Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975ap%26ss..36..383r&link_type=abstract
Astrophysics and Space Science, vol. 36, Sept. 1975, p. 383-405. Research supported by the Deutsche Forschungsgemeinschaft.
Astronomy and Astrophysics
Astrophysics
7
Azimuth, Equations Of Motion, Interplanetary Magnetic Fields, Magnetohydrodynamic Waves, Method Of Characteristics, Solar Wind Velocity, Approximation, Astronomical Models, Gas Streams, Graphs (Charts), Leading Edges, Magnetic Field Configurations, Maxwell Equation, Ray Tracing, Wave Propagation
Scientific paper
Applying an Alfvén-Wave-Extended-QRH-approximation and the method of charac- teristics, we solve the equations of motion for outwardly propagating Alfvén waves analytically for three different cases of an azimuthal dependence of the background solar wind, (a) for a pure fast-slow stream configuration, (b) for the situation where the high-speed stream originates from a diverging magnetic field region, and (c) for the case of (b) and an initially decreasing density con- figuration (`coronal hole'). The reaction of these waves on the background state as well as mode- mode coupling effects are neglected. These three solar wind models are discussed shortly. For the superimposed Alfvén waves we find, on an average, that there is a strong azimuthal dependence of all relevant wave parameters which, correlated with the azimuthal distributions of the solar wind variables, leads to good agreements with observations. The signature of high-speed streams and these correlations could clearly indicate solar wind streams originating from `coronal holes'. Con- trary to the purely radial dependent solar wind, where outwardly propagating Alfvén waves are exclusively refracted towards the radial direction, we now find a refraction nearly perpendicular to the direction of the interplanetary magnetic field in the compression region and closely towards the magnetic field direction down the trailing edge and in the low-speed regime
No associations
LandOfFree
Wave-trains in the solar wind. III - Alfven waves in the azimuthally-dependent interplanetary medium 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 Wave-trains in the solar wind. III - Alfven waves in the azimuthally-dependent interplanetary medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wave-trains in the solar wind. III - Alfven waves in the azimuthally-dependent interplanetary medium will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-909182