Results 41 to 50 of about 1,645,326 (221)

High-Energy Neutrino Astrophysics [PDF]

open access: yesAnnual Review of Nuclear and Particle Science, 2000
▪ Abstract  High-energy (>100 MeV) neutrino astrophysics enters an era of opportunity and discovery as the sensitivity of detectors approaches astrophysically relevant flux levels. We review the major challenges for this emerging field, among which the nature of dark matter, the origin of cosmic rays, and the physics of extreme objects such as ...
Learned, J. G., Mannheim, K.
openaire   +3 more sources

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

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

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

EXTRAGALACTIC HIGH-ENERGY TRANSIENTS: EVENT RATE DENSITIES AND LUMINOSITY FUNCTIONS [PDF]

open access: yes, 2015
Several types of extragalactic high-energy transients have been discovered, which include high-luminosity and low-luminosity long-duration gamma-ray bursts (GRBs), short-duration GRBs, supernova shock breakouts (SBOs), and tidal disruption events (TDEs ...
Hui Sun   +6 more
semanticscholar   +1 more source

Catalog of 3 < z < 5.5 Quasar Candidates Selected among XMM-Newton Sources and Its Spectroscopic Verification

open access: yesFrontiers in Astronomy and Space Sciences, 2017
We have compiled a catalog of 903 quasar candidates (including known quasars) at 3 < z < 5.5 selected among X-ray sources from the XMM-Newton serendipitous survey (3XMM-DR4 catalog).
Georgii Khorunzhev   +3 more
doaj   +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

High energy neutrino astrophysics [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1999
9 pages, 7 figures, invited talk at Neutrino 98, Takayama 4-9 June 1998.
openaire   +3 more sources

High-energy astrophysics with neutrino telescopes [PDF]

open access: yesThe European Physical Journal C, 2010
Neutrino astrophysics offers new perspectives on the Universe investigation: high energy neutrinos, produced by the most energetic phenomena in our Galaxy and in the Universe, carry complementary (if not exclusive) information about the cosmos with respect to photons.
SPURIO, MAURIZIO, CHIARUSI, TOMMASO
openaire   +4 more sources

Decay of High-Energy Astrophysical Neutrinos [PDF]

open access: yesPhysical Review Letters, 2003
Existing limits on the non-radiative decay of one neutrino to another plus a massless particle (e.g., a singlet Majoron) are very weak. The best limits on the lifetime to mass ratio come from solar neutrino observations, and are $ /m \agt 10^{-4}$ s/eV for the relevant mass eigenstate(s).
John F. Beacom   +5 more
openaire   +3 more sources

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