Mathematics – Probability
Scientific paper
Dec 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsh31a1654y&link_type=abstract
American Geophysical Union, Fall Meeting 2008, abstract #SH31A-1654
Mathematics
Probability
2134 Interplanetary Magnetic Fields, 2159 Plasma Waves And Turbulence, 7839 Nonlinear Phenomena (4400, 6944)
Scientific paper
The intermittency properties of the magnetic field fluctuations in the fast solar wind (wind speed greater than 550 km/s) are investigated here at various heliocentric distances based on the measurements by the Helios spacecraft during 1974-1981. Seven quantities of normalized PDF (Probability Distribution Function) associated with the magnetic field and its disturbances and the magnetic energy are utilized to characterize the degree of intermittency by fitting the PDF with a Castaing distribution and by using the idea of "Flatness". The fluctuating magnetic fields in a number of fast solar wind events from 0.29 AU to 1.0 AU are analyzed separately to figure out the dependence of intermittency on the heliocentric distances at different time scales. It is apparent that the magnetic field fluctuations are more intermittent at farther distances from the sun. The increase in the degree of intermittency with decreasing time scale is more obvious farther from the sun. Moreover, for a given quantity, the intermittency decreases with increasing time scales and in particular, the PDF of the perpendicular component of perturbed magnetic field is found to approach a Gaussian distribution much more quickly than others at a large time scale. Due to the large value and scattered distribution of "Flatness" in the measured magnetic fields, we suppose that the quantities associated with the perturbed fields is more apparent to represent the spatial variations of intermittent characteristics than those associated with the measured fields.
Tam S. W.
Yang Yadong
No associations
LandOfFree
Intermittency analysis of magnetic field disturbances in the fast solar wind 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 Intermittency analysis of magnetic field disturbances in the fast solar wind, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intermittency analysis of magnetic field disturbances in the fast solar wind will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1247579