Accession Number:

ADA014613

Title:

Galactic Cosmic Ray Intensity 0.99 to 5.26 A.U. from the Sun.

Descriptive Note:

Progress rept.,

Corporate Author:

IOWA UNIV IOWA CITY DEPT OF PHYSICS AND ASTRONOMY

Report Date:

1975-08-01

Pagination or Media Count:

58.0

Abstract:

The intensity of galactic cosmic radiation in interplanetary space has been observed over the heliocentric radial range 0.99 less than r less than 5.26 a.u. with five Geiger-Mueller tubes on the Jupiter-bound spacecraft Pioneer 10 and over the range 1.00 less than r less than 3.59 a.u. with three similar tubes on Pioneer 11, also bound for Jupiter. The observations span the time period 1972 March 3 to 1974 April 29, near the epoch of minimum solar activity. The contributions of solar energetic particles are eliminated.

Subject Categories:

  • Astrophysics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE