Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jgr....85.6869v&link_type=abstract
Journal of Geophysical Research, vol. 85, Dec. 1, 1980, p. 6869-6873.
Astronomy and Astrophysics
Astronomy
15
Interplanetary Medium, Magnetohydrodynamic Waves, Plasma Oscillations, Solar Wind Velocity, Wave Propagation, Astronomical Models, Fluctuation Theory, Helios 1, Helios 2, Kinetic Equations, Radial Velocity, Solar System
Scientific paper
The radial evolution of the amplitude of the Alfvenic fluctuations associated with the recurrent high-velocity solar wind streams has been usually considered to be consistent both with undamped fluctuations of solar origin and with waves which saturate at some constant value of the ratio between the wave energy density and the background magnetic field energy density. In the inner solar system the two physical situations can be tentatively distinguished; indeed, according to theoretical models the saturated waves are expected to exhibit a more rapid decrease than the undamped ones. The Helios 1 and Helios 2 spacecraft observed a stream front during March 1976, while they were coaligned along the streamlines. The radial evolution of the wave amplitudes might be considered to be more consistent with saturated waves propagating between 0.41 and 0.65 AU. If true, such a conclusion would lead to the prediction that the contribution of the Alfvenic fluctuations to the energetics of the solar wind expansion may be appreciably larger than was previously estimated.
No associations
LandOfFree
On the role of Alfvenic fluctuations in the inner solar system does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with On the role of Alfvenic fluctuations in the inner solar system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and On the role of Alfvenic fluctuations in the inner solar system will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-755468