Results 31 to 40 of about 243,233 (254)

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

Universe, 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, Yu-Hua Yao, Wei Liu, Qiang Yuan, Xiao-Jun Bi, Hong-Bo Hu, Yi-Qing Guo   +6 more
doaj   +1 more source

Centaurus A at Ultra-High Energies [PDF]

, 2010
We review the importance of Centaurus A in high energy astrophysics as a nearby object with many of the properties expected of a major source of very high energy cosmic rays and gamma-rays.
Abraham, Aharonian, Allan, Beck, Bellido, Bellido, Benjamin J. Whelan, Berezinskii, Bond, Brown, Carra miñana, D'Urso, Di Giulio, Hague, Harton, Nagar, Philip G. Edwards, Rieger, Roger W. Clay, Schüssler, Steinle, Steinle, Sun, Suomijärvi, Wahlberg   +24 more
core   +1 more source

Photon‐Sphere Modes in Curved Optical Microcavities: A Black‐Hole Analogue Laser

Advanced Science, EarlyView.
An optical analogue of a Schwarzschild black hole is realized using curved microcavities that preserve light‐like geodesics. A new family of laser modes confined around the photon sphere is identified alongside conventional whispering‐gallery modes. Analytical theory, numerical simulations, and experiments reveal curvature‐induced confinement, enabling
Chenni Xu, Aswathy Sundaresan, Nazire‐Begüm Kazkal, Clement Lafargue, Lior Zarfaty, Li‐Gang Wang, Ofek Birnholtz, Dominique Decanini, Melanie Lebental, Patrick Sebbah   +9 more
wiley   +1 more source

The Gamma Ray Detection Capabilities of the Alpha Magnetic Spectrometer [PDF]

, 1999
The modeled performance of the Alpha Magnetic Spectrometer (AMS) as a high energy (0.3 to 100 GeV) gamma-ray detector is described, and its gamma ray astrophysics objectives are discussed.Comment: Latex2e file; 33 pages of text, 20 EPS figures.
Acciarri, Ahlen, Alcock, Alverson, Baring, Barwick, Battiston, Begeman, Berezinsky, Bignami, Blandford, Bloom, Chiang, Dar, Dermer, Dunlop, Fich, Flores, Fukugita, Golden, Gould, Hartman, Henri, Hillas, Hunter, Hurley, Jungman, Kazanas, Kerrick, Kratsov, Kurfess, Li, Mattox, Mori, Mukherjee, Müller, Navarro, Navarro, Padovani, Plaga, Pohl, R Battiston, Reid, Salamon, Salamon, Salamon, Sambruna, Sikora, Sjöstrand, Sreekumar, Stecker, Stecker, Stecker, Stecker, Swanenberg, Thompson, Thompson, Thompson, Turner, von Montigny, Waxman, Wind   +61 more
core   +4 more sources

Preface: High energy astrophysics [PDF]

Frontiers of Physics, 2013
High energy astrophysics is one of the most active branches in the contemporary astrophysics. It studies astrophysical objects that emit X-ray and γ-ray photons, such as accreting super-massive and stellar-size black holes, and various species of neutron stars.
Bing Zhang, Peter Mésáros
openaire   +1 more source

ChatCFD: A Large Language Model‐Driven Agent for End‐to‐End Computational Fluid Dynamics Automation with Structured Knowledge and Reasoning

Advanced Intelligent Discovery, EarlyView.
Chat computational fluid dynamics (CFD) introduces an large language model (LLM)‐driven agent that automates OpenFOAM simulations end‐to‐end, attaining 82.1% execution success and 68.12% physical fidelity across 315 benchmarks—far surpassing prior systems.
E Fan, Kang Hu, Zhuowen Wu, Jiangyang Ge, Jiawei Miao, Yuzhi Zhang, He Sun, Weizong Wang, Tianhan Zhang   +8 more
wiley   +1 more source

Cosmic Physics: The High Energy Frontier

, 2003
Cosmic rays have been observed up to energies $10^8$ times larger than those of the best particle accelerators. Studies of astrophysical particles (hadrons, neutrinos and photons) at their highest observed energies have implications for fundamental ...
Abu-Zayyad T, Abu-Zayyad T, Aharonian F, Aharonian F A, Aharonian F A, Aharonian F A, Ahmad Q R, Ahn E-J, Alavi-Harati A, Albuquerque I F M, Alfaro J, Alfaro J, Alfaro J, Allen S W, Aloisio R, Alvarez-M?niz J, Amelino-Camilia G, Anchordoqui L A, Anchordoqui L A, Anchordoqui L A, Arkani-Hamed N, Atkins R, Ave M, Ave M, Baade W, Bandyopadhyay A, Barbot C, Berezinsky V, Berezinsky V S, Berezunsky V S, Bershady M A, Bhattacharjee P, Bhattacharjee P, Bhattacharyya G, Biermann P L, Biermann P L, Biller S, Biller S, Bird D J, Bird D J, Blanton M, Blasi P, Bloom E D, Boldt E, Boldt E, Bordes J, Brown R W, Bulik T, Burdman G, Butt Y M, Catanese M, Catanese M, Chadwick P M, Cheng K S, Cheung D J H, Chisholm J R, Cillis A N, Cline D, Coleman S, Colladay D, Colles M, Dai, Daugerty J K, De Jager O C, De Marco D, Dicus D A, Dimopoulos S, Domokos G, Domokos G, Domokos G, Drury L, Drury L, Dwek E, Dwek E, Dwek E, Elbaz D, Elbert J W, Elgaroy, Ellis J, Ellis J, Ellis J, Engel R, Enomomto R, Erber T, F W Stecker, Falcke H, Fall S M, Fargion D, Farrar G R, Farrar G R, Feng J L, Fixsen D J, Fixsen D J, Fossati G, Fukuda Y, Fukuda Y, Gaisser T K, Gaisser T K, Gandhi R, Garay L J, Gelmini G, Georgi H, Ginzburg V L, Gispert R, Glashow S L, Gould R J, Greisen K, Guy J, Halzen F, Halzen F, Hartman R C, Hauser M G, Hauser M G, Hayashida N, Hill C T, Hillas A M, Hurley K, Jacobson T, Jacobson T, Jain P, Jones T W, Jorstad S G, Kachelrieß M, Kaluza T, Kazanas D, Kibble T W B, Kifune T, Kifune T, Klein O, Kolb E W, Konopelko A K, Konopka T, Krawczynski, Krennrich F, Krennrich F, Krizmanic J F, Krolik J, Kulkarni S R, Kuo C I, Kusenko A, Kuz'min V A, Lagache G, Landau L D, Learned J G, Lilly S J, Linsley J, Livio M, Madau P, Madau P, Malkan M A, Malkan M A, Mannheim K, Mao S, Mastichiadas A, Mather J, Michelson P F, Migdal A B, Muraishi H, Myers C, Mészáros P, Nagano M, Nishimura J, Norris J, Nussinov S, Olinto A, Pearson T J, Penzias A A, Petry D, Petry D, Pettini M, Pian E, Pohl M, Protheroe R J, Puget J-L, Puget J-L, Punch M, Pühlhofer G, Quinn J, Randall L, Robinett R W, Rowan-Robinson M, Salam A, Salamon M H, Sarkar S, Sasaki N, Sato H, Schaefer B E, Schaefer B E, Schmidt M, Schmidt M, Scully S T, Shinozaki K, Shklovskii I S, Sigl G, Smalin L, Smoot G, Smy M B, Sokolsky P, Spergel D N, Sreekumar P, Stanev T, Stanev T, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Stecker F W, Steidel C C, Takeda M, Takeda M, Takeda M, Tan J C, Tanimori T, Tanimori T, Tremaine S, Tyler C, Vietri M, Vietri M, Waxman E, Waxman E, Wdowczyk J, Weekes T C, Weiler T J, Weiler T J, Weinberg S, Weinberg S, Weinheimer C, Wischnewski R, Wright E L, Xu C, Yoshida S, Yoshikoshi T, Zas E, Zatsepin G T   +251 more
core   +1 more source

Impact of Cattaneo–Christov Heat and Mass Flux on MHD Hybrid Nanofluid Flow Over an Extending Surface With Convective and Mass Flux Effects

Asia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates the flow of a magnetized hybrid nanofluid over a permeable stretching surface. The mass and thermal transport within the system is regulated using the Cattaneo–Christov flux theory. The fluid is additionally subjected to thermophoresis, chemical reaction, Brownian motion, and activation energy effects.
Ebrahem A. Algehyne, Abdul Bariq, Mounirah Areshi, Fahad Maqbul Alamrani, Zehba Raizah, Izharul Haq, Anwar Saeed   +6 more
wiley   +1 more source

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

European 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, Kristjan Kannike, Warintorn Sreethawong   +2 more
doaj   +1 more source

Fundamental Physics and Relativistic Laboratory Astrophysics with Extreme Power Lasers

, 2012
The prospects of using extreme relativistic laser-matter interactions for laboratory astrophysics are discussed. Laser-driven process simulation of matter dynamics at ultra-high energy density is proposed for the studies of astrophysical compact objects ...
Bulanov, S. V., Esirkepov, T. Zh.
core   +1 more source