scholarly journals THE ROLE OF DRIFT ON DIURNAL ANISOTROPY OF GALACTIC COSMIC RAYS IN DIFFERENT PERIODS OF SOLAR MAGNETIC CYCLE

2016 ◽  
Author(s):  
Krzysztof Iskra
Keyword(s):  
Cosmic Rays ◽  
Galactic Cosmic Rays ◽  
Magnetic Cycle ◽  
Diurnal Anisotropy ◽  
Solar Magnetic Cycle

scholarly journals Quasi-periodic changes in the 3D solar anisotropy of Galactic cosmic rays for 1965–2014

2017 ◽  
Vol 609 ◽  
pp. A32 ◽  
Author(s):  
R. Modzelewska ◽  
M. V. Alania
Keyword(s):  
Magnetic Field ◽  
Solar Wind ◽  
Solar Activity ◽  
Solar Cycle ◽  
Cosmic Rays ◽  
Ecliptic Plane ◽  
Galactic Cosmic Rays ◽  
Magnetic Cycle ◽  
The North ◽  
Solar Magnetic Cycle

Aims. We study features of the 3D solar anisotropy of Galactic cosmic rays (GCR) for 1965−2014 (almost five solar cycles, cycles 20−24). We analyze the 27-day variations of the 2D GCR anisotropy in the ecliptic plane and the north-south anisotropy normal to the ecliptic plane. We study the dependence of the 27-day variation of the 3D GCR anisotropy on the solar cycle and solar magnetic cycle. We demonstrate that the 27-day variations of the GCR intensity and anisotropy can be used as an important tool to study solar wind, solar activity, and heliosphere. Methods. We used the components Ar, Aϕ and At of the 3D GCR anisotropy that were found based on hourly data of neutron monitors (NMs) and muon telescopes (MTs) using the harmonic analyses and spectrographic methods. We corrected the 2D diurnal (~24-h) variation of the GCR intensity for the influence of the Earth magnetic field. We derived the north-south component of the GCR anisotropy based on the GG index, which is calculated as the difference in GCR intensities of the Nagoya multidirectional MTs. Results. We show that the behavior of the 27-day variation of the 3D anisotropy verifies a stable long-lived active heliolongitude on the Sun. This illustrates the usefulness of the 27-day variation of the GCR anisotropy as a unique proxy to study solar wind, solar activity, and heliosphere. We distinguish a tendency of the 22-yr changes in amplitude of the 27-day variation of the 2D anisotropy that is connected with the solar magnetic cycle. We demonstrate that the amplitudes of the 27-day variation of the north-south component of the anisotropy vary with the 11-yr solar cycle, but a dependence of the solar magnetic polarity can hardly be recognized. We show that the 27-day recurrences of the GG index and the At component are highly positively correlated, and both are highly correlated with the By component of the heliospheric magnetic field.

The role of drift on the diurnal anisotropy and on temporal changes in the energy spectra of the 11-year variation for galactic cosmic rays

2001 ◽  
Vol 27 (3) ◽  
pp. 613-618 ◽  
Author(s):  
M.V. Alania ◽  
R.G. Aslamazashvili ◽  
T.B. Bochorishvili ◽  
K. Iskra ◽  
M. Siluszyk
Keyword(s):  
Cosmic Rays ◽  
Galactic Cosmic Rays ◽  
Temporal Changes ◽  
Energy Spectra ◽  
Diurnal Anisotropy

Decadal Cooling of East Asia – the Role of Aerosols and Ozone Produced by Galactic Cosmic Rays

2018 ◽  
Author(s):  
Natalya A. Kilifarska ◽  
Tijian Wang ◽  
Kostadin Ganev ◽  
Min Xie ◽  
Bingliang Zhuang ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
East Asia ◽  
Galactic Cosmic Rays

About the role of the Sun magnetic field characteristics in the long-term galactic cosmic rays modulation

2009 ◽  
Vol 73 (3) ◽  
pp. 334-336
Author(s):  
R. T. Gushchina ◽  
A. V. Belov ◽  
V. N. Obridko ◽  
B. D. Shelting
Keyword(s):  
Magnetic Field ◽  
Cosmic Rays ◽  
Galactic Cosmic Rays ◽  
The Sun

scholarly journals Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation

Nature ◽  
2011 ◽  
Vol 476 (7361) ◽  
pp. 429-433 ◽  
Author(s):  
Jasper Kirkby ◽  
Joachim Curtius ◽  
João Almeida ◽  
Eimear Dunne ◽  
Jonathan Duplissy ◽  
...  
Keyword(s):  
Cosmic Rays ◽  
Sulphuric Acid ◽  
Atmospheric Aerosol ◽  
Galactic Cosmic Rays
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