Splinter Meeting HiRes

High-Resolution Solar Imaging, Spectroscopy, and Polarimetry - Recent Developments in Science and Instrumentation

Time: Wednesday September 20, 14:00-16:30 and 17:00-19:00

Room: Auditorium MPS

Convenors: Andreas Lagg1, Nazaret Bello Gonzalez2, Meetu Verma3, Rolf Schlichenmaier2, Horst Balthasar3

1 Max-Planck-Institute für Sonnensystemforschung, Göttingen
2 Kiepenheuer-Institut für Sonnenphysik, Freiburg
3 Leibniz-Institut für Astrophysik Potsdam (AIP)

Many fundamental physical processes on the Sun can be traced back to mechanisms occurring on the smallest spatial scales. Prominent examples are the conversion of kinetic energy contained in the plasma motions by the excitation and dissipation of magneto-acoustic waves, the shuffling of the magnetic field with the subsequent re-organization by micro-flare activity, or the convective motions in quiet-Sun granules, penumbral laments and umbral dots. The understanding of these processes requires studies at highest spatial and temporal resolution. At the same time, the weak magnetic field in, e.g., quiet-Sun regions, or the details of the height stratification of the magnetic field vector requires measurements at highest polarimetric signal to noise ratio.

The availability of large solar telescopes, like the German GREGOR telescope on Tenerife, the Swedish Solar Telescope on La Palma, or the balloon-borne observatory Sunrise, are currently boosting the scientific discoveries in small-scale processes occurring in the solar photosphere and the chromosphere. The development of sophisticated, new instrumentation combined with powerful adaptive optics systems and image reconstruction techniques allows for studies of these processes with unprecedented accuracy.

In this splinter session we want to discuss recent advances in this field of solar observations. We invite the participants to submit contributions presenting results of high-resolution observations, their theoretical background using, for example, magneto-hydrodynamical modeling, and also the development of new instrumentation and data analysis techniques. The session should strengthen the connection between scientists and instrument developers for a fruitful collaboration in future international solar physics projects like the European Solar Telescope.


14:00  Iker Requerey:
Magnetic vortex flow at a supergranular vertex

14:15  Adalbert Ding:
Doppler Spectroscopy of the Solar Corona: Detection of Cool Prominence Material Embedded in a Hot Fe XIV Plasma Environment within a Fast Moving CME-Front

14:30  Andrea Diercke:
Multi-wavelength observations of an arch filament system

14:45  Anjali Kaithakkal:
Small-scale Flux Cancellations Observed with Sunrise II/IMaX

15:00  Ricardo Gafeira:
Small scale chromospheric fibrils observed by SUNRISE 2

15:15  Meetu Verma:
High-resolution imaging and near-infrared spectroscopy of penumbral decay

15:30  Narayanamurthy Smitha:
Probing the photospheric magnetic field with new spectral line pairs

15:45  Fatima Kahil:
Brightness of solar magnetic elements as a function of magnetic flux at high spatial resolution

16:00  Ivan Milic:
Spectropolarimetric inversions using spectral lines formed in non-local thermodynamic equilibrium

16:15  Michiel van Noort:
Image restoration of solar slit spectra

16:30-17:00 Coffee Break & Poster Session (Foyer Physics)

17:00  Tino Riethmüller:
The potential of many-line inversions of photospheric spectropolarimetric data in the visible and near UV

17:15  Nazaret Bello González:
The new understanding of penumbral formation

17:30  Sebastian Hoch:
Dynamic fine-structure in magnetic processes in the solar photosphere

17:45  Rolf Schlichenmaier:
The Jur\v{c}\'ak criterion: Magnetic property of boundaries in pores, proto-spots, and umbrae

18:00  Franziska Zeuner:
Fast dual-beam spectropolarimetry - first results on scattering polarization measurements with FSP II at the DST

18:15  Nazaret Bello González:
VTF: a visible tunable filter for the DKIST

18:30  Kinga Albert:
Autonomous data reduction for the space-borne spectropolarimeter PHI

18:45  Carsten Denker:
High-resolution Fast Imager (HiFI): Image Quality and Image Restoration

Related contributions

PresentationTitleType PDF
ChanumoluModel Based Calibrations of Microlensed Hyperspectral ImagerPoster PDF
DingPAMIS: A Partially Multiplexed High Resolution Imaging SpectrometerPoster PDF
FerretNew results on supergranulationPoster PDF
Garcia-RivasUmbral sunspot spectra observed with LARS compared to cool starsPoster PDF
KrishnamurthyScattering theory of Paschen-Back effect: application to Li I 6708 A doubletPoster PDF
NagashimaComparison between time-distance and ring-diagram helioseismology measurements of subsurface convective flowsPoster PDF
PoulierMultiple scattering of acoustic wavesPoster PDF
PrzybylskiDissipation of Alfv\'en waves through ion-neutral interactionsPoster PDF
SchouSupergranular Waves RevisitedPoster PDF
YadavDynamics of vortex flows in the lower solar atmospherePoster PDF