On the index of cosmic ray fluctuations at neutron monitor energies

Details On the index of cosmic ray fluctuations at neutron monitor energies On the index of cosmic ray fluctuations at neutron monitor energies

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995coska..25....5k&link_type=abstract

Contributions of the Astronomical Observatory Skalnate Pleso, Volume 25, p. 5-12

Astronomy and Astrophysics

Astronomy

6

Cosmic Rays, Power Spectra, Interplanetary Magnetic Fields, Solar Wind, Density Distribution, Neutron Counters, Heliosphere, Spectral Energy Distribution, Variability, Geomagnetism, Spectral Correlation, Frequency Ranges

Scientific paper

Inhomogeneities of the interplanetary magnetic field (IMF), initiated from the Sun, influence cosmic ray (CR) fluctuations. An attempt to define the index of cosmic ray fluctuation variability based on 5-min data from two neutron monitors is made. It is suggested that the integral of the power spectrum density of cosmic ray fluctuations is used over time scales where the interplanetary magnetic field strongly influences cosmic rays at neutron monitor energies. This integral P1 ('the cosmic ray fluctuation variability index') can be employed as one of the parameters in predicting geomagnetic activity.

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