Results 41 to 50 of about 1,664,690 (327)
Very High Energy Gamma‐Ray Astronomy [PDF]
Publications of the Astronomical Society of the Pacific, 1999 We present a review of the current status of very high energy gamma-ray astronomy. The development of the atmospheric Cherenkov imaging technique for ground-based gamma-ray astronomy has led to a rapid growth in the number of observatories. The detection of TeV gamma rays from Active Galactic Nuclei was unexpected and is providing new insights into the
M. Catanese, T. C. Weekes
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An analytic analysis of the pion decay constant in three-flavoured chiral perturbation theory
European Physical Journal C: Particles and Fields, 2017 A representation of the two-loop contribution to the pion decay constant in SU(3) chiral perturbation theory is presented. The result is analytic up to the contribution of the three (different) mass sunset integrals, for which an expansion in their ...
B. Ananthanarayan +2 more
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Physics Letters B, 2021 We perform a study of W-boson production in polarized proton-proton collisions through next-to-next-to-leading order (NNLO) in perturbative QCD. This calculation is required to extend the extraction of polarized parton distribution functions to NNLO ...
Radja Boughezal +2 more
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Multi-messenger astronomy with very-high-energy gamma-ray observations [PDF]
Journal of Physics: Conference Series, 2019 After decades of development, multi-messenger astronomy, the combination of information on cosmic sources from photons, neutrinos, charged particles and gravitational waves, is now an established reality.
J. Hinton, E. Ruiz-Velasco
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High-Energy Neutrino Astronomy: Current Status and Prospects [PDF]
Proceedings of European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2019), 2019 In the last decade, neutrino astronomy has taken off with two major breakthroughs, the first observation of high-energy astrophysical neutrinos in 2013 and the first evidence for gamma-rays and neutrinos from a single object published in summer 2018.
G. Wasseige
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High energy neutrino astronomy
Nuclear Physics B - Proceedings Supplements, 2002 Abstract After a long period of development, high energy neutrino astrophysics is approaching a level of sensitivity which reaches below the upper bounds on extraterrestrial neutrino fluxes derived from observed fluxes of cosmics rays and gamma rays.
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Rényi divergences from Euclidean quenches
Journal of High Energy Physics, 2020 We study the generalisation of relative entropy, the Rényi divergence D α (ρ∥ρ β ) in 2d CFTs between an excited state density matrix ρ, created by deforming the Hamiltonian, and the thermal density matrix ρ β .
Barsha G. Chowdhury +2 more
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iid2022: a workshop on statistical methods for event data in astronomy
Frontiers in Astronomy and Space Sciences, 2023 We review the iid2022 workshop on statistical methods for X-ray and γ-ray astronomy and high–energy astrophysics event data in astronomy, held in Guntersville, AL, on Nov. 15–18 2022.
Eric D. Feigelson +1 more
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A Different Perspective on the Solid Lubrication Performance of Black Phosphorous: Friend or Foe?
Advanced Engineering Materials, EarlyView.Researchers investigate black phosphorous (BP) as a standalone solid lubricant coating through ball‐on‐disc linear‐reciprocating sliding experiments in dry conditions. Testing on different metals shows BP doesn't universally reduce friction and wear. However, it achieves 33% friction reduction on rougher iron surfaces and 23% wear reduction on aluminum.
Matteo Vezzelli +5 more
wiley +1 more source
RECENT DEVELOPMENTS IN ULTRA-HIGH ENERGY NEUTRINO ASTRONOMY
Acta Polytechnica, 2013 We outline the current situation in ultrahigh energy (UHE) cosmic ray physics, pointing out the remaining problems, in particular the puzzle concerning the origin of the primary radiation and the role of neutrino astronomy for locating the sources ...
Peter K. F. Grieder
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