Physics
Scientific paper
Jan 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991soph..131...41m&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 131, Jan. 1991, p. 41-48. Research supported by SERC.
Physics
20
Line Spectra, Magnetohydrodynamic Waves, Soho Mission, Solar Corona, Ultraviolet Spectra, Doppler Effect, Line Of Sight, Magnetic Fields, Plasma Heating, Spectral Line Width, Wave Propagation
Scientific paper
The possibility is examined that Alfven or acoustic waves, propagating through the solar corona and heating the ambient plasma, could be detected through the measurement of ultraviolet line widths. Particular attention is paid to wave heating manifestations which could be detected by the SUMER and CDS instruments on the Solar and Heliospheric Observatory spacecraft (SOHO). CDS may be used to identify the magnetic field geometry in a particular region, since the contribution of wave broadening to total line width depends on the orientation of the magnetic field with respect to the line of sight. The spatial resolution provided by SUMER will make it possible to discriminate between different broadening mechanisms. In the case of lines produced by heavy ions in the low corona, it is found that the line width produced by an Alfven wave flux sufficiently high to heat the active corona corresponds to a Doppler temperature of up to 20 times the kinetic temperature.
Alexander Dave
Harrison Richard A.
McClements K. G.
No associations
LandOfFree
The detection of wave activity in the solar corona using UV line spectra 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 The detection of wave activity in the solar corona using UV line spectra, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The detection of wave activity in the solar corona using UV line spectra will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1896043