Intergranular plumes and formation of network bright points.
Abstract
We discuss the temporal evolution of the photospheric intergranular lanes using a 1 hour time sequence of white-light images of solar granulation. The time series was obtained with the 50 cm refractor at the turret dome of the Pic du Midi Observatory. Analysis reveals the existence of singularities in the intergranular lanes that we call ``intergranular holes''. Intergranular holes, which have diameters between 0.24arcsec and 0.45arcsec, are continuously visible for more than 45 minutes. The holes appear to be systematically distributed at the periphery of mesogranular and supergranular cells. Our study reveals the formation of bright points (BPs) in 4 out of 14 cases studied very close to the intergranular holes, suggesting that intergranular holes may be the locations where magnetic flux tubes are formed.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- April 1997
- Bibcode:
- 1997A&A...320..605R
- Keywords:
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- SUN: GRANULATION;
- PHOTOSPHERE;
- METHODS: DATA ANALYSIS;
- CONVECTION