Lifetime of Solar Granules.
Abstract
A time sequence of high-definition photographs of the solar granulation was obtained on the Stratoscope flight of August 17,1959 The correlation function in time for the photospheric intensity variations has been determined from these photographs. The correlation function was found to be well represented by a simple exponential decay with a time constant of 6 27 minutes. If the average lifetime of granules is defined as twice the time interval in which the correlation drops to hall, then this lifetime is found to be 8.6 minutes.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- September 1961
- DOI:
- 10.1086/147160
- Bibcode:
- 1961ApJ...134..312B