Results 11 to 20 of about 1,141,194 (143)

Supergalactic Structure of Multiplets with the Telescope Array Surface Detector [PDF]

open access: yesEPJ Web of Conferences, 2019
Evidence of supergalactic structure of multiplets has been found for ultra-high energy cosmic rays (UHECR) with energies above 1019 eV using 7 years of data from the Telescope Array (TA) surface detector.
Lundquist Jon Paul, Sokolsky Pierre V.
doaj   +1 more source

DAMA/LIBRA-phase1 results and perspectives of the phase2

open access: yesEPJ Web of Conferences, 2015
The results obtained with the total exposure of 1.04 ton × yr collected by DAMA/LIBRA–phase1 deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N. during 7 annual cycles are summarized.
Bernabei R.   +16 more
doaj   +2 more sources

Axion-like Particles Implications for High-Energy Astrophysics [PDF]

open access: yesUniverse, 8, 253 (2022), 2022
We offer a pedagogical introduction to axion-like particles (ALPs) as far as their relevance for high-energy astrophysics is concerned, from a few MeV to 1000 TeV. This review is self-contained, in such a way to be understandable even to non-specialists.
arxiv   +1 more source

Mechanical Structure Design and Experimental Study of Gamma-ray Monitor for Small Satellite Payload

open access: yesApplied Sciences, 2022
In this paper, a novel mechanical structure for a gamma-ray monitor (GRM) is designed for a small satellite payload. Its structural stiffness, strength and dynamic response are directly related to the performance of the novel GRM, which must meet the ...
Pengfei Guo   +6 more
doaj   +1 more source

Action principle of Galilean relativistic Proca theory

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In this paper, we discuss Galilean relativistic Proca theory in detail. We first provide a set of mapping relations, derived systematically, that connect the covariant and contravariant vectors in the Lorentz relativistic and Galilean relativistic ...
Rabin Banerjee, Soumya Bhattacharya
doaj   +1 more source

DAMA/LIBRA-phase1 results and perspectives of the phase2

open access: yesEPJ Web of Conferences, 2016
The DAMA/LIBRA experiment (∼ 250 kg of highly radio-pure NaI(Tl)) is running deep underground at the Gran Sasso National Laboratory (LNGS) of the I.N.F.N.
Bernabei R.   +16 more
doaj   +1 more source

Testing Relativity with High-Energy Astrophysical Neutrinos [PDF]

open access: yesPhys.Rev.D89:043005,2014, 2013
The recent observation of high-energy astrophysical neutrinos can be used to constrain violations of Lorentz invariance emerging from a quantum theory of gravity. We perform threshold and Cherenkov analyses that improve existing bounds by factors ranging from about a million to 10^{20}.
arxiv   +1 more source

Vacuum stability and radiative symmetry breaking of the scale-invariant singlet extension of type II seesaw model

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
The questions of the origin of electroweak symmetry breaking and neutrino mass are two major puzzles in particle physics. Neutrino mass generation requires new physics beyond the Standard Model and also suggests reconsideration of physics of symmetry ...
Bayu Dirgantara   +2 more
doaj   +1 more source

High Energy Astrophysics [PDF]

open access: yes2013, Frontiers of Physics, 8(6): 605-608, 2014
High energy astrophysics is one of the most active branches in contemporary astrophysics. It studies astrophysical objects that emit X-ray and gamma-ray photons, such as accreting super-massive and stellar-size black holes, and various species of neutron stars.
arxiv   +1 more source

Constraining the Thickness of the Galactic Halo through Cosmic-Ray Anisotropy Using the Spatial-Dependent-Propagation Model

open access: yesUniverse, 2023
The spatial-dependent-propagation (SDP) model with a nearby source works well to reproduce the coevolving features of both cosmic-ray (CR)-nuclei spectra and anisotropy. However, it is well known that the Sun is actually deviating from the galactic disk.
Bing-Qiang Qiao   +6 more
doaj   +1 more source

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