Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2010-10-04
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
4 pages, Proceedings of IAU Symposium 273 "Physics of Sun and Starspots" Eds. D.P. Choudhary and K.G. Strassmeier
Scientific paper
We study the evolution of magnetic shear angle in a flare productive active region NOAA 10930. The magnetic shear angle is defined as the deviation in the orientation of the observed magnetic field vector with respect to the potential field vector. The shear angle is measured in horizontal as well as vertical plane. The former is computed by taking the difference between the azimuth angles of the observed and potential field and is called the twist-shear, while the latter is computed by taking the difference between the inclination angles of the observed and potential field and is called the dip-shear. The evolution of the two shear angles is then tracked over a small region located over the sheared penumbra of the delta sunspot in NOAA 10930. We find that, while the twist-shear shows an increasing trend after the flare the dip-shear shows a significant drop after the flare.
Gosain Sanjay
Venkatakrishnan Parameshwaran
No associations
LandOfFree
Evolution of twist-shear and dip-shear in Faring active region NOAA 10930 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 Evolution of twist-shear and dip-shear in Faring active region NOAA 10930, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Evolution of twist-shear and dip-shear in Faring active region NOAA 10930 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-274251