The cancellation of magnetic flux. I - On the quiet sun
Abstract
Digital and photographic magnetograms recorded at 2.5 min intervals on July 9, 1984 are used to study the disappearance of magnetic flux in an area of the quiet sun; attention is given to 16 examples of flux disappearance and three ephemeral regions meeting minimum flux and change percentage criteria. Flux disappearance is noted to have occurred only in closely spaced features of opposite polarity, and is accordingly designated 'cancellation'. The cancellation phenomenon occurred in combinations of network features, intranetwork features, and ephemeral regions. It is concluded that cancellation is the dominant mechanism through which magnetic flux is observed to disappear on the quiet sun.
- Publication:
-
Australian Journal of Physics
- Pub Date:
- 1985
- DOI:
- 10.1071/PH850855
- Bibcode:
- 1985AuJPh..38..855L
- Keywords:
-
- Solar Activity;
- Solar Magnetic Field;
- Astronomical Maps;
- Astronomical Photography;
- Cancellation;
- Computerized Simulation;
- Ephemerides;
- Magnetic Flux;
- Magnetic Poles;
- Magnetic Signatures;
- Solar Physics