scholarly journals Solar Polar Field Reversals and Secular Variation of Cosmic Ray Intensity

1980 ◽  
Vol 91 ◽  
pp. 79-86
Author(s):  
H. S. Ahluwalia
Keyword(s):  
Solar Activity ◽  
Cosmic Ray ◽  
Activity Cycle ◽  
Solar Activity Cycle ◽  
Minimum Level ◽  
Solar Activity Minimum ◽  
Cosmic Ray Intensity ◽  
Activity Cycles ◽  
Solar Activity Cycles ◽  
Characteristic Manner

The profile of the well-known 11-year variation of the cosmic ray intensity appears to depend upon the emerging solar polar magnetic field regime in a very characteristic manner. During the solar activity cycle 19, the cosmic ray intensity takes about seven years to recover to its solar activity minimum level. But during the solar activity cycle 20, the recovery takes place in only about two years. It appears that these characteristic recovery modes are obtainable every other solar activity cycle. We are led to suggest two model configurations for the heliosphere. We believe that an “open” heliosphere model applies to solar activity cycles 18 and 20. A “closed” heliosphere model is obtainable during solar activity cycles 17 and 19. Our results are discussed.

Galactic Cosmic Ray Intensity in the Upcoming Minimum of the Solar Activity Cycle

2018 ◽  
Vol 58 (2) ◽  
pp. 169-177 ◽  
Author(s):  
M. B. Krainev ◽  
G. A. Bazilevskaya ◽  
M. S. Kalinin ◽  
A. K. Svirzhevskaya ◽  
N. S. Svirzhevskii
Keyword(s):  
Solar Activity ◽  
Cosmic Ray ◽  
Activity Cycle ◽  
Solar Activity Cycle ◽  
Cosmic Ray Intensity ◽  
Galactic Cosmic Ray

scholarly journals Deriving the solar activity cycle modulation on cosmic ray intensity observed by Nagoya muon detector from October 1970 until December 2012

2016 ◽  
Vol 12 (S328) ◽  
pp. 130-133 ◽  
Author(s):  
Rafael R. S. de Mendonça ◽  
Carlos. R. Braga ◽  
Ezequiel Echer ◽  
Alisson Dal Lago ◽  
Marlos Rockenbach ◽  
...  
Keyword(s):  
Solar Activity ◽  
Cosmic Ray ◽  
Activity Cycle ◽  
Solar Activity Cycle ◽  
Atmospheric Temperature ◽  
Muon Detector ◽  
Natural Phenomena ◽  
Cosmic Ray Intensity ◽  
Temperature Changes ◽  
Muon Intensity

AbstractIt is well known that the cosmic ray intensity observed at the Earth's surface presents an 11 and 22-yr variations associated with the solar activity cycle. However, the observation and analysis of this modulation through ground muon detectors datahave been difficult due to the temperature effect. Furthermore, instrumental changes or temporary problems may difficult the analysis of these variations. In this work, we analyze the cosmic ray intensity observed since October 1970 until December 2012 by the Nagoya muon detector. We show the results obtained after analyzing all discontinuities and gaps present in this data and removing changes not related to natural phenomena. We also show the results found using the mass weighted method for eliminate the influence of atmospheric temperature changes on muon intensity observed at ground. As a preliminary result of our analyses, we show the solar cycle modulation in the muon intensity observed for more than 40 years.

Variations of the cosmic-ray intensity andK p data in the solar-activity cycle no. 19

1974 ◽  
Vol 11 (1) ◽  
pp. 29-32
Author(s):  
O. Filisetti ◽  
G. Lovera ◽  
C. Oldano ◽  
P. G. Tedde
Keyword(s):  
Solar Activity ◽  
Cosmic Ray ◽  
Activity Cycle ◽  
Solar Activity Cycle ◽  
Cosmic Ray Intensity

Distribution of the number of strong earthquakes and the intensity of space rays during the solar activity cycle

2020 ◽  
Author(s):  
Valery L. Yanchukovsky ◽  
◽  
Anastasiya Yu. Belinskaya ◽  
Keyword(s):  
Solar Activity ◽  
Cosmic Rays ◽  
Cosmic Ray ◽  
Activity Cycle ◽  
Solar Activity Cycle ◽  
Strong Earthquakes ◽  
Cosmic Ray Intensity ◽  
Relationship Of ◽  
The Relationship

The relationship of Earth's seismicity with solar activity is investigated using the results of continuous long–term observations of cosmic ray intensity, solar activity and the number of strong earthquakes. Modulation of the flux of cosmic rays is used as information on the level of solar activity, processes on the Sun and interplanetary medium. The distribution of the number of sunspots, the intensity of cosmic rays and the number of strong earthquakes in the solar cycle is presented.

COSMIC RAY FLUXES IN THE MAXIMUM PHASE OF SOLAR ACTIVITY CYCLES

2005 ◽  
Vol 20 (29) ◽  
pp. 6669-6671
Author(s):  
G. A. BAZILEVSKAYA ◽  
V. S. MAKHMUTOV ◽  
Y. I. STOZHKOV ◽  
A. K. SVIRZHEVSKAYA ◽  
N. S. SVIRZHEVSKY
Keyword(s):  
Solar Activity ◽  
Cosmic Rays ◽  
Cosmic Ray ◽  
Lebedev Physical Institute ◽  
Activity Maximum ◽  
Cosmic Ray Intensity ◽  
Cosmic Ray Modulation ◽  
Wide Energy ◽  
Activity Cycles ◽  
Solar Activity Cycles

The homogeneous series of primary cosmic ray intensity with energy > 100 MeV is obtained in the long-term balloon measurements of charged particle fluxes performed by Lebedev Physical Institute. Supplementing these data with those of neutron monitors enables us to study the cosmic ray modulation on the wide energy base during more than four solar activity cycles. In the periods of solar activity maximum a transition from cosmic ray decrease to recovery occurs. Changes in fluxes of cosmic rays of lower energy lag behind the changes in fluxes of cosmic rays of higher energy producing an energy hysteresis. After a while cosmic ray fluxes of all energies start to recover. In the cycles 20 and 22 the periods of transition from decline to recovery were shorter than in the cycles 21 and 23. This may be indicative of more complicated passage from the cosmic ray drift in the A > 0 conditions to the drift in the A < 0 conditions than vice versa.

Variation of the cosmic ray intensity in an 11-yr solar activity cycle: Experiment and theory

JETP Letters ◽  
2014 ◽  
Vol 98 (12) ◽  
pp. 769-772 ◽  
Author(s):  
G. F. Krymsky ◽  
P. Yu. Gololobov ◽  
P. A. Krivoshapkin ◽  
S. K. Gerasimova ◽  
V. G. Grigoryev ◽  
...  
Keyword(s):  
Solar Activity ◽  
Cosmic Ray ◽  
Activity Cycle ◽  
Solar Activity Cycle ◽  
Cosmic Ray Intensity
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