Sunspot seismic halos generated by fast MHD wave refraction

Details Sunspot seismic halos generated by fast MHD wave refraction Sunspot seismic halos generated by fast MHD wave refraction

2009-05-19

arxiv.org/abs/0905.3060v2

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

Accepted by Astronomy and Astrophysics Letters

Scientific paper

We suggest an explanation for the high-frequency power excess surrounding active regions known as seismic halos. The idea is based on numerical simulations of magneto-acoustic waves propagation in sunspots. We propose that such an excess can be caused by the additional energy injected by fast mode waves refracted in the higher atmosphere due to the rapid increase of the Alfven speed. Our model qualitatively explains the magnitude of the halo and allows to make some predictions of its behavior that can be checked in future observations.

Affiliated with

Also associated with

No associations

Rating

Sunspot seismic halos generated by fast MHD wave refraction 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 Sunspot seismic halos generated by fast MHD wave refraction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sunspot seismic halos generated by fast MHD wave refraction will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-699668