Extreme solar storms based on solar magnetic field

Abstract

Many questions have to be answered before understanding the relationship between the emerging magnetic flux through the solar surface and the extreme geoeffective events. Which threshold determines the onset of the eruption? What is the upper limit in energy for a flare? Is the size of sunspot the only criteria to get extreme solar events? Based on observations of previous solar cycles, and theory, the main ingredients for getting X ray class flares and large Interplanetary Corona Mass Ejections e.g. the built up of the electric current in the corona, are presented such as the existence of magnetic free energy, magnetic helicity, twist and stress in active regions. The upper limit of solar flare energy in space research era and the possible chances to get super-flares and extreme solar events can be predicted using MHD simulation of coronal mass ejections

arXiv comment21 pages,4 Figures, Varsiti Conference in Varna June 2016

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Cited by in corpus (8)

• Extreme solar events
• Do Kepler superflare stars really include slowly-rotating Sun-like stars ? - Results using APO 3.5m telescope spectroscopic observations and Gaia-DR2 data -
• Statistical Properties of Superflares on Solar-type Stars: Results Using All of the Kepler Primary Mission Data
• Drifting of the line-tied footpoints of CME flux-ropes
• Statistical Analysis of Solar Events Associated with Storm Sudden Commencements over One Year of Solar Maximum during Cycle 23: Propagation from the Sun to the Earth and Effects
• The New 2018 Version of the Meudon Spectroheliograph
• Low geo-effectiveness of fast halo CMEs related to the 12 X-class flares in 2002
• Reminiscences