Time-dependent modulation of galactic cosmic rays by merged interaction regions

1993 ◽  
Vol 98 (A11) ◽  
pp. 19027-19035 ◽  
Author(s):  
J. S. Perko
Keyword(s):  
Cosmic Rays ◽  
Galactic Cosmic Rays ◽  
Time Dependent ◽  
Interaction Regions

Cosmic ray modulation in high and middle latitudes during solar cycles 22 and 23

2015 ◽  
Vol 93 (1) ◽  
pp. 100-104 ◽  
Author(s):  
Kingsley Chukwudi Okpala ◽  
Francisca Nneka Okeke ◽  
Anselem Ikechukwu Ugwuoke
Keyword(s):  
Cosmic Rays ◽  
Dynamic Pressure ◽  
Cosmic Ray ◽  
Galactic Cosmic Rays ◽  
Proton Density ◽  
Solar Cycles ◽  
Middle Latitudes ◽  
Cosmic Ray Modulation ◽  
Interaction Regions

Galactic cosmic rays are modulated in the heliosphere primarily by the global merged interaction regions with intense magnetic fields, which leads to a decrease in galactic cosmic rays throughout the heliosphere. Using long-term averages of solar wind (SW) component parameters in addition to cosmic ray count rates of four neutron monitors with different rigidity cutoffs, we analyzed the effect of these SW components on the count rates under different interplanetary magnetic field (IMF) disturbance levels. From first-order partial correlation, we found that the IMF-B was the most dominant modulating parameter, especially during quiet conditions and the SW dynamic pressure was more effective during disturbed conditions. The influence of more subtle parameters like wind speed, Bz component, and proton density were masked by these dominant parameters: IMF total B, and SW dynamic pressure.

scholarly journals Galactic Cosmic Rays Modulation in the Vicinity of Corotating Interaction Regions: Observations During the Last Two Solar Minima

2019 ◽  
Vol 882 (1) ◽  
pp. 54 ◽  
Author(s):  
Keyvan Ghanbari ◽  
Vladimir Florinski ◽  
Xiaocheng Guo ◽  
Qiang Hu ◽  
Richard Leske
Keyword(s):  
Cosmic Rays ◽  
Galactic Cosmic Rays ◽  
Corotating Interaction Regions ◽  
Interaction Regions

Galactic Cosmic Rays and the Evolution of Light Elements

1998 ◽  
Vol 499 (2) ◽  
pp. 735-745 ◽  
Author(s):  
Martin Lemoine ◽  
Elisabeth Vangioni‐Flam ◽  
Michel Casse
Keyword(s):  
Cosmic Rays ◽  
Galactic Cosmic Rays ◽  
Light Elements
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