Conveners
1.4 Solar activity and eruptions in the long-term prospective (chair Timo Asikainen)
- Allan-Sacha Brun (CEA Paris-Saclay, France)
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Mykola Gordovskyy (U. of Hertfordshire, UK)10/06/2026, 11:00Review
High energy ions and electrons play a crucial role in the fast energy transport in solar flares. A fraction of the particles accelerated in flares precipitate in the solar atmosphere, heating the corona and chromosphere, and producing non-thermal gamma-, X-ray and radio emissions. Others escape from the corona into the heliosphere. The escaping energetic particles are an important component of...
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José Manuel Vaquero (Universidad de Extremadura, ES)10/06/2026, 11:20
Recovering historical solar and geomagnetic observations is essential for extending the temporal baseline of Space Climate research. A significant amount of valuable material remains scattered across solitary archives or published in sources that are largely inaccessible to the research community. In this contribution, we present recent progress in identifying, analyzing, and contextualizing...
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Nariaki Nitta (Lockheed Martin Solar and Astrophysics Laboratory, US)10/06/2026, 11:32
We present a preliminary analysis of two recent periods of quasi-extreme space weather driven by strong interplanetary (IP) shocks. In November 2025, four fast CMEs occurred within five days, each associated with an X-class flare. Although the third event had the highest soft X- ray peak flux and CME speed, giving rise to a ground level enhancement (GLE) event, it was the shock wave from the...
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Dmitrijs Bezrukovs (VIRAC, LV)10/06/2026, 11:44
Known that spectral observations of microwave (1-10 cm) polarized emission of the Sun offer the possibility for direct measurements of plasma parameters and magnetic field inductions in the upper chromosphere and the lower corona at the range of heights above the photosphere. Thus current microwave observations of the Sun could be expected for studies of wide range of solar physics problems...
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