Physics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002esasp.506.1045t&link_type=abstract
In: Solar variability: from core to outer frontiers. The 10th European Solar Physics Meeting, 9 - 14 September 2002, Prague, Cze
Physics
2
Sunspot-Groups, Flares, Space Weather
Scientific paper
Very energetic flares and Coronal Mass Ejections may have important consequences on Space Weather and Earth magnetosphere. In the last years, thanks to theoretical modelling, ground based and satellite observations, the comprehension of flares and CME has greatly improved. Nevertheless, it is not yet possible to surely forecast whether and when an active region may give rise to these events. In this context, we have focussed our attention on the possibility to identify the most favourable conditions an active region must develop in order to be flare-productive. We have therefore used data on sunspot-groups (INAF-Catania Astrophysical Observatory and NOAA reports) during the period January 1998 - April 2002, and data on very energetic flares (M and X) obtained in the soft X-ray range by GOES 8, in order to define the characteristics of several parameters which may indicate whether an active region is going to produce a flare.
Contarino Lidia
Romano Pado
Ternullo Maurizio
Zuccarello Francesca
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