Spectral analysis of neutron monitors and muon telescope daily averages counts shows a
significant higher harmonic (∼ 9 day) of the 27 day variation of galactic cosmic rays (CRs) …

The low-energy cosmic-ray (CR) fluxes measured by space-borne instruments are generally
considered to consist of gradually changing galactic CRs (GCRs) and short-lived solar …

Metal free-floating test masses aboard the future interferometers devoted to gravitational
wave detection in space are charged by galactic and solar cosmic rays with energies $\gt …

Abstract In January 2007, King Abdulaziz University, Jeddah (21.5 o N; 39.2 o E; 14.8 GV),
Saudi Arabia, installed a single channel muon detector for monitoring and studying the …

A single channel cosmic ray muon detector was constructed and installed in Riyadh, central
Saudi Arabia, for studying the variations in the cosmic ray (CR) muon flux. The detector has …

We study the relationship of the 27-day variations of the galactic cosmic ray intensity with
similar variations of the solar wind velocity and the interplanetary magnetic field based on …

The quiet nature of sunspot cycle 24 was disrupted during the second half of 2014 when the
Sun's large-scale field underwent a sudden rejuvenation: the solar mean field reached its …

We show that the higher range of the heliolongitudinal asymmetry of the solar wind speed in
the positive polarity period (A> 0) than in the negative polarity period (A< 0) is one of the …

We study the temporal evolution of the power rigidity spectrum of the first (27days) and the
second (14days) harmonics of the 27-day variation of the galactic cosmic ray intensity …

We develop a three-dimensional (3-D) model of the 27-day variation of galactic cosmic-ray
(GCR) intensity with a spatial variation of the solar wind velocity. A consistent, divergence …