Results 21 to 30 of about 401,654 (242)

Models for galactic cosmic-ray propagation [PDF]

Advances in Space Research, 2001
A new numerical model of particle propagation in the Galaxy has been developed, which allows the study of cosmic-ray and gamma-ray production and propagation in 2D or 3D, including a full reaction network. This is a further development of the code which has been used for studies of cosmic ray reacceleration, Galactic halo size, antiprotons and ...
Strong, A. W., Moskalenko, I. V.
openaire   +2 more sources

The influence of galactic cosmic rays on ion-neutral hydrocarbon chemistry in the upper atmospheres of free-floating exoplanets [PDF]

, 2014
The authors highlight financial support of the European Community under the FP7 by an ERC starting grant.Cosmic rays may be linked to the formation of volatiles necessary for prebiotic chemistry.
P. B. Rimmer, C. Bilger, Rimmer, P.B., Helling, C., Bilger, C., Ch. Helling   +5 more
core   +1 more source

Anisotropy and Corotation of Galactic Cosmic Rays [PDF]

Science, 2006
The intensity of Galactic cosmic rays is nearly isotropic because of the influence of magnetic fields in the Milky Way. Here, we present two-dimensional high-precision anisotropy measurement for energies from a few to several hundred teraelectronvolts (TeV), using the large data sample of the Tibet Air Shower Arrays.
M, Amenomori, S, Ayabe, X J, Bi, D, Chen, S W, Cui, , Danzengluobu, L K, Ding, X H, Ding, C F, Feng, Zhaoyang, Feng, Z Y, Feng, X Y, Gao, Q X, Geng, H W, Guo, H H, He, M, He, K, Hibino, N, Hotta, Haibing, Hu, H B, Hu, J, Huang, Q, Huang, H Y, Jia, F, Kajino, K, Kasahara, Y, Katayose, C, Kato, K, Kawata, , Labaciren, G M, Le, A F, Li, J Y, Li, Y-Q, Lou, H, Lu, S L, Lu, X R, Meng, K, Mizutani, J, Mu, K, Munakata, A, Nagai, H, Nanjo, M, Nishizawa, M, Ohnishi, I, Ohta, H, Onuma, T, Ouchi, S, Ozawa, J R, Ren, T, Saito, T Y, Saito, M, Sakata, T K, Sako, T, Sasaki, M, Shibata, A, Shiomi, T, Shirai, H, Sugimoto, M, Takita, Y H, Tan, N, Tateyama, S, Torii, H, Tsuchiya, S, Udo, B, Wang, H, Wang, X, Wang, Y G, Wang, H R, Wu, L, Xue, Y, Yamamoto, C T, Yan, X C, Yang, S, Yasue, Z H, Ye, G C, Yu, A F, Yuan, T, Yuda, H M, Zhang, J L, Zhang, N J, Zhang, X Y, Zhang, Y, Zhang, Yi, Zhang, , Zhaxisangzhu, X X, Zhou   +84 more
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COSMIC RAY PROPAGATION IN GALACTIC TURBULENCE [PDF]

The Astrophysical Journal, 2014
We revisit propagation of galactic cosmic rays (CRs) in light of recent advances in CR diffusion theory in realistic interstellar turbulence. We use a tested model of turbulence in which it has been shown that fast modes dominate scattering of CRs. As a result, propagation becomes inhomogeneous and environment dependent.
Evoli, Carmelo, Yan, Huirong
openaire   +2 more sources

The Acceleration of Galactic Cosmic Rays [PDF]

Symposium - International Astronomical Union, 1981
Although it is clear that cosmic rays are of considerable astrophysical significance we know surprisingly little about their origin(s), their mode(s) of propagation and escape from the galaxy, and even of their general properties. Practically nothing is known of the composition and energy spectra of different species at energies below about 200 MeV ...
openaire   +3 more sources

Changes in cloud cover associated with Forbush decreases of galactic cosmic rays [PDF]

, 2001
The results of a study to quantify the relationship between cloud cover and short-term Forbush decreases (FD) of galactic cosmic ray flux are presented. Using an extensive record of global satellite-derived cloud products from the International Satellite
Kniveton, DR, Martin C. Todd, Todd, MC, Martin Todd (4462747), Dominic Kniveton (4461616), Dominic R. Kniveton   +5 more
core   +1 more source

Formation of the Cosmic-Ray Halo: Galactic Spectrum of Primary Cosmic Rays [PDF]

The Astrophysical Journal, 2020
Abstract A self-consistent model of a one-dimensional cosmic-ray (CR) halo around the Galactic disk is formulated with the restriction of a minimum number of free parameters. It is demonstrated that the turbulent cascade of MHD waves does not necessarily play an essential role in the halo formation.
V. A. Dogiel, A. V. Ivlev, D. O. Chernyshov, C.-M. Ko   +3 more
openaire   +3 more sources

The origin of cosmic rays and TeV gamma-ray astronomy

EPJ Web of Conferences, 2013
Cosmic rays are accelerated to high energies in Galactic and extragalactic objects like Supernova remnants (SNR) and active galactic nuclei (AGN). How these accelerators work and how efficient they accelerate different types of particles to energies of ...
Maier Gernot
doaj   +1 more source

Latest results from the DAMPE space mission [PDF]

EPJ Web of Conferences, 2023
The space-based DAMPE (DArk Matter Particle Explorer) particle detector has been taking data for more than 7 years since its successful launch in December 2015.
Cagnoli Irene, De Mitri Ivan, Silveri Leandro   +2 more
doaj   +1 more source

Numerical simulations of mixing conditions and aerosol dynamics in the CERN CLOUD chamber [PDF]

, 2012
To study the effect of galactic cosmic rays on aerosols and clouds, the Cosmics Leaving OUtdoor Droplets (CLOUD) project was established. Experiments are carried out at a 26.1 m3 tank at CERN (Switzerland).
Voigtländer, Jens, Duplissy, Jonathan, Rondo, Linda, Kürten, Christoph Andreas, Stratmann, Frank   +4 more
core   +1 more source