Results 41 to 50 of about 4,151 (91)

Convolutional Neural Network Processing of Radio Emission for Nuclear Composition Classification of Ultra-High-Energy Cosmic Rays

Universe
Ultra-high-energy cosmic rays (UHECRs) are extremely rare energetic particles of ordinary matter in the Universe, traveling astronomical distances before reaching the Earth’s atmosphere.
Tudor Alexandru Calafeteanu, P. G. Isar, E. Slușanschi   +2 more
semanticscholar   +1 more source

7th Conference on High Energy Astrophysics in Southern Africa (HEASA2019)

, 2020
HEASA 2019 was the seventh conference in the annual series “High Energy Astrophysics in Southern Africa”. Its goal was to bring together scientists from the southern African region, the African continent, and around the world with an interest in high ...
Michael Backes, M. Böttcher, D. Buckley, A. Chen, P. Meintjes, S. Razzaque   +5 more
semanticscholar   +1 more source

Possible explanation of indirect gamma ray signatures from hidden sector fermionic dark matter [PDF]

, 2016
We propose the existence of a hidden or dark sector besides the standard model (SM) of particle physics, whose members (both fermionic and bosonic) obey a local SU(2)$_{\rm H}$ gauge symmetry while behaving like a singlet under the SM gauge group ...
Banik, Amit Dutta, Biswas, Anirban, Majumdar, Debasish   +2 more
core   +2 more sources

Galactic-Centre Gamma Rays in CMSSM Dark Matter Scenarios

, 2011
We study the production of gamma rays via LSP annihilations in the core of the Galaxy as a possible experimental signature of the constrained minimal supersymmetric extension of the Standard Model (CMSSM), in which supersymmetry-breaking parameters are ...
, A. Abdo ., A. Burkert, A. Burkert, A. Djouadi, A. Strong, A.V. Kravtsov, A.W. Graham, A.W. Graham, A.W. Graham, A.W. Strong, A.W. Strong, A.W. Strong, A.W. Strong, ALEPH, ATLAS collaboration, BaBar collaboration, CMS collaboration, D. Hooper, D. Maurin, D. Stöckinger, D. Zer-Zion, E. Baltz ., EGRET collaboration, Fermi LAT collaboration, Fermi-LAT collaboration, Fermi-LAT collaboration, Fermi-LAT collaboration, G. Bertone, G. Vertongen, H. Baer, H. Baer, H. Baer, H. Baer, H. Baer ., Heavy Flavor Averaging Group (HFAG) collaboration, I. Moskalenko, J. Einasto, J. Prades, J. Prades, J.F. Navarro, J.F. Navarro ., J.P. Miller, J.R. Ellis, John Ellis, K. Begeman, K.N. Abazajian, Keith A Olive, L. Roszkowski, LEP2 SUSY Working Group, M. Cirelli ., M. Su, N. Bernal, N.F. Bell ., O. Buchmueller ., P. Ciafaloni ., P. Ciafaloni ., P. Scott ., P.D. Serpico, R. Aloisio, R.L. Arnowitt, S. Hunter ., S. Moretti, T. Bringmann, T. Nihei, T. Sjöstrand, T. Teubner, The MAGIC collaboration, The VERITAS collaboration, V. Pavlidou, Vassilis C Spanos, WMAP collaboration, Y. Mambrini, Y. Mambrini   +73 more
core   +1 more source

Lorentz violation effects on astrophysical propagation of very high energy photons

, 2010
Lorentz violation (LV) is predicted by some quantum gravity (QG) candidates, wherein the canonical energy-momentum dispersion relation, $E^2=p^2+m^2$, is modified. Consequently, new phenomenons beyond the standard model are predicted.
Ma, Bo-Qiang, Shao, Lijing
core   +1 more source

Dark Matter Annihilation and the PAMELA, FERMI and ATIC Anomalies

, 2012
If dark matter (DM) annihilation accounts for the tantalizing excess of cosmic ray electron/positrons, as reported by the PAMELA, ATIC, HESS and FERMI observatories, then the implied annihilation cross section must be relatively large.
A. A. El Zant, H. Okada, O. Adriani, S. Khalil   +3 more
core   +1 more source

Multimessenger Universe with Gravitational Waves from Binaries [PDF]

, 2019
Future GW detector networks and EM observatories will provide a unique opportunity to observe the most luminous events in the Universe involving matter in extreme environs.
Anand, Shreya, Andreoni, Igor, Bailes, Matthew, Colpi, Monica, Coughlin, Michael, Hall, Evan, Kalogera, Vicky, Kasen, Dan, Kasliwal, Mansi M., Nissanke, Samaya, Sathyaprakash, B. S., Sesana, Alberto   +11 more
core   +1 more source

Cosmic particles with energies above 10^19 eV: a brief review of results

, 2013
Experimental results on ultra-high-energy cosmic rays are briefly reviewed and their interpretation is discussed. The results related to principal observables (arrival directions, energies and composition) of primary particles of extended air showers as ...
Troitsky, Sergey
core   +1 more source

Planning the Future of U.S. Particle Physics (Snowmass 2013): Chapter 4: Cosmic Frontier

, 2014
These reports present the results of the 2013 Community Summer Study of the APS Division of Particles and Fields ("Snowmass 2013") on the future program of particle physics in the U.S.
Beatty, J. J., Buckley, J., Cowen, D. F., Cushman, P., Dodelson, S., Feng, J. L., Galbiati, C., Honscheid, K., Hooper, D., Kaplinghat, M., Kusenko, A., Matchev, K., McKinsey, D., Nelson, A. E., Olinto, A., Profumo, S., Ritz, S., Robertson, H., Rosenberg, L., Sinnis, G., Tait, T. M. P.   +20 more
core   +1 more source

Compact stars with sequential QCD phase transitions

, 2017
Compact stars may contain quark matter in their interiors at densities exceeding several times the nuclear saturation density. We explore models of such compact stars where there are two first-order phase transitions: the first from nuclear matter to a ...
Alford, Mark G., Sedrakian, Armen
core   +2 more sources