Physics
Scientific paper
Jan 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ssrv...87..149c&link_type=abstract
Space Science Reviews, v. 87, Issue 1/2, p. 149-152 (1999).
Physics
11
AlfvÉ, N Waves, Corona, Ion Cyclotron Resonance, Spectroscopy, Uv Radiation
Scientific paper
Using empirical velocity distributions derived from UVCS and SUMER ultraviolet spectroscopy, we construct theoretical models of anisotropic ion temperatures in the polar solar corona. The primary energy deposition mechanism we investigate is the dissipation of high frequency (10-10000 Hz) ion-cyclotron resonant Alfvén waves which can heat and accelerate ions differently depending on their charge and mass. We find that it is possible to explain the observed high perpendicular temperatures and strong anisotropies with relatively small amplitudes for the resonant waves. There is suggestive evidence for steepening of the Alfvén wave spectrum between the coronal base and the largest heights observed spectroscopically. Because the ion-cyclotron wave dissipation is rapid, even for minor ions like O5+, the observed extended heating seems to demand a constantly replenished population of waves over several solar radii. This indicates that the waves are generated gradually throughout the wind rather than propagated up from the base of the corona.
Cranmer Steven R.
Field George B.
Kohl John L.
No associations
LandOfFree
Spectroscopic Constraints on Models of Ion-cyclotron Resonance Heating in the Polar Solar Corona 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 Spectroscopic Constraints on Models of Ion-cyclotron Resonance Heating in the Polar Solar Corona, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectroscopic Constraints on Models of Ion-cyclotron Resonance Heating in the Polar Solar Corona will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1277426