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1st Open Sunrise III Science Meeting: Data Release and Science Projects

1–3 Jun 2026
KIS, Freiburg
Europe/Berlin timezone

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Session

Day 2: Session 4

3 Jun 2026, 16:00
KIS, Freiburg

KIS, Freiburg

Georges-Köhler-Allee 401a 79110 Freiburg Germany

Conveners

Day 2: Session 4

  • Dusan Vukadinovic (Institute of Physics, University of Graz)

Presentation materials

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  1. 18. Unveiling spectral and radial velocity signatures of solar faculae using 3D MHD simulations
    Florian Kröll (GNOI)
    03/06/2026, 16:00
    Science Meeting

    Faculae are a major source of spectral and radial velocity (RV) variability in the Sun and in Sun-like stars, yet their disk-integrated spectroscopic imprint remains insufficiently constrained. We investigate how faculae modify spectral line morphology and line-of-sight velocity signatures from disk centre to the limb using a physically consistent forward model based on 3D radiative...

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  2. 30. Simulated center-to-limb variation of convective velocity shifts and their modification by faculae
    Dr Sowmya Krishnamurthy (University of Graz)
    03/06/2026, 16:15
    Science Meeting

    Convective velocity fields in the solar photosphere are strongly modified by magnetic structures such as faculae, leading to measurable changes in spectral line shapes and shifts. These effects become increasingly complex away from the disk center. Accurately capturing this center-to-limb variation is essential for interpreting spatially resolved solar observations and for modeling unresolved...

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  3. 37. Interaction of magnetic fields with horizontal vortex flows at the periphery of granules.
    Vigeesh Gangadharan (Institut für Sonnenphysik (KIS))
    03/06/2026, 16:30
    Science Meeting

    Plasma flows in the near-surface region are thought to play an important role in replenishing the quiet Sun magnetic field. The interaction of magnetic fields with the complex flow structure causes these fields to reorganize at sub-granular scales. Horizontally aligned vortex flows near the edge of solar granules can grab magnetic fields from the interior and bring them to the visible surface....

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  4. 39. Chromospheric Heating in Solar Plage Region
    Sandeep Dubey (Udaipur Solar Observatory, PRL, India)
    03/06/2026, 16:45
    Science Meeting

    The solar chromosphere is one of the most intriguing yet poorly understood regions of the solar atmosphere, and its heating remains a central problem in solar physics. Plage regions, characterized by the strong, predominantly vertical magnetic fields, show enhanced chromospheric emission, indicating localized energy deposition. The dominant
    mechanisms that heat the chromosphere include waves,...

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  5. 48. Concluding Remarks
    Sami Solanki (MPS)
    03/06/2026, 17:00
    Science Meeting
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