Luke Drury
(DIAS)
04/08/2015, 14:00
CR-TH
Oral contribution
Cosmic-ray scattering on magnetic turbulence leads to spatial diffusive propagation; if the scattering medium is moving, this will inevitably also
cause changes in the momentum of the particles, so-called diffusive reacceleration. This can be described as diffusion in momentum space. Diffusive reacceleration has often been invoked to explain the peak observed in secondary-to-primary ratios...
Igor Moskalenko
(Stanford University)
04/08/2015, 14:15
CR-TH
Oral contribution
Recent years are marked with many breakthroughs in astrophysics of cosmic rays (CRs), and more are expected in the nearest future. Their proper interpretation is impossible without a well-developed propagation code. The GALPROP project celebrates its 19th anniversary this year. This project is devoted to the development of a self-consistent model for CR propagation in the
Galaxy and...
Ralf-Juergen Dettmar
(Ruhr-University Bochum)
04/08/2015, 14:30
CR-TH
Oral contribution
First results from a new radiocontinuum study of edge-on galaxies are presented. The study is based on data from the CHANG-ES (Continuum HAlos in Nearby Galaxies - an EVLA Survey; PI J. Irwin) project which has observed 35 edge-on galaxies with the Karl G. Jansky Very Large Array (JVLA) in two frequency bands (L- and C-band) and in three array configurations (D, C, B). This survey benefits...
Satyendra Thoudam
(Radboud University)
04/08/2015, 14:45
CR-TH
Oral contribution
Motivated by the recent high-precision measurements of the cosmic-ray energy spectrum and composition by several new-generation experiments, a detailed study to understand the observed properties of cosmic rays up to the highest energies is being conducted. The study involves building a cosmic-ray propagation model in the Galaxy that explains the observed spectra of different cosmic-ray...
David Alain Maurin
(Centre National de la Recherche Scientifique (FR))
04/08/2015, 15:00
CR-TH
Oral contribution
I present the first public release of the USINE code for charged galactic cosmic-ray (GCR) propagation. USINE is a C++ toolbox handling GCR ingredients and several semi-analytic propagation models (1D and 2D). Non-public versions of this code were used in the last 10 years to fit the transport parameters, study radioactive nuclei, antinuclei and possible DM contributions, etc. The...
Dr
Ervin Kafexhiu
(Max-Planck-Institut für Kernphysik)
04/08/2015, 15:15
CR-TH
Oral contribution
Using publicly available Monte Carlo codes as well as compilation of published data on $pp$ interactions for proton kinetic energy below 2 GeV, we parametrize the energy spectra and production rates of $\gamma$-rays by simple but quite accurate ($\leq 20 \%$) analytical expressions in a broad range from the kinematic threshold to PeV energies.
Vladimir Zirakashvili
(IZMIRAN)
04/08/2015, 15:30
CR-TH
Oral contribution
It is shown that astrophysical neutrinos observed by IceCube can be produced by protons accelrated at IIn supernova remnant shocks propagating in the dense circumstellar medium. The nonlinear diffusive shock acceleration model is used for description of particle acceleration. We calculate the neutrino flux produced by a single IIn supernova remnant and the neutrino background produced by all...
Yang Ruizhi
04/08/2015, 15:45
CR-TH
Poster contribution
We use 5 years of Fermi-LAT data towards the Galactic centre giant molecular cloud complex, Sagittarius B, to test questions of how well-mixed the Galactic component of cosmic rays are and the level of the cosmic-ray sea in different parts of the Galaxy. We use dust-opacity maps from the Planck satellite to obtain independent methods for background subtraction, and an estimate for the mass of...
