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Now showing items 21-30 of 102
New insights from modeling the neutral heliospheric current sheet
(Springer, 2015)
Recently, the modulation of cosmic rays in the heliosphere
has increasingly been studied by solving the well
known transport equation via an approach based on stochastic
differential equations. This approach, which is ...
Modulation of galactic cosmic rays in a north-south asymmetrical heliosphere
(Elsevier, 2011)
Observations made with the two Voyager spacecraft confirmed that the solar wind decelerates to form the heliospheric termination shock. Voyager 1 crossed this termination shock at ∼94 AU in 2004, while Voyager 2 crossed ...
Modelling of low-energy galactic electrons in the heliosheath
(Elsevier, 2011)
The modulation of cosmic ray electrons in the heliosphere plays an important role in improving our understanding and assessment of the processes applicable to low-energy galactic electrons. A full three-dimensional numerical ...
Modelling of galactic carbon in an asymmetrical heliosphere: effects of asymmetrical modulation conditions
(Elsevier, 2012)
Observations of galactic cosmic rays (GCRs) from the two Voyager spacecraft inside the heliosheath indicate significant differences between them, suggesting that in addition to a possible global asymmetry in the north–south ...
Time-dependent cosmic ray modulation
(Elsevier, 2011)
Time-dependent cosmic ray modulation is calculated over multiple solar cycles using our well established two-dimensional time-dependent modulation model. Results are compared to Voyager 1, Ulysses and IMP cosmic ray ...
Three-dimensional wavy heliospheric current sheet drifts
(IOP publishing, 2012)
We present an analytic method to determine the directions of the three-dimensional (3D) heliospheric current sheet (HCS) drift for any tilt angle based on Parker's heliospheric magnetic field and compare it with published ...
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 ...
The creation of synthetic digital ground-truth images of historic cosmic ray data recordings
(Springer, 2017)
The aim of this paper is to develop a set of algorithms for the automated construction of synthetic digital ground truth images from historic cosmic ray recordings. These images can subsequently be used to test data ...
Is the highest cosmic-ray flux yet to come?
(Springer, 2014)
The recent 2009 solar-minimum period was characterized by a record-setting high
Galactic cosmic-ray flux observed at Earth. This, along with the unexpected low heliospheric
magnetic-field magnitude, caused this period ...
Implications of Voyager 1 observations beyond the heliopause for the local interstellar electron spectrum
(IOP Publishing, 2014)
Cosmic-ray 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 ...