| Autor: |
Ulrich, Roger K., Boyden, John E., Webster, Larry, Snodgrass, Herschel B., Padilla, Steven P., Gilman, Pamela, Shieber, Tom |
| Zdroj: |
Solar Physics; September 1988, Vol. 117 Issue: 2 p291-328, 38p |
| Abstrakt: |
This paper describes a thorough reevaluation of the procedures for reducing the data acquired at the Mt. Wilson Observatory synoptic program of solar observations at the 150-foot tower. We also describe a new program of acquiring as many scans per day as possible of the solar magnetic and velocity fields. We give a new fitting formula which removes the background velocity field from each scan. An important new feature of our reduction algorithm is our treatment of the limb shift which permits time variation in this function. We identify the difference between the limb shift along the north-south axis and the east-west axis as potentially being a result of meridional circulation. Our analysis interprets the time variation in the east-west limb shift as being the result of changes in a vertical component of the meridional circulation. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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