Comments on filament-disintegration and its relation to other aspects of solar activity

✍ Scribed by Helen W. Dodson; E. Ruth Hedeman; Marta Rovira Miceli

• Publisher: Springer
• Year: 1972
• Tongue: English
• Weight: 727 KB
• Volume: 23
• Category: Article
• ISSN: 0038-0938
• DOI: 10.1007/bf00148100

✦ Synopsis

Studies of'disparitions brusques' in solar cycles 19 and 20 (to 1969) indicate that such events occur frequently. Approximately 30% of all large filaments in these cycles disintegrated in the course of their transit across the solar disk. "Major' flares occurred with above average frequency on the last day on which 141 large disappearing filaments were observed (1958-60; 1966-69). Relationships between a disintegrating filament on July 10--11, 1959, a prior major flare, a newly formed spot, and concomitant growth of H x plage are presented. Observation of prior descending prominence material apparently dirccted towards thc location of the flarc of 1959 July 15':t19h23 "~ is reported. The development of the filament-associated flare of February 13, 1967 is described. * Visiting Astronomer, McMath-Hulbert Observatory.