A small subflare in CINOF program, 1972 June 14, 1936 UT
Abstract
According to H-alpha and/or K3 records of McMath Plage 11926, the flare event on 1972 June 14 at 1936 UT was one of a series of four subflares that occurred in this plage between 1600 and 2030 UT. These chromospheric brightenings apparently were associated with a moderately active system of narrow filaments just beyond the southern boundary of the calcium plage. Comparison with magnetographic data shows that in general these subflares occurred in the neighborhood of a secondary neutral line near the southern boundary of the plage. The brightest H-alpha component of the 1936 UT event, however, developed over the penumbra of the large following spot of Mt. Wilson group 18859, near the eastern end of the filament system, and cut nearly perpendicularly across the closely packed cluster of magnetic contours surrounding the spot.
- Publication:
-
Solar-Terrestrial Physics, Volume 1
- Pub Date:
- 1974
- Bibcode:
- 1974stp.....1...63D
- Keywords:
-
- Chromosphere;
- H Alpha Line;
- Solar Flares;
- Solar Observatories;
- Radio Astronomy;
- Solar Radio Emission;
- Solar Spectra;
- Solar X-Rays;
- Solar Physics