Sidereal anisotropy of cosmic rays

The data of the ionization chamber in Yakutsk for 1954 to 1984 are analyzed. A false sidereal variation caused by the second spherical harmonic in cosmic ray distribution was found and it has the amplitude 0.020 plus or minus 0.002%. The sidereal anisotropy with a very small amplitude (not more than 0.005%) was observed to exist

Long-term modulation of galactic cosmic rays in high-energy region

The results of continuous registration of the cosmic ray muon intensity on the ground and underground at 7, 20 and 60 m w.e. depths in Yakutsk for 1957 to 1983 are presented. In years of the solar activity maximum in cosmic ray density were found two minima or two-stepped decrease. The second intensity minimum appears to be not the result of the inversion of the general magnetic field of the Sun but caused by the increase of the solar wind speed

Change of cosmic ray anisotropy with solar activity

Muon telescope data at various depths underground in Yakutsk within energy range 10 to 300 GeV for 1957 to 1984 are analyzed. The 22-year variation of the interplanetary magnetic field aligned component is found. The variation is caused by interaction of heliomagnetosphere with the local galactic field and interstellar wind

Investigation of Small Currents of Galactic Cosmic Rays

Abstract The experimental investigation results of appearance frequency dynamics of small currents (anisotropy) of galactic cosmic rays (GCR) are presented. It is found that the main and long periods with stable small currents (< 0,2 %) are observed in solar activity minima independing on the polarity of the general magnetic field of the Sun and the interplanetary neutral surface configuration. However, at the decay phase of the even solar cycles, recurrence solar wind streams are accompanied by the appearance of the period with very small currents. The decrease of galactic cosmic ray currents is observed mainly with distance of the Earth from the neutral surface in high-speed streams with the negative sign of the magnetic field. It is shown that the appearance of the stable period with small currents by the cosmic ray neutron component is accompanied by the similar decrease of the anisotropy by the muon component up to the 100 GeV energy