Bibcode
González Hernández, I.; Patron, J.; Bogart, R. S.; SOI Ring Diagrams,
Referencia bibliográfica
Structure and Dynamics of the Interior of the Sun and Sun-like Stars SOHO 6/GONG 98 Workshop Abstract, June 1-4, 1998, Boston, Massachusetts, p. 587
Fecha de publicación:
0
1998
Número de citas
3
Número de citas referidas
3
Descripción
A view of the horizontal velocity flows in the upper layers of the
convection zone is presented. In order to produce the synoptic map, 120
sections of about 15 degrees square have been studied using a ring
diagram analysis. The area analyzed extends 75 degrees in latitude and
360 degrees in longitude. The sections were individually tracked over
periods of plus or minus 768 minutes from their central meridian
crossings. The data used are SOI/MDI full-disc Dopplergrams taken during
its first Dynamics Program in May and June of 1996. The images have a
pixel size of 2 arcsec which allows coverage of a range in l up to 1200.
The results show a coherent pattern in the velocity fields compatible
with meridional circulation from the equator to the poles of order 30-50
m/s at depths of 0.985 r/Rodot. Rotational curves versus
depth for latitudes 0-circ, 15-circ and 30-circ are also shown.