Results 71 to 80 of about 46,693 (203)

Cosmic Bulk Flow Analysis in Modified Gravity Theories: f(R) and Perturbed f(R) Models with Neutrino Coupling

open access: yesThe Astronomical Journal
In this study, we explore the characteristics of bulk flow across various redshift ranges within the frameworks of f ( R ) gravity, perturbed f ( R ) gravity, and perturbed f ( R ) gravity coupled with neutrinos.
Muhammad Yarahmadi, Amin Salehi
doaj   +1 more source

High-Energy Neutrinos from Cosmic Rays

open access: yes, 2002
We introduce neutrino astronomy from the observational fact that Nature accelerates protons and photons to energies in excess of 10^{20} and 10^{13} eV, respectively. Although the discovery of cosmic rays dates back close to a century, we do not know how
Halzen, F.
core   +2 more sources

Neutrinos and Gamma Rays from Galaxy Clusters Constrained by the Upper Limits of IceCube

open access: yesThe Astrophysical Journal
Clusters of galaxies possess the capability to accelerate cosmic rays (CRs) to very high energy up to ∼10 ^18 eV due to their large size and magnetic field strength, which favor CR confinement for cosmological times.
Saqib Hussain   +2 more
doaj   +1 more source

Multi-Messenger Connection in High-Energy Neutrino Astronomy

open access: yesUniverse
Low fluxes of astrophysical neutrinos at TeV energies, and the overwhelming background of atmospheric neutrinos below that, render the current paradigm of neutrino astronomy a severely statistics-limited one.
Ankur Sharma
doaj   +1 more source

On the High-Energy Neutrino Emission from Active Galactic Nuclei

open access: yesUniverse, 2018
We review observational aspects of the active galactic nuclei and their jets in connection with the detection of high-energy neutrinos by the Antarctic IceCube Neutrino Observatory.
Emma Kun   +3 more
doaj   +1 more source

Mimicking diffuse supernova antineutrinos with the Sun as a source

open access: yes, 2009
Measuring the electron antineutrino component of the cosmic diffuse supernova neutrino background (DSNB) is the next ambitious goal for low-energy neutrino astronomy. The largest flux is expected in the lowest accessible energy bin.
B. T. Cleveland   +27 more
core   +1 more source

Two Micron‐Size Dark Dimensions

open access: yesFortschritte der Physik, Volume 73, Issue 8, August 2025.
Abstract Two extra dimensions of micron scale might simultaneously address the gauge and cosmological hierarchy problems. In this paper various observational bounds in scenarios with one and two large extra dimensions are examined, to see if they are compatible with the micron scale.
Luis A. Anchordoqui   +2 more
wiley   +1 more source

Search for Neutrino Doublets and Triplets Using 11.4 yr of IceCube Data

open access: yesThe Astrophysical Journal
We report a search for high-energy astrophysical neutrino multiplets, detections of multiple neutrino clusters in the same direction within 30 days, based on an analysis of 11.4 yr of IceCube data.
R. Abbasi   +427 more
doaj   +1 more source

The Giant Radio Array for Neutrino Detection

open access: yesEPJ Web of Conferences, 2016
High-energy neutrino astronomy will probe the working of the most violent phenomena in the Universe. The Giant Radio Array for Neutrino Detection (GRAND) project consists of an array of ∼ 105 radio antennas deployed over ∼ 200 000 km2 in a mountainous ...
Martineau-Huynh Olivier   +22 more
doaj   +1 more source

Double Beta Decay Experiments With Loaded Liquid Scintillator

open access: yesFrontiers in Physics, 2019
Liquid scintillator detectors have many properties which are highly advantageous for neutrino research at the MeV energy scale. There are various choices of additives to an organic liquid scintillator which typically function as the nuclear targets in a ...
Itaru Shimizu, Mark Chen
doaj   +1 more source

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