Results 31 to 40 of about 20,646,849 (184)

Flavor Anisotropy in the High-Energy Astrophysical Neutrino Sky [PDF]

High-energy astrophysical neutrinos, with TeV--PeV energies, offer unique insight into astrophysics and particle physics. Their incoming directions and flavor composition -- i.e., the proportion of electron, muon, and tau neutrinos in their flux -- are ...
Telalovic, Bernanda, Bustamante, Mauricio   +1 more
core   +8 more sources

Probing particle physics with IceCube

European Physical Journal C: Particles and Fields, 2018
The IceCube observatory located at the South Pole is a cubic-kilometre optical Cherenkov telescope primarily designed for the detection of high-energy astrophysical neutrinos.
Markus Ahlers, Klaus Helbing, Carlos Pérez de los Heros   +2 more
doaj   +1 more source

Solid Harmonic Wavelet Bispectrum for Image Analysis

Advanced Science, EarlyView.
The Solid Harmonic Wavelet Bispectrum (SHWB), a rotation‐ and translation‐invariant descriptor that captures higher‐order (phase) correlations in signals, is introduced. Combining wavelet scattering, bispectral analysis, and group theory, SHWB achieves interpretable, data‐efficient representations and demonstrates competitive performance across texture,
Alex Brown, Mathilda Avirett‐Mackenzie, Carolin Villforth, Georgios Exarchakis   +3 more
wiley   +1 more source

Charge-neutral, GeV-scale electron-positron pair beams produced using bremsstrahlung gamma rays

Communications Physics
Matter-antimatter plasmas, such as electron-positron pair plasmas, are frequently observed in various astrophysical phenomena. In laboratory settings, electron-positron pairs have often been generated using high-Z converters irradiated by either direct ...
Youhwan Noh, Jaehyun Song, Mohammad Mirzaie, Calin Ioan Hojbota, Hyeong-il Kim, Seongmin Lee, Junho Won, Hoon Song, Chiwan Song, Chang-Mo Ryu, Chang Hee Nam, Woosuk Bang   +11 more
doaj   +1 more source

KM3NeT sensitivity to low energy astrophysical neutrinos

, 2021
International audienceKM3NeT, a new generation of neutrino telescope, is currently being deployed in the Mediterranean Sea. While its two sites, ORCA and ARCA, were respectively designed for the determination of neutrino mass hierarchy and high-energy ...
de Wasseige, Gwenhaël, G. de Wasseige
core   +1 more source

Principal Component‐Based Classification of Blazar Candidates of Uncertain Type in the 4FGL/LAT

Astronomische Nachrichten, EarlyView.
ABSTRACT We adopted principal component analysis (PCA), linear discriminant analysis (LDA), and support vector machines (SVM), to study classification for a sample of 2708 Fermi blazars: 1142 BL Lac objects (BLLs), 759 flat spectrum radio quasars (FSRQs), and 807 blazar candidates of uncertain type (BCUs).
Wen‐Xin Yang, Guo‐Hai Chen, Jing‐Tian Zhu, Hong‐Guang Wang, Denis Bastieri, Xu‐Hong Ye, Jing‐Chao Liang, De‐Xiang Wu, Jiang‐He Yang, Anton A. Strigachev, Rumen S. Bachev, Jun‐Jie Feng, Yi Liu, Jun‐Hui Fan   +13 more
wiley   +1 more source

The life and work of Ernest Sydney Keeping

Canadian Journal of Statistics, EarlyView.
Abstract This article reviews the life and contributions of Ernest S. Keeping (1895–1984), a British‐born physicist who became a mathematics professor at the University of Alberta in 1929. He played a pivotal role in shaping the university's Mathematics Department, serving as its head from 1954 to 1961, and continuing to teach until 1970, nine years ...
David R. Bellhouse, Christian Genest
wiley   +1 more source

Surrogate Modeling of Landau Damping with Deep Operator Networks

The Astrophysical Journal
Kinetic simulations excel at capturing microscale plasma physics phenomena with high accuracy, but their computational demands make them impractical for modeling large-scale space and astrophysical systems.
Simin Shekarpaz, Chuanfei Dong, Ziyu Huang   +2 more
doaj   +1 more source

Flexible Direct‐Conversion X‐Ray Detectors: From Emerging Materials to Conformal Imaging

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This comprehensive review analyzed the performance, challenges, and future directions of four emerging material systems for next‐generation flexible direct‐conversion X‐ray detectors: organic semiconductors, perovskites, metal–organic frameworks, and inorganic metal compounds.
Haipeng Di, Guoliang Ma, Jiaxin Mu, Kailian Dong, Haibin Li, Manjing Wang, Xin Song, Haojin Li, Jianwei Xu, Yiying Zhao, Jingjing Zhao, Guojia Fang   +11 more
wiley   +1 more source

Towards bright gamma-ray flash generation from tailored target irradiated by multi-petawatt laser

Scientific Reports, 2022
One of the remarkable phenomena in the laser-matter interaction is the extremely efficient energy transfer to $$\gamma $$ γ -photons, that appears as a collimated $$\gamma $$ γ -ray beam.
Prokopis Hadjisolomou, Tae Moon Jeong, Sergei V. Bulanov   +2 more
doaj   +1 more source