Physics
Scientific paper
Oct 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011epsc.conf..236z&link_type=abstract
EPSC-DPS Joint Meeting 2011, held 2-7 October 2011 in Nantes, France. http://meetings.copernicus.org/epsc-dps2011, p.236
Physics
Scientific paper
We aim to study large-scale shallow water waves in the tachoclines of rapidly rotating stars and their connection to the periodicity and the formation of starspots at high latitudes. Shallow water magnetohydrodynamic equations are used to study the dynamics of largescale waves at the rapidly rotating stellar tachoclines in the presence of toroidal magnetic field. We found that low frequency magnetic Rossby waves tend to locate at poles, but high frequency magnetic Poincaré waves are concentrated near the equator in rapidly rotating stars. Unstable magnetic Rossby waves may lead to the local enhancement of magnetic flux at high latitudes of tachoclines in rapidly rotating stars. The enhanced magnetic flux may rise upwards due to the magnetic buoyancy in the form of tubes and appear as starspots at polar regions. Magnetic Rossby waves may also cause observed short term periodicity in the stellar magnetic activity. These results have important implications for the evolution of the stellar wind and exoplanets in young Sun-like stars.
Ballester Jose Luis
Carbonell M.
Khodachenko Maxim L.
Lammer Helmut
Leitzinger Martin
No associations
LandOfFree
Polar spots in rapidly rotating stars: stellar wind and evolution of exoplanets 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 Polar spots in rapidly rotating stars: stellar wind and evolution of exoplanets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polar spots in rapidly rotating stars: stellar wind and evolution of exoplanets will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1475519