## Search

Now showing items 1-10 of 17

#### Possible evidence for a Fisk-type heliospheric magnetic field. 1. Analyzing Ulysses/Ket electron observations

(IOP Publishing, 2011)

The propagation of energetic charged particles in the heliospheric magnetic field is one of the fundamental problems in heliophysics. In particular, the structure of the heliospheric magnetic field remains an unsolved ...

#### Particle diffusion and localized acceleration in inhomogeneous AGN jets. I. Steady-state spectra

(Oxford University Press, 2015)

We study the acceleration, transport, and emission of particles in relativistic jets. Localized stochastic particle acceleration, spatial diffusion, and synchrotron as well as synchrotron self-Compton (SSC) emission are ...

#### 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, field-aligned frame. We reexamine the ...

#### A stochastic approach to galactic proton propagation: influence of the spiral arm structure

(Elsevier, 2014)

A newly developed numerical code solving Fokker–Planck type transport equations in currently four
dimensions (space plus momentum or energy) and time by means of stochastic differential equations
(SDEs) is applied to the ...

#### Spectral analysis and interpretation of the Y-ray emission from the Starburst NGC 253*

(IOP Publishing, 2012)

Very high energy (VHE; E ≥ 100 GeV) and high-energy (HE; 100 MeV ≤ E ≤ 100 GeV) data from γ-ray observations performed with the H.E.S.S. telescope array and the Fermi-LAT instrument, respectively, are analyzed in order to ...

#### Modeling the modulation of galactic and jovian electrons by stochastic processes

(IOP Publishing, 2011)

We present a newly developed numerical modulation model to study the transport of galactic and Jovian electrons in the heliosphere. The model employs stochastic differential equations (SDEs) to solve the corresponding ...

#### Time-dependent modulation of cosmic rays in the heliosphere

(Springer, 2014)

The time-dependent modulation of galactic cosmic rays in the heliosphere is studied
by computing intensities using a time-dependent modulation model. By introducing recent
theoretical advances in the transport coefficients ...

#### An AB initio model for the modulation of galactic cosmic-ray electrons

(IOP Publishing, 2013)

The modulation of galactic cosmic-ray electrons is studied using an ab initio three-dimensional steady state cosmicraymodulation
code in which the effects of turbulence on both the diffusion and drift of these cosmic-rays ...

#### Sensitivity of cosmic-ray proton spectra to the low-wavenumber behavior of the 2D turbulence power spectrum

(IOP Publishing, 2015)

In this study, a novel ab initio cosmic ray (CR) modulation code that solves a set of stochastic transport equations
equivalent to the Parker transport equation, and that uses output from a turbulence transport code as ...

#### An AB initio model for cosmic-ray modulation

(IOP Publishing, 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 ...