Interplanetary protons (e/sub p/ approx = 1 MeV) 1973-1986 and out to 22. 4 Au. Progress report

Technical Report · Sat Aug 01 04:00:00 EDT 1987

OSTI ID:5966850

Van Allen, J A

This paper uses a homogeneous body of data on mean annual values N of the interplanetary intensity of protons (0.61 < Ep < 3.41 MeV) in the period 1973-1986 and over the heliocentric radial distance range 1.0 < r < 22.4 AU. It is found that the quantity N(r-sq) is well correlated with the annual mean sunspot number, with the exception of anomalously low values in 1979, 1980 (in particular), and 1981. The anomaly is attributed to a gross change in the interplanetary magnetic field associated with reversal of the polarity of the sun's polar field.

• Research Organization: Iowa Univ., Iowa City (USA). Dept. of Physics and Astronomy
• OSTI ID: 5966850
• Report Number(s): AD-A-183842/4/XAB; U-OF-IOWA-87-26
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics &amp; Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ANNUAL VARIATIONS
BARYONS
ELEMENTARY PARTICLES
FERMIONS
HADRONS
INTERPLANETARY SPACE
MAGNETIC FIELDS
NUCLEONS
PROTONS
RADIATIONS
SOLAR ACTIVITY
SOLAR PARTICLES
SOLAR PROTONS
SOLAR RADIATION
SPACE
STARSPOTS
STELLAR ACTIVITY
STELLAR RADIATION
SUNSPOTS
VARIATIONS