Conveners
Astrophysical Neutrinos
- Enrique Zas (IGFAE - University of Santiago)
Astrophysical Neutrinos
- Shigeru Yoshida (Chba University)
Astrophysical Neutrinos
- Shigeru Yoshida (Chba University)
High energy neutrino astronomy has been blooming. In addition to the possible identification of the blazar and Seyfert II galaxies as neutrino emitters, the present data has indicated some hints to characterize or constrain the cosmic ray origin. In this talk we demonstrate how the neutrino data has constrained the cosmic ray origin. The two observational facts that the astrophysical neutrino...
Hyper-Kamiokande (Hyper-K) is a next generation underground large water Cherenkov detector. Its tank will be filled with 260,000 metric tons of ultra-pure water with a fiducial volume of 0.19 Mtons, which is about 8 times larger than that of its predecessor Super-Kamiokande. In its water volume, Cherenkov light will be produced by neutrino interactions and detected by newly developed photo...
The Jiangmen Underground Neutrino Observatory (JUNO) will be the largest ever built liquid scintillator detector for neutrino physics. JUNO is a 20kton liquid scintillator detector, equipped with ~18000 large PMTs and ~26000 small PMTs. It will be sensitive to various neutrino sources and will give a unique contribution to the observation of the all-flavor neutrino flux from a Galactic core...
The ANTARES neutrino telescope has taken high-quality data for over 15 years, starting in 2007 and ending its operation in 2022.
During this period, it has been the most sensitive detector for cosmic neutrino fluxes from the Southern Sky below 100 TeV, where significant emission induced by Galactic Cosmic Rays is expected.
In addition, it has shown the great potential of under-water neutrino...
Baikal-GVD (Gigaton Volume Detector) is a neutrino telescope aimed to observe high energy (TeV–PeV) neutrino, as well as to identify and explore their sources. It has been deployed in Lake Baikal in the south-eastern part of Russia and taking data since 2015 when the first cluster of 288 optical modules was built. The Baikal-GVD optical modules equipped with 10-inch photo-multiplier tubes are...
In this contribution, we present the expectations of the full detector KM3NeT/ARCA for particular Starburst Galaxies signals, both as a diffuse signal and as point-like excess. To describe the diffuse flux, we use a recent theoretical model, also developed by some of the authors of this contribution, which implements a “blending” of spectral indexes to describe the high energy spectral energy...
The KM3NeT experiment is a neutrino telescope which makes use of photomultiplier tubes to detect the Cherenkov radiation emitted by charged particles.
The first interaction of this light with the detector occurs at the photocathodes of the photomultiplier tubes, is then of primary importance to have the most complete characterisation of these elements.
An improved version of the former...
While other neutrino telescopes use optical modules comprising a single large 10” PMT
in a 17” glass sphere, KM3NeT features a novel design with 31 small PMTs with a 3”
photocathode diameter, along with calibration devices and the associated electronics. The
new design provides multiple benefits, such as an improved photocathode area, equivalent to
the effective area of three 10” PMTs, an...
Detecting ultra-high-energy cosmic particles is critical to understanding the origin and properties of sources that can create such phenomenon. However, at the highest energies the particle flux is very low, and so a detection method that can use large areas as a target medium is highly valuable. Moreover, the features of the primary particle must be reconstructable using the data collected....
Upcoming neutrino telescopes may discover ultra-high-energy (UHE) cosmic neutrinos, with energies beyond 100 PeV, in the next 10--20 years. Finding their sources would expose the long-sought origin of UHE cosmic rays. We search for sources by looking for multiplets of UHE neutrinos arriving from similar directions. Our forecasts are state-of-the-art, geared at neutrino radio-detection in...
Primordial Black Holes are Black holes formed in the early universe. They evaporate emitting all the elementary particles whose mass is lower than the Primordial Black Holes temperature. We focused on PBHs whose mass is the range $[5×10^{14},8×10^{15}]$g. We studied their neutrinos emission. These neutrinos can interact via coherent elastic neutrino-nucleus scattering (CE$\nu$NS) producing a...
Abstract – In my talk I will review a model of dark matter where a gauge singlet heavy neutral lepton couples to the visible sector thanks to Higgs induced mixing with a right-handed (RH) neutrino, the source RH neutrino, responsible for light neutrino masses via seesaw mechanism. The mixing can produce an abundance of the heavy neutral lepton that in this way can play the role of dark matter...
The recently discovered 100GeV- TeV emission from Novae hints towards a possible hadronic origin of this radiation component. To investigate such scenario, I developed a tailored Monte Carlo (MC) simulation that reproduces the kinematics of proton-proton interactions occurring in the nova wind. As a result, I find that sub-TeV observations of Novae can be reproduced by an hadronic scenario. I...
