hypothesis of an astrophysical origin of these neutrinos is confirmed at the statistical confidence level of 5.7 standard deviations. To identify reliably the neutrino events, a thorough calculation of the atmospheric neutrino background is required. In this work we calculate the atmospheric neutrino spectra in the energy range 100 GeV - 10 PeV with usage of several hadronic models and a few parametrizations of the cosmic ray spectra, supported by experimental data, which take into account the knee. It is shown that rare decays of short-lived neutral каоns K0_s contribute more than a third of the total electron neutrino flux at the energies above 100 ТeV. The account for kaons production in pion-nucleus collisions increases the electron neutrino flux by 5-7 % in the energy range 10^2 -10^4 GeV. Calculated neutrino spectra agree on the whole with the measurement data. The neutrino flavor ratio, extracted from the IceCube data, possibly indicates that the conventional atmospheric electron neutrino flux obtained in the IceCube experiment contains an admixture of the astrophysical neutrinos in the range 20 − 50 TeV.

scholarly journals Detection of a flaring blazar coincident with an IceCube high-energy neutrino

2019 ◽  
Vol 207 ◽  
pp. 02001
Author(s):  
Anna Franckowiak
Keyword(s):  
Gamma Ray ◽  
Spectral Energy Distribution ◽  
Neutrino Flux ◽  
High Energy ◽  
Spectral Energy ◽  
Large Area ◽  
High Energy Neutrino ◽  
Energy Neutrino ◽  
Radio Wavelength ◽  
First Time

In September 22, 2017, IceCube released a public alert announcing the detection of a 290 TeV neutrino track event with an angular uncertainty of one square degree (90% containment). A multi-messenger follow-up campaign was initiated resulting in the detection of a GeV gamma-ray flare by the Fermi Large Area Telescope positionally consistent with the location of the known Bl Lac object, TXS 0506+056 , located only 0.1 degrees from the best-fit neutrino position. The probability of finding a GeV gamma-ray flare in coincidence with a high-energy neutrino event assuming a correlation of the neutrino flux with the gamma-ray energy flux in the energy band between 1 and 100 GeV was calculated to be 3σ (after trials correction). Following the detection of the flaring blazar the imaging air Cherenkov telescope MAGIC detected the source for the first time in the > 100 GeV gamma-ray band. The activity of the source was confirmed in X-ray, optical and radio wavelength. Several groups have developed lepto-hadronic models which succeed to explain the multi-messenger spectral energy distribution.

High energy neutrino flux from ordinary cosmic strings

1990 ◽  
Vol 331 (1) ◽  
pp. 153-172 ◽  
Author(s):  
Jane H. MacGibbon ◽  
Robert H. Brandenberger
Keyword(s):  
Cosmic Strings ◽  
Neutrino Flux ◽  
High Energy ◽  
High Energy Neutrino ◽  
Energy Neutrino

ULTRA HIGH ENERGY NEUTRINO TELESCOPES

2006 ◽  
Vol 21 (08n09) ◽  
pp. 1914-1924
Author(s):  
PER OLOF HULTH
Keyword(s):  
Lake Baikal ◽  
High Energy ◽  
Atmospheric Neutrinos ◽  
South Pole ◽  
Ultra High Energy ◽  
The South ◽  
High Energy Neutrino ◽  
Neutrino Telescopes ◽  
Energy Neutrino ◽  
Neutrino Astronomy

The Neutrino Telescopes NT-200 in Lake Baikal, Russia and AMANDA at the South Pole, Antarctica have now opened the field of High Energy Neutrino Astronomy. Several other Neutrino telescopes are in the process of being constructed or very near realization. Several thousands of atmospheric neutrinos have been observed with energies up to several 100 TeV but so far no evidence for extraterrestrial neutrinos has been found.

scholarly journals Disentangling neutrino-nucleon cross section and high energy neutrino flux with akm3neutrino telescope

2008 ◽  
Vol 77 (4) ◽  
Author(s):  
E. Borriello ◽  
A. Cuoco ◽  
G. Mangano ◽  
G. Miele ◽  
S. Pastor ◽  
...  
Keyword(s):  
Cross Section ◽  
Neutrino Flux ◽  
High Energy ◽  
High Energy Neutrino ◽  
Energy Neutrino

scholarly journals First constraints on the ultra-high energy neutrino flux from a prototype station of the Askaryan Radio Array

2015 ◽  
Vol 70 ◽  
pp. 62-80 ◽  
Author(s):  
P. Allison ◽  
J. Auffenberg ◽  
R. Bard ◽  
J.J. Beatty ◽  
D.Z. Besson ◽  
...  
Keyword(s):  
Neutrino Flux ◽  
High Energy ◽  
Ultra High Energy ◽  
High Energy Neutrino ◽  
Energy Neutrino
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