Results 81 to 90 of about 260,461 (223)

On the Source Contribution to the Galactic Diffuse Gamma Rays above 398 TeV Detected by the Tibet ASγ Experiment

The Astrophysical Journal Letters
Potential contribution from gamma-ray sources to the Galactic diffuse gamma rays observed above 100 TeV (sub-PeV energy range) by the Tibet AS γ experiment is an important key to interpreting recent multimessenger observations.
S. Kato, D. Chen, J. Huang, T. Kawashima, K. Kawata, A. Mizuno, M. Ohnishi, T. Sako, T. K. Sako, M. Takita, Y. Yokoe   +10 more
doaj   +1 more source

Extrapolation of proton-proton cross section to cosmic ray energies using geometrical model

EPJ Web of Conferences, 2017
We present a new parameterization of the hadronic matter distribution in the geometrical picture of elastic scattering. Our model contains four free energy-dependent parameters that allows us to propose a better description of differential elastic cross ...
Plebaniak Zbigniew, Wibig Tadeusz
doaj   +2 more sources

Estimation of Radiation Exposure for Various Flights from Athens International Airport

Atmosphere
In recent decades, the exposure of aviation crews and passengers to cosmic radiation has been progressively increasing due to the growing need of flights.
Anastasia Tezari, Argyris N. Stassinakis, Panagiota Makrantoni, Pavlos Paschalis, Dimitris Alexandridis, Maria Gerontidou, Helen Mavromichalaki, Pantelis Karaiskos, Norma Crosby, Mark Dierckxsens   +9 more
doaj   +1 more source

Radial oscillations of an electron in a Coulomb attracting field

Open Physics, 2022
The radial motion of an electron in a Coulomb attracting field based on a new theory of the interaction of a particle with an electromagnetic field is studied.
Karapetyan Grigori G.
doaj   +1 more source

The composition of cosmic rays at the knee [PDF]

AIP Conference Proceedings, 2002
36 pages, 10 ...
J. W. Cronin, Karl-Heinz Kampert, T. Shibata, John Matthews, A. A. Moiseev, Jörg R. Hörandel, Jörg R. Hörandel, Michael Cherry, J. Kettler, C. Pryke, A. Sill, S. P. Wakely, David Kieda, S. P. Swordy, Joseph W. Fowler, Joseph W. Fowler, J. Knapp, Glenn Spiczak, Z. Cao, Markus Roth, S. Minnick, Dietrich Müller, Lucy Fortson, Lucy Fortson, S. Coutu, R. Engel, Jim Hinton   +26 more
openaire   +11 more sources

Buoyancy Instabilities in Galaxy Clusters: Convection Due to Adiabatic Cosmic Rays and Anisotropic Thermal Conduction

, 2009
Using a linear stability analysis and two and three-dimensional nonlinear simulations, we study the physics of buoyancy instabilities in a combined thermal and relativistic (cosmic ray) plasma, motivated by the application to clusters of galaxies.
Balbus, Benjamin D. G. Chandran, Berezinskii, Binney, Braginskii, Bîrzan, Chandran, Chandran, Cho, Ciotti, Conroy, Dennis, Eilek, Eliot Quataert, Engelmann, Hayes, Ian J. Parrish, Kelson, Kulsrud, Navarro, Parrish, Parrish, Parrish, Peterson, Prateek Sharma, Quataert, Rasera, Rasera, Schwarzschild, Vernaleo, Zakamska   +30 more
core   +1 more source

ACCELERATION OF COSMIC RAYS AT COSMIC SHOCKS [PDF]

Journal of The Korean Astronomical Society, 2003
Nonthermal particles can be produced due to incomplete thermalization at collisionless shocks and further accelerated to very high energies via diffusive shock acceleration. In a previous study we explored the cosmic ray (CR) acceleration at cosmic shocks through numerical simulations of CR modified, quasi-parallel shocks in 1D plane-parallel geometry ...
openaire   +4 more sources

Suppressing the QCD axion abundance by hidden monopoles

Physics Letters B, 2016
We study the Witten effect of hidden monopoles on the QCD axion dynamics, and show that its abundance as well as isocurvature perturbations can be significantly suppressed if there is a sufficient amount of hidden monopoles.
Masahiro Kawasaki, Fuminobu Takahashi, Masaki Yamada   +2 more
doaj   +1 more source

Constraints on the origin of the ultra-high energy cosmic-rays using cosmic diffuse neutrino flux limits: An analytical approach

, 2012
Astrophysical neutrinos are expected to be produced in the interactions of ultra-high energy cosmic-rays with surrounding photons. The fluxes of the astrophysical neutrinos are highly dependent on the characteristics of the cosmic-ray sources, such as ...
A. Ishihara, Aya Ishihara, G. T. Zatsepin, G. T. Zatsepin, S. Yoshida, Shigeru Yoshida, T. K. Gaisser   +6 more
core   +1 more source

Cosmic-Ray Bursts [PDF]

Physical Review, 1933
In cloud-chamber experiments the frequent occurrence of associated tracks has been observed.(1) It has been pointed out that a simple binary collision cannot explain all the associated tracks.(2)
openaire   +4 more sources