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Long term time variability of cosmic rays and possible relevance to the development of life on Earth
An analysis is made of the manner in which the cosmic ray intensity at Earth has varied over its existence and its possible relevance to both the origin and the evolution of life. Much of theExpand
The Anisotropy of Galactic Cosmic Rays as a Product of Stochastic Supernova Explosions
We study the effect of the stochastic character of supernova explosions on the anisotropy of galactic cosmic rays below the knee. We conclude that if the bulk of cosmic rays are produced in supernovaExpand
The Local Bubble in the interstellar medium and the origin of the low energy cosmic rays
An analysis of the energy spectra of cosmic rays and particularly the precise data from the AMS-02 experiment support the view about the important role of the Local Bubble in the nearby interstellarExpand
Models for the Origin of the Knee in the Cosmic-Ray Spectrum
A sudden steepening of the cosmic-ray energy spectrum (the knee) is observed at an energy of about 3 PeV (1 PeV = $10^{15}$ eV). The experimental study of the PeV cosmic rays has intensified greatlyExpand
Clouds, solar irradiance and mean surface temperature over the last century
The undoubted ‘global warming’ over the past half century or so has focused at9 tention on the role of changes in solar irradiance (and the solar wind) on a variety 10 of timescales and the relevanceExpand
Fine structure in the gamma-ray sky
The EGRET results for gamma-ray intensities in and near the Galactic Plane have been analysed in some detail. Attention has been concentrated on energies above 1 GeV and the individual intensities inExpand
The Origin of the Knee in the Cosmic-Ray Energy Spectrum
A sudden steepening of the cosmic-ray energy spectrum (the knee) is observed at an energy of about 3 PeV (1 PeV = 10$^{15}$eV). The recent results on extensive air showers allow us to conclude that:Expand
The visibility of shell-type supernova remnants in gamma rays
The idea that the shocks from supernova remnants (SNR) expanding into the interstellar medium (ISM) accelerate CR is still popular one but a number of authors have drawn attention to the fact thatExpand
Cosmic ray anisotropies to 5 PeV
Several large cosmic ray (CR) detectors have recently provided data on the arrival directions of CR, which taken together with previous data recorded over many decades allow the amplitude and phaseExpand
The Origin of Cosmic Rays
It is generally regarded that the bulk of cosmic rays originate in the Galaxy and that those below the 'knee' (the rapid steepening in the energy spectrum) at a few PeV come from Galactic supernovae,Expand