The most recent solar observations are achieving a combination of spatial, spectral, and temporal resolutions that provide unprecedented insights into the small-scale processes occurring in the solar photosphere, chromosphere, and corona. These advances enable solar physicists to study and understand the complex interplay between plasma, radiation, and magnetic fields on ever smaller scales. While our abilities to probe the fine-scale dynamics of the (inner) atmospheric layers of the Sun continue to improve, the broader impacts of the intricate processes we are unveiling are not always clear. Understanding the wider importance of how these localised phenomena impact the solar–terrestrial relationship, the influence of such behaviour on other Sun-like stars, or how they can affect the dynamics of magnetospheres requires progress in the coordination and interchange across observational, instrumental, and theoretical domains. 

The goal of this symposium is to bring together solar physicists studying fine-scale phenomena with experts in space weather and stellar activity, fostering an exchange that connects solar research to broader astrophysical contexts. This symposium is a coordinated effort and provides a platform for comparing techniques, discussing challenges, and highlighting recent breakthroughs.

Programme

The program is structured into six thematic blocks:

1. Importance of understanding the small-scale structure of the solar atmosphere
2. Frontiers in ground-based high-resolution spectropolarimetry
3. Frontiers in space, balloon, and rocket-based solar magnetometry
4. Magnetic fields shaping solar activity and the heliosphere
5. Our resolved star and its activity in the context of (exo)space weather, stellar activity & exoplanets
6. From telescopes to discovery: next steps and emerging trends in solar and stellar physics

The symposium aims to strengthen collaboration across instrumental, observational, and theoretical efforts to capture the complexity of the solar magnetic field and its impact on our understanding of the Sun and other stars.

Invited speakers

To be confirmed

Scientific organisers

• Franziska Zeuner (IRSOL)
• Ivan Millic (KIS; Co-chair)
• Marian Martinez Gonzalez (IAC; Co-chair)
• Sebastián Castellanos Durán (MPS; Chair)
• Hanna Strecker (IAA-CSIC)
• Carlos José Díaz Baso (UiO)

Contact

Sebastián Castellanos Durán (castellanos @ mps.mpg.de)