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SUMMARY:The magnetic complexity of solar active regions: insight on the CM
 E-flare relationship in Solar Cycle 24
DTSTART;VALUE=DATE-TIME:20230510T075500Z
DTEND;VALUE=DATE-TIME:20230510T081000Z
DTSTAMP;VALUE=DATE-TIME:20240704T115654Z
UID:indico-contribution-326@meetings.aip.de
DESCRIPTION:Speakers: Luca Giovannelli (University of Rome Tor Vergata)\nS
 olar flares originate from active regions (ARs) hosting complex and strong
  bipolar magnetic fluxes. Forecasting the probability of an AR to flare an
 d defining reliable precursors of intense flares\, i.e.\, X- or M-class fl
 ares\, are extremely challenging tasks in the space weather field.\n\nIn t
 his work\, we focus on two metrics as flare precursors\, the unsigned flux
  R* and the novel topological parameter D\, representing the complexity of
  a solar active region. Both metrics are based on the automatic recognitio
 n of magnetic polarity inversion lines (PILs) in identified SDO/HMI ARs. W
 e use both a heuristic approach and a supervised machine-learning method t
 o validate the effectiveness of these metrics to predict the occurrence of
  X- or M-class flares in a given solar AR during the following 24 hr perio
 d. Moreover\, we revise the statistics of CME-flare relationship on Solar 
 Cycle 24 using the GOES database and a CME database recently released\, de
 veloped using the Drag-Based Model (DBM) to assess the quality of such a d
 atabase. In particular\, we exploit the R* and D parameters to classify fl
 aring regions in different classes\, studying the CME-flare relationship f
 or those classes over Solar Cycle 24.\n\nhttps://meetings.aip.de/event/24/
 contributions/326/
LOCATION:Haus H\, Telegrafenberg
URL:https://meetings.aip.de/event/24/contributions/326/
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