Fine Structure in Sunspots: Sizes, Lifetimes, Motions and Temporal Variations
Abstract
The analysis of a 4 1/2 hour series of high resolution white light observations of the umbra in a sunspot NOAA 7519 is described. An object-tracking procedure was applied to the destretched movie of 360 frames. In total, 662 umbral dots were tracked and their intensity variations, effective diameters, lifetimes, and proper motions were measured.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 31, 1997
- Accession Number
- ADA334909
Entities
People
- G. W. Simon
- M. Sobotka
- P. N. Brandt
Organizations
- Phillips Laboratory