Browsing Research Output by Subject "Cosmic rays"
Now showing items 110 of 27

An AB initio model for cosmicray modulation
(IOP Science, 2013)A proper understanding of the effects of turbulence on the diffusion and drift of cosmic rays (CRs) is of vital importance for a better understanding of CR modulation in the heliosphere. This study presents an ab initio ... 
An AB initio model for the modulation of galactic cosmicray electrons
(IOP Science, 2013)The modulation of galactic cosmicray electrons is studied using an ab initio threedimensional steady state cosmicraymodulation code in which the effects of turbulence on both the diffusion and drift of these cosmicrays ... 
The chargesign dependent effect in the solar modulation of cosmic rays
(Elsevier, 2014)The centennial anniversary of the discovery of cosmic rays was in 2012. Since this discovery considerable progress has been made on several aspects related to galactic cosmic rays in the heliosphere. It is known that they ... 
Cosmic rays in the inner heliosphere: insights from observations, theory and models
(Springer, 2011)The global modulation of galactic cosmic rays in the inner heliosphere is determined by four major mechanisms: convection, diffusion, particle drifts (gradient, curvature and current sheet drifts), and adiabatic energy ... 
Cosmicray modulation equations
(Springer, 2011)The temporal variation of the cosmicray intensity in the heliosphere is called cosmicray modulation. The main periodicity is the response to the 11year solar activity cycle. Other variations include a 27day solar ... 
Discovery of the hard spectrum VHE γray source HESS J1641463
(IOP Publishing, 2014)This Letter reports the discovery of a remarkably hard spectrum source, HESS J1641–463, by the High Energy Stereoscopic System (H.E.S.S.) in the very high energy (VHE) domain. HESS J1641–463 remained unnoticed by the usual ... 
Galactic cosmic rays in the outer heliosphere: theory and models
(Springer, 2011)We review recent advances in the field of galactic cosmic ray transport in the distant heliosphere. The advent of globalMHD models brought about a better understanding of the threedimensional structure of the interface ... 
A generalized diffusion tensor for fully anisotropic diffusion of energetic particles in the heliospheric magnetic field
(IOP publishing, 2012)The spatial diffusion of cosmic rays in turbulent magnetic fields can, in the most general case, be fully anisotropic, i.e., one has to distinguish three diffusion axes in a local, fieldaligned frame. We reexamine the ... 
Implications of Voyager 1 observations beyond the heliopause for the local interstellar electron spectrum
(IOP Publishing, 2014)Cosmicray observations made by the Voyager 1 spacecraft outside the dominant modulating influence of the heliosphere finally allow the comparison of computed galactic spectra with experimental data at lower energies. These ...