Search
Now showing items 1-5 of 5
The modulation of galactic cosmic-ray electrons in the heliosheath
(IOP Publishing, 2010)
Voyager 1 has observed strong increases in the intensities of 2-160 MeV electrons since crossing the termination shock of the heliosphere in 2004 December. Before this time these intensities were submerged below the detector ...
On the pulse shape of ground-level enhancements
(Springer, 2017)
We study the temporal intensity profile, or pulse shape, of cosmic ray ground-level enhancements (GLEs) by calculating the rise (τr) and decay (τd) times for a small subset of all available events. Although these quantities ...
Cosmic-ray yield and response functions in the atmosphere
(American Geophysical Union, 2012)
Since the middle 1950s, neutron monitors have provided a continuous record of the
intensity of secondary atmospheric particles produced by the primary cosmic radiation
above the atmosphere. The number of counts due to ...
Correlation of long-term cosmic-ray modulation with solar activity parameters
(IOP Publishing, 2019)
In this work, we analyze the long-term cosmic-ray modulation observed by the Hermanus neutron monitor, which is the detector with the longest cosmic-ray record, from 1957 July. For our study we use the force-field approximation ...
Spectral index of solar cosmic-ray flux from the analysis of ground-level enhancements
(Elsevier, 2016)
In this work we analyze the ground-level enhancement of the cosmic-ray intensity due to solar energetic particles as observed on 29 September 1989, by using two pairs of standard and lead-free neutron monitors. This enables ...