CAOSP abstracts, Volume: 25, year: 1995

Abstract: The Catalogue of LDE-type flares covers 25 years of LDE-type flare data (1969-1994). The continuation of the list of long-lasting SXR flares (LDE-type) is given in Table 1. The latter contains the list of LDE flares observed from July 1993 to June 1994, and ties in timewise with the previous paper (Antalova 1990); it is only available in a computer-file form. One considers temporal variations of the occurrence of the LDE flares, with SXR duration exceeding 2 hours, throughout the 22-nd cycle. Current studies of the heliosphere regard Coronal Mass Ejections (CMEs) as a principal phenomenon modifying its properties. CMEs are usually accompanied by dynamic activity phenomena (LDE-type flares, DBs and eruptive prominences). That is the reason why CMEs are implicitly incorporated in LDE-type flare list. Analysis of the LDE-type flare occurrence in solar cycles 20, 21 and 22 is published in the following papers: - Periodicities of the LDE-type flare occurrence (1969-1992) in Antalova (1994). - Cosmic-ray modulation and long-duration solar flare events, in Kudela et al. (1994). - On the correlation between daily GCR intensity values and LDE-type flare index (1987, 1988, 1990 and 1992) in Antalova et al. (1995). The temporal changes found in a daily CNI-FI anticorrelation profile reflect the cyclic magnetic reversal of the Sun as well as the corresponding heliospherical topology. - E-W distribution of Solar LDE-type Flares and Galactic Cosmic ray modulation (1969-1972) in Antalova et al. (1994) and Jakimiec et al. (1995). - Role of LDE-type flares in the GCR Modulation (1969-1972) in Antalova et al. (1995) - The magnetic reversal in the 21st solar cycle and LDE-type flares in Antalova (1996).

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