Large-scale structure of the interplanetary magnetic field between 1 and 0. 3 AU during the primary mission of Helios 1

Journal Article · Wed Nov 01 04:00:00 EST 1978 · J. Geophys. Res.; (United States)

DOI:https://doi.org/10.1029/JA083iA11p05161· OSTI ID:6588473

Mariani, F; Ness, N F; Burlaga, L F; Bavassano, B; Villante, U

The macroscale and mesoscale structure of the interplanetary magnetic field during the primary mission of Helios 1 is discussed. The radial field component behaves essentially in agreement with Parker's theory. The transverse component shows a larger variability than the radial component; it radial variation is in good agreement with Parker's theory for high speeds, but some deviation is found for low speeds. The radial variation of the field variance is also studied. Its dependence upon the heliocentric distance r is expressed by the law r/sup 3/, which is necessary but not sufficient for Alfven waves. The available data do not allow a unique interpretation of the r/sup -3/ dependence. No big differences are observed between low (< or =500km/s) and high (> or =600 km/s) solar wind velocity regimes.

• Research Organization: NASA Goddard Space Flight Center, Greenbelt, Maryland 20771
• OSTI ID: 6588473
• Journal Information: J. Geophys. Res.; (United States), Journal Name: J. Geophys. Res.; (United States) Vol. 83:A11; ISSN JGREA
• Country of Publication: United States
• Language: English

Related Subjects

640107* -- Astrophysics &amp; Cosmology-- Planetary Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ALFVEN WAVES
ANISOTROPY
HYDROMAGNETIC WAVES
INTERPLANETARY MAGNETIC FIELDS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELDS
SOLAR ACTIVITY
SOLAR WIND
VARIATIONS