Results 91 to 100 of about 73,503 (266)

Cosmic rays: extragalactic and Galactic [PDF]

Proceedings of The 34th International Cosmic Ray Conference — PoS(ICRC2015), 2016
From the analysis of the flux of high energy particles, E > 3 10 18 eV, it is shown that the distribution of the power density of extragalactic rays over energy is of the power law, ¯ q(E) ∝ E −2.7 , with the same index of 2.7 that has the distribution of Galactic cosmic rays before so called ’knee’, E 3 10 15 eV, from the Galaxy because of the ...
openaire   +1 more source

Ultra-High Energy Neutrino Fluxes: New Constraints and Implications

, 2003
We apply new upper limits on neutrino fluxes and the diffuse extragalactic component of the GeV gamma-ray flux to various scenarios for ultra high energy cosmic rays and neutrinos.
, , , , , , , , , , , , , , , , , , , , , , , , , Aloisio R, AMANDA collaboration, ANTARES Collaboration, Balkanov V (BAIKAL Collaboration), Baltrusaitis R M, Barbot C, Barbot C, Berezinsky V S, Berezinsky V S, Berezinsky V S, Blasi P, Chung D J, Clark T A, Cline D B, Dedenko L G, Dmitry V Semikoz, Dokshitzer Yu L, Eberle B, Ellis R K, Fodor Z, Fodor Z, Fodor Z, For a recent review, G nter Sigl, Gorham P W, Gorham P W, Greisen K, Halzen F, Hannestad S, Hou G W, Kachelriess M, Kachelriess M, Kalashev O E, Kalashev O E, Keshet U, Kieda D, Kim H B, Kravchenko I, Kravchenko I, Kuzmin V A, Kuzmin V A, Lee S, Lehtinen N G, Montaruli T (ANTARES Collaboration), Nagano M (ed), Neronov A, Niessen P (the AMANDA Collaboration), Potgieter M S (ed), Resvanis L, Ringwald A, Rubin N, Sasaki M, See, See, See, See, See, See also Ambrosio M (MACRO Collaboration), See Hayashida N, Sigl G, Singh S, Spiering C, Stecker F W, Strong A W, Yoshida S (AGASA Collaboration), Zatsepin G T, Zatsepin G T   +91 more
core   +2 more sources

A common origin of multi-messenger spectral anomaly of galactic cosmic rays [PDF]

, 2023
Yuhua Yao, Xu-Lin Dong, Yi-Qing Guo, Qiang Yuan   +3 more
openalex   +1 more source

Discussion of ‘Robust distance covariance’ by S. Leyder, J. Raymaekers and P. J. Rousseeuw

International Statistical Review, EarlyView.
Hallin Marc, Davide La Vecchia, Hang Liu, Xinyi Xu   +3 more
wiley   +1 more source

Cosmic X-Ray Sources-Galactic and Extragalactic.

The Astronomical Journal, 1966
Instruments carried aboard an Aerobee rocket in April 1965 provided evidence for x-ray emission from the directions of the radio galaxies Cygnus A and M-87 and from the galactic supernova remnant Cassiopeia A. A survey of the Cygnus region revealed a marked decrease in the flux of x-rays from Cygnus XR-1, which was identified in June 1964 as the second
E T, Byram, T A, Chubb, H, Friedman
openaire   +3 more sources

A Possible Common Physics Picture Reflected by the Gamma-Ray Emission of the Galactic Center

The Astrophysical Journal
Long-term observations of the Galactic center by Fermi and HESS have revealed a novel phenomenon: the high-energy gamma-ray spectrum from the gamma-ray source HESS J1745-290 exhibits a double power-law structure.
Lin Nie, Yi-Qing Guo, Si-Ming Liu
doaj   +1 more source

Influence of the source distribution on the age distribution of galactic cosmic rays [PDF]

The age distribution of galactic cosmic rays in the diffusion approximation is calculated. The influence of the scale height of the spatial source distribution on the mean age of particles arriving at the solar system is discussed. The broader the source
Lerche, I., Schlickeiser, R.
core   +1 more source

Galactic cosmic ray effects on iron and nickel isotopes in iron meteorites [PDF]

, 2020
David L. Cook, I. Leya, Maria Schönbächler   +2 more
openalex   +1 more source

The AMS-02 Cosmic-Ray Deuteron Flux is Consistent with a Secondary Origin

The Astrophysical Journal Letters
The recent measurements of cosmic-ray (CR) deuteron fluxes by AMS-02 show that the rigidity dependence of deuterons is similar with that of protons but flatter than ^3 He, which has been attributed to the existence of primary deuterons with abundance ...
Qiang Yuan, Yi-Zhong Fan
doaj   +1 more source

High energy galactic gamma radiation from cosmic rays concentrated in spiral arms [PDF]

A model for the emission of high energy ( 100 MeV) gamma rays from the galactic disk was developed and compared to recent SAS-2 observations. In the calculation, it is assumed that (1) the high energy galactic gamma rays result primarily from the ...
Bignami, G. F., Fichtel, C. E., Kniffen, D. A., Thompson, D. J.   +3 more
core   +1 more source