OBSERVATIONS OF SOLAR COSMIC RAYS NEAR THE NORTH MAGNETIC POLE

Journal Article · Thu Sep 01 04:00:00 EDT 1960 · J. Geophys. Research

DOI:https://doi.org/10.1029/JZ065i009p02657· OSTI ID:4125047

Anderson, K A; Enemark, D C

Following a large solar flare on July 16, 1959, fluxes of protons in the energy region 85 to 300 Mev in a steep spectral distribution were observed by means of high-altitude balloons over Resolute Bay, Canada. The flare particle intensity decreased rapidly and quite steadily over a period of several days, but on the occasion of the last flight, launched on July 27, a small flux remained above the high-energy cosmic-ray level. At that time the active region in which the flare occurred was nearly opposite central meridian. The time dependence of the particle intensity followed quite well a t-/sup 3/ law for which t equaled zero about 16 hr after the flare. This low-energy cosmic-ray-producing flare was accompanied by large and complex radio-noise emission, and the particles produced the usual terrestrial effects of long-enduring polar-cap radio blackout, including large riometer effects. During the magnetic storm, at the time the particles were being admitted at forbidden geomagnetic latitudes to the south, the particle intensity was undisturbed over Resolute Bay. (auth)

• Research Organization: State Univ. of Iowa, Iowa City
• Sponsoring Organization: USDOE
• NSA Number: NSA-15-000804
• OSTI ID: 4125047
• Journal Information: J. Geophys. Research, Journal Name: J. Geophys. Research Vol. Vol: 65
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BALLOONS
COSMIC RADIATION
MAGNETIC FIELDS
PHYSICS
PROTONS