SOLAR COSMIC RAY EVENT OF SEPTEMBER 3, 1960

Journal Article · Mon Jan 01 04:00:00 EST 1962 · J. Phys. Soc. Japan

OSTI ID:4740648

Bhavsar, P D

Simultaneous balloon observations from two different latitudes were made during this solar cosmic ray event. A very remarkable feature of delayed propagation of solar cosmic rays through interplanetary space was studied. This delay was caused by the passage of solar cosmic rays through magnetic plasma clouds from previous flares. The delay was energy-dependent and could be easily seen from the time variations of the solar proton energy spectrum and intensity variations at two locations. The spectrum became steep, as the time passed, because of the late arrival of the low energy particles. Most of the time during the event, the intensity of solar cosmic rays at Minneapolis was lower than that at Churchill because of the higher geomagnetic cutoff at Minneapolis. This intensity became comparable at both the stations during the main phase of the magnetic storms, indicating that the geomagnetic cutoff at Minneapolis is removed during the main phase. (auth)

• Research Organization: Univ. of Minnesota, Minneapolis
• NSA Number: NSA-17-012939
• OSTI ID: 4740648
• Journal Information: J. Phys. Soc. Japan, Journal Name: J. Phys. Soc. Japan Vol. Vol: 17: Suppl. A-II
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BALLOONS
CANADA
COSMIC RADIATION
EARTH
ENERGY
MAGNETIC FIELDS
MINNESOTA
MOTION
PHYSICS
PLASMA
PROTONS
SPACE
SPECTRA
SUN
TURBULENCE
VARIATIONS