Results 1 to 10 of about 1,355,957 (311)

Deformed Lorentz Symmetry and High-Energy Astrophysics (I) [PDF]

arXiv, 2000
An updated discussion of Lorentz symmetry violation in particle physics at very high energy is presented, focusing on applications of models of deformed Lorentz symmetry to high-energy astrophysics.
Gonzalez-Mestres, Luis
arxiv   +6 more sources

The Phenomena of High Energy Astrophysics [PDF]

, 2003
A brief summary of some highlights in the study of high energy astrophysical sources over the past decade is presented. It is argued that the great progress that has been made derives largely from the application of new technology to observation ...
Blandford, R. D.
core   +4 more sources

TESTING LORENTZ SYMMETRY USING HIGH ENERGY ASTROPHYSICS OBSERVATIONS. [PDF]

Symmetry (Basel), 2017
We discuss some of the tests of Lorentz symmetry made possible by astrophysical observations of ultrahigh energy cosmic rays, gamma-rays, and neutrinos.
Stecker FW.
europepmc   +4 more sources

High-energy Astrophysics and the Virtual Observatory [PDF]

, 2005
The Virtual Observatory (VO) will revolutionise the way we do Astronomy by allowing easy access to all astronomical data and by making the handling and analysis of datasets at various locations across the globe much simpler and faster.
Abazajian K, Alcock C, Cutri R M, Giavalisco M, Paolo Padovani   +4 more
core   +3 more sources

Problems in High Energy Astrophysics [PDF]

arXiv, 2008
This contribution discusses some of the main problems in high energy astrophysics, and the perspectives to solve them using different types of "messengers": cosmic rays, photons and ...
P. Lipari
arxiv   +3 more sources

High Energy Astrophysics [PDF]

2013, 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.
A K Harding, F Halzen, F M Rieger, G González, H Krawczynski, M Li, N Gehrels, S Ritz, S-N Zhang, T K Gaisser, X-J Bi   +10 more
arxiv   +3 more sources

Very-High Energy Gamma Astrophysics

, 2008
High-energy photons are a powerful probe for astrophysics and for fundamental physics under extreme conditions. During the recent years, our knowledge of the most violent phenomena in the Universe has impressively progressed thanks to the advent of new ...
De Angelis, Alessandro, Mansutti, Oriana, Persic, Massimo   +2 more
core   +3 more sources

High energy cosmic-rays: puzzles, models, and giga-ton neutrino telescopes [PDF]

Pramana 62 (2004) 483-496, 2003
The existence of cosmic rays of energies exceeding 10^20 eV is one of the mysteries of high energy astrophysics. The spectrum and the high energy to which it extends rule out almost all suggested source models. The challenges posed by observations to models for the origin of high energy cosmic rays are reviewed, and the implications of recent new ...
A Achterberg, A M Hillas, Arons, D Band, D Casper, D J Bird, D J Bird, E Boldt, E Waxman, E Waxman, E Waxman, E Waxman, E. Waxman, F Halzen, G L Fogli, G T Zatsepin, J Bednarz, J Bloom, J Hjorth, J N Bahcall, J N Bahcall, J N Bahcall, K Greisen, K Z Stanek, M Drees, M Milgrom, M Nagano, M Schmidt, M Vietri, N Hayashida, N N Efimov, P Bhattacharjee, P Mészáros, R Blandford, T Abu-Zayyad, T J Galama, T Piran, W I Axford, Y Fukuda   +38 more
arxiv   +3 more sources

High-Energy and Ultra-High-Energy Neutrino Astrophysics [PDF]

Universe
The origin of high-energy cosmic rays, and their behavior in astrophysical sources, remains an open question. Recently, new ways to address this question have been made possible by the observation of a new astrophysical messenger, namely neutrinos.
Damiano F. G. Fiorillo
doaj   +2 more sources

High-Energy Astrophysics and Cosmology [PDF]

, 2002
Interfaces between high-energy physics, astrophysics and cosmology are reviewed, with particular emphasis on the important roles played by high-energy cosmic-ray physics. These include the understanding of atmospheric neutrinos, the search for massive cold dark matter particles and possible tests of models of quantum gravity.
Abrams, Abu-Zayyad, Adriani, Aguilar, Ahmad, Ahmad, Ahmad, Ahrens, Amaldi, Amelino-Camelia, Amelino-Camelia, Atkins, Bahcall, Barbot, Battaglia, Bennett, Bennett, Benoit, Benoit, Berezinsky, Bergstrom, Bernabei, Birkel, Blasi, Chung, Coleman, Dazeley, Duchesneau, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Ellis, Evans, Fodor, Fukuda, Giunti, Gonzalez-Mestres, Goodman, Hagiwara, Hannestad, Hawking, Heck, Hooft, John Ellis, Letessier-Selvon, Miyagawa, Norris, Olive, Oyama, Perl-mutter, Riess, Takeda, Weiler, Witten   +64 more
arxiv   +5 more sources