Correlation of the quasi-biennial oscillations in galactic cosmic rays and in the solar activity indices

Quasi-biennial oscillation (QBO) is a well-known variation in solar activity, interplanetary parameters, geomagnetic disturbances and cosmic rays. Solar QBO is translated to the space via open magnetic flux and modulates intensity of cosmic rays. The highest negative correlation exists in the QBO of...

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Bibliographic Details
Published in:Journal of physics. Conference series 2015-08, Vol.632 (1), p.12050
Main Authors: Bazilevskaya, G A, Kalinin, M S, Krainev, M B, Makhmutov, V S, Stozhkov, Y I, Svirzhevskaya, A K, Svirzhevsky, N S
Format: Article
Language:English
Subjects:
Cosmic rays
Field strength
Galactic cosmic rays
Magnetic flux
Physics
Quasi-biennial oscillation
Solar activity
Solar oscillations
Solar wind
Solar wind velocity
Wind speed
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Summary:Quasi-biennial oscillation (QBO) is a well-known variation in solar activity, interplanetary parameters, geomagnetic disturbances and cosmic rays. Solar QBO is translated to the space via open magnetic flux and modulates intensity of cosmic rays. The highest negative correlation exists in the QBO of cosmic rays with QBO in the heliospheric magnetic field strength B as well as with QBO in the scalar product BV, where V is the solar wind velocity, cosmic ray being delayed by 1 month. During 50 years of cosmic ray monitoring the QBO periods demonstrated some intermittency. It is argued that the Gnevyshev Gap effect and the step-like changes in the cosmic ray intensity appeared to be a part of QBO in cosmic rays.
ISSN:1742-6588
1742-6596
1742-6596
DOI:10.1088/1742-6596/632/1/012050