scholarly journals The 27-Day Cosmic Ray Intensity Variations During Solar Minimum 23/24

Solar Physics ◽  
2013 ◽  
Vol 286 (2) ◽  
pp. 593-607 ◽  
Author(s):  
R. Modzelewska ◽  
M. V. Alania
Keyword(s):  
Solar Minimum ◽  
Cosmic Ray ◽  
Cosmic Ray Intensity

Neutron monitor latitude survey of cosmic ray intensity during the 1986/1987 solar minimum

1989 ◽  
Vol 94 (A2) ◽  
pp. 1459 ◽  
Author(s):  
H. Moraal ◽  
M. S. Potgieter ◽  
P. H. Stoker ◽  
A. J. van der Walt
Keyword(s):  
Neutron Monitor ◽  
Solar Minimum ◽  
Cosmic Ray ◽  
Cosmic Ray Intensity

Solar modulation of galactic cosmic rays near solar minimum (1965)

1968 ◽  
Vol 46 (10) ◽  
pp. S887-S891 ◽  
Author(s):  
V. K. Balasubrahmanyan ◽  
D. E. Hagge ◽  
F. B. McDonald
Keyword(s):  
Cosmic Rays ◽  
Solar Minimum ◽  
Intensity Variation ◽  
Cosmic Ray ◽  
Galactic Cosmic Rays ◽  
Solar Modulation ◽  
Time Behavior ◽  
Cosmic Ray Intensity ◽  
Radial Gradient

The results of the continuous monitoring of the intensity of cosmic rays (of energy > 50 MeV) with identical G-M counter telescopes flown in satellites IMP I, II, and III and OGO-I are presented along with the differential spectrum studies obtained from balloon flights at Fort Churchill and from satellites. A comparison of the time behavior of the G-M counter data with Deep River neutron monitor data suggests the presence of a "hysteresis" type of behavior due to spectral changes occurring near solar minimum. The existence of this "hysteresis" suggests that the radial gradient of cosmic rays near the earth could be much smaller than the ~ 10%/AU obtained by O'Gallagher and Simpson (1967) and O'Gallagher (1967) at higher energies. The long-term intensity variation of cosmic rays seems to follow the Ap index rather closely in phase, in contrast to sunspot numbers which display a pronounced phase difference with cosmic-ray intensity. The differential spectra of protons and He nuclei have been analyzed in terms of two different models for the propagation in the interplanetary medium. The modulations indicated by the present data seem to disagree with a diffusion coefficient proportional to βR where β and R are the velocity and rigidity of the particle respectively (Jokipii 1966).

HIGH-ALTITUDE COSMIC RAY MEASUREMENTS AT FORT CHURCHILL

1960 ◽  
Vol 38 (5) ◽  
pp. 638-641 ◽  
Author(s):  
I. B. McDiarmid ◽  
D. C. Rose
Keyword(s):  
Solar Activity ◽  
High Altitude ◽  
Solar Minimum ◽  
Solar Maximum ◽  
Cosmic Ray ◽  
Geiger Counter ◽  
Low Energy ◽  
High Solar Activity ◽  
Energy Radiation ◽  
Cosmic Ray Intensity

Measurements with rocket-borne Geiger counters have been carried out at altitudes up to 250 km at Fort Churchill, Manitoba. The total primary cosmic ray intensity at a time near a solar maximum has been determined and compared with other measurements taken at times of high solar activity and also with other Geiger counter measurements obtained near a solar minimum. A low-energy radiation was observed whose intensity increased with altitude up to about 25% of the primary intensity at 250 km.

scholarly journals The heliospheric magnetic flux, solar wind proton flux, and cosmic ray intensity during the coming solar minimum

Space Weather ◽  
2014 ◽  
Vol 12 (7) ◽  
pp. 499-507 ◽  
Author(s):  
Charles W. Smith ◽  
K. G. McCracken ◽  
Nathan A. Schwadron ◽  
Molly L. Goelzer
Keyword(s):  
Solar Wind ◽  
Magnetic Flux ◽  
Solar Minimum ◽  
Cosmic Ray ◽  
Proton Flux ◽  
Solar Wind Proton ◽  
Cosmic Ray Intensity

Correlation Between Cosmic-Ray Intensity and Upper Air Pressures and Temperatures

1940 ◽  
Vol 57 (4) ◽  
pp. 336-337 ◽  
Author(s):  
Niel F. Beardsley
Keyword(s):  
Cosmic Ray ◽  
Cosmic Ray Intensity

Solar-cycle phenomena in cosmic-ray intensity: Differences between even and odd cycles

1988 ◽  
Vol 42 (3) ◽  
pp. 233-244 ◽  
Author(s):  
H. Mavromichalaki ◽  
E. Marmatsouri ◽  
A. Vassilaki
Keyword(s):  
Solar Cycle ◽  
Cosmic Ray ◽  
Cosmic Ray Intensity ◽  
Odd Cycles

Solar Magnetic Moment and Diurnal Variation in Cosmic-Ray Intensity

1954 ◽  
Vol 93 (3) ◽  
pp. 551-553 ◽  
Author(s):  
J. Firor ◽  
F. Jory ◽  
S. B. Treiman
Keyword(s):  
Diurnal Variation ◽  
Magnetic Moment ◽  
Cosmic Ray ◽  
Cosmic Ray Intensity
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