Astronomy and Astrophysics – Astrophysics – Solar and Stellar Astrophysics
Scientific paper
2009-05-19
Astronomy and Astrophysics
Astrophysics
Solar and Stellar Astrophysics
7 Pages, 6 Figures, conference proceeding SOHO-GONG 2008
Scientific paper
Measuring the depth variation of the meridional flows is important for understanding the solar cycle, at least according to a number of dynamo models. While attempting to extend the early observations of \citet{giles_thesis} of time-distance measurements of flow, we have stumbled upon some systematic errors that can affect these measurements: 1) the additional distance traveled by radiation coming from points away from disk center causes an apparent `shrinking' Sun, that is an apparent flow towards the disk center and 2) in measurements away from the central longitude, the rotation signal can leak into meridional flow signals. Attempts to understand and overcome these systematic problems will be presented. Forward models based on ray theory have been applied in order to test the sensitivity of travel times to various models.
Jr.
Duvall Thomas L.
Hanasoge Shravan M.
No associations
LandOfFree
Measuring Meridional Circulation in the Sun 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 Measuring Meridional Circulation in the Sun, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Measuring Meridional Circulation in the Sun will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-700150