Phase mixing of propagating Alfvén waves in a stratified atmosphere: solar spicules

Details Phase mixing of propagating Alfvén waves in a stratified atmosphere: solar spicules Phase mixing of propagating Alfvén waves in a stratified atmosphere: solar spicules

Mar 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012ap%26ss.tmp...96e&link_type=abstract

Astrophysics and Space Science, Online First

Astronomy and Astrophysics

Astrophysics

Sun: Spicules, Alfvén Waves: Phase Mixing, Stratification

Scientific paper

Alfvénic waves are thought to play an important role in coronal heating and solar wind acceleration. Recent observations by Hinode/SOT showed that the spicules mostly exhibit upward propagating high frequency waves. Here we investigate the dissipation of such waves due to phase mixing in stratified environment of solar spicules. Since they are highly dynamic structures with speeds at about significant fractions of the Alfvén phase speed, we take into account the effects of steady flows. Our numerical simulations show that in the presence of stratification due to gravity, damping takes place in space than in time. The exponential damping low, operatorname{exp}(-operatorname{At}3), is valid under spicule conditions, however the calculated damping time is much longer than the reported spicule lifetimes from observations.

Affiliated with

Also associated with

No associations

Rating

Phase mixing of propagating Alfvén waves in a stratified atmosphere: solar spicules 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 Phase mixing of propagating Alfvén waves in a stratified atmosphere: solar spicules, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase mixing of propagating Alfvén waves in a stratified atmosphere: solar spicules will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1365051