Meridional Flows from Ring Diagram Analysis

Bibcode
1999ApJ...510L.153G
DOI
10.1086/311811
González Hernández, J. I.; Patrón, J.; Bogart, R. S.; SOI Ring Diagram Team
Bibliographical reference

The Astrophysical Journal, Volume 510, Issue 2, pp. L153-L156.

Advertised on:
1
1999
Journal
The Astrophysical Journal
Number of authors
4
IAC number of authors
2
Citations
47
Refereed citations
33
Description
In order to search for meridional circulation in the solar envelope, we have applied ring diagram analysis to a set of small regions over the surface. The helioseismic data consist of Solar Oscillation Investigation/Michelson Doppler Imager Dopplergrams taken over a time span of about 50 hr (~3000 images) on 1998 June 20-22. The regions studied cover 115 deg in latitude centered on the equator and 30 deg in longitude. We find poleward flows between r/ R_solar=0.97 and the surface. There is no evidence in this depth range for the return path of these meridional flows. The temporal stability of these flows will be discussed after the analysis of a synoptic map obtained using the same technique.
Type
Refereed

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