Institute Colloquium
31.08.2023
General information: The TLS Colloquium takes place every Tuesday between 2:00 p.m. and 3:00 p.m. during the academic semester.
Summer semester (SS): beginning of April to beginning of July
Winter semester (WS): Mid-October to early February
Invited lectures take place in the attic of the new building:
Thuringian State Observatory, Observatory 5, 07778 Tautenburg.
We intend to stream all talks via Zoom. Please contact us, if you are interested (colloquium@tls-tautenburg.de). The talks will be given in English.
Upcoming speakers for SS2025:
| date | speaker | talk titel | host |
| 08. April 2025 |
no colloquium |
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| 15. April 2025 |
Easter |
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| 22. April 2025 |
Easter |
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| 29. April 2025 |
Prof. Dr. Ernst Paunzen Masaryk University Brno, Czechia |
Is the upper main sequence a mess? | Markus Roth |
| 06. Mai 2025 |
Dr. Jan-Torge Schindler University of Hamburg |
The Rise of Supermassive Black Holes at Cosmic Dawn | Veronika Schaffenroth |
| 13. Mai 2025 |
Dr. Veronika Schaffenroth Thüringer Landessternwarte |
Understanding the influence of close companions on stellar evolution | internal |
| 20. Mai 2025 |
Prof. Dr. Markus Roth Thüringer Landessternwarte |
Do Black Holes exist? | internal |
| 26. Mai 2025 |
Dr. Priyanka Chaturvedi Tata Institute of Fundamental Research, Mumbai |
Diverse Exoplanets and Their Diverse Stellar Hosts | Artie Hatzes |
| 27. Mai 2025 |
Dr. Petra Odert University of Graz |
Signatures of stellar coronal mass ejections | Eike Guenther |
| 03. Juni 2025 |
Dr. Holly Preece Radboud University Nijmegen |
Veronika Schaffenroth | |
| 10. Juni 2025 |
Dr. Alexander Pietrow Astrophysical Institute Potsdam |
Sun-as-a-star flare observations with high-resolution telescopes | Michael Sigwarth |
| 17. Juni 2025 |
Dr. Duy Hoang Thüringer Landessternwarte |
internal | |
| 24. Juni 2025 |
Dr. Marilyn Latour University of Göttingen |
A stellar census in globular clusters with MUSE | Veronika Schaffenroth |
| 01. Juli 2025 |
Prof. Dr. Dominik Schwarz University of Bielefeld |
Aritra Basu, Matthias Hoeft | |
| 08. Juli 2025 |
Prof. Dr. Wolfgang Duschl University of Kiel |
CMB-driven Growth of (Super-)Massive Black Holes - A Work in Progress |
Markus Roth |
Previous speakers:
WS2024/2025:
| date | speaker | talk title | host |
| 15. October 2024 |
Dr. Emre Isik Max Planck Institut for Solar System Research Göttingen |
Exploring the magnetic activity of solar-type stars from the interior to the chromosphere | Markus Roth |
| 22. October 2024 | preparation for the "Long Night" | No colloquium | |
| 29. October 2024 |
Dr. Thomas Rimmele National Solar Observatory, Boulder Colorado - Director of DKIST |
The US National Science Foundation’s Daniel K. Inouye Solar Telescope: Operations commissioning – science results and lessons learned | Michael Sigwarth |
| 5. November 2024 |
Dr. Prateek Gupta Thuringian State Observatory |
Revolutionizing the grouping dynamics with MITRO halo finder | internal |
| 13. November 2024 |
Rok Hribar Jozef Stefan Institute, Slowenia |
Machine Learning and its Application to Exoplanetary Science | Artie Hatzes |
| 19. November 2024 |
Prof. Dr. Sebastian Wolf University of Kiel |
Polarimetry in planet formation studies |
Markus Roth |
| 26. November 2024 |
Prof. Dr. Timo Mappes University of Jena, Director of the Deutsches Optisches Museum |
Deutsches Optisches Museum (D.O.M.): Edutainment for Optics and Photonics | Jochen Eislöffel |
| 3. December 2024 |
Dr. Hans-Peter Doerr Thuringian State Observatory |
High-resolution with low-altitude Telescopes | internal |
| 10. December 2024 |
Dr. Theodosios Chatzistergos Max Planck Institut for Solar System Research Göttingen |
Exploiting historical archives for studies of solar activity and variability | Hemanth Pruthvi |
| 14. January 2025 |
Prof. Dr. Julia Tjus Ruhr University of Bochum |
Understanding non-thermal emission in the Galaxy with cosmic-ray propagation | Aritra Basu, Matthias Hoeft |
| 21. January 2025 |
Prof. Dr. Ralph Neuhäuser Astrophysical Institute, University of Jena |
Color evolution of Betelgeuse over two millennia through the Hertzsprung gap |
Markus Roth |
| 28. January 2025 |
Prof. Dr. Lena Noack Freie Universität Berlin |
Planets inside-out: Why the interior is relevant for surface conditions on rocky exoplanets | Eike Guenther |
| 4. February 2025 |
Prof. Dr. Norbert Przybilla University of Innsbruck |
Quantitative Spectroscopy of Massive Stars | Veronika Schaffenroth |
SS2024:
March 12, 2024 : Dr. Tiara Battich, Max Planck Institute for Astrophysics, Germany
A non-conventional origin for heavy elements: the intermediate neutron-capture process
April 09, 2024 : Prof. Dr. Manami Sasaki, Dr. Karl Remeis-Observatory Bamberg, Germany
The hot phase of the interstellar medium
April 16, 2024 : Dr. Malu S, Wayne State University, United States (online)
A broadband spectro-temporal view of neutron star low mass X-ray binaries
April 23, 2024 : Dr. Nadia Biava, Thüringer Landessternwarte Tautenburg, Germany
Investigating the origin of diffuse radio emission in cool-core galaxy clusters
April 30, 2024 : Prof. Dr. Christine Done, Durham University, UK (online)
Black hole accretion flows: from nearby stellar binaries to quasars at cosmic dawn
May 07, 2024 : Dr. Momo Ellwarth, Georg-August-Universität Göttingen, Germany
Investigating Convective Motions of the spatially resolved Quiet Sun
May 14, 2024 : Dr. Anya Samadi, Max Planck Institute for Solar System Research, Germany
Hybrid Pulsations in A-F-type Binary Systems
May 21, 2024 : Dr. Benard Nsamba, Kyambogo University (KyU), Uganda
Constraining stellar cores in the main-sequence mass transition zone: towards a calibration of core overshooting
May 28, 2024 : Dr. Charlotte Gehan, Max Planck Institute for Solar System Research, Germany
Magnetic activity of red giants: linking activity indicators, oscillations amplitude, and tidal interactions
June 04, 2024 : Prof. Dr. Daniel Bemmerer, Helmholtz-Zentrum Dresden-Rossendorf, Germany
Nuclear astrophysics underground
June 11, 2024 : Dr. Birgit Fuhrmeister, Universität Hamburg, Germany
Stellar extremes: Activity in M dwarfs as observed with CARMENES and extinction in TTauri stars
June 18, 2024 : Prof. Dr. Ravit Helled, Institute for Computational Science, University of Zurich, Switzerland (online)
What makes a planet “giant”?
June 25, 2024 : Dimitri Korsch, Thüringer Zentrum für Lernende Systeme und Robotik (TZLR), Germany
TZLR - Transfering AI Knowledge in Thuringia
July 02, 2024 : Dr. Christian Vocks, Leibniz Institute for Astrophysics Potsdam (AIP), Germany
Solar and Space Weather observations with the LOFAR radio telescope
WS2023/2024
October 10, 2023: Dr. Priyanka Jalan, Center for Theoretical Astrophysics, Warsaw, Poland (online)
Convolution neural network to characterize the Voigt profile of the Lyman-alpha forest absorbers
October 17, 2023: Dr. Torsten Ensslin, Max Planck Institute for Astrophysics, Garching, Germany
Astronomical imaging with information field theory
October 24, 2023: Dr. Paul Beck, Instituto Astrofisica de Canarias, LaLaguna, Spain (online)
Constraining stellar and orbital co-evolution from the oscillating red-giant binaries revealed by Gaia DR3
November 7, 2023: Dr. Surajit Paul, Manipal Centre for Natural Sciences (MCNS), MAHE, Manipal, India
Interesting diffuse radio emission features from low-mass galaxy cluster systems
November 14, 2023: Dr. Jingyi Mah, Max Planck Institute for Astronomy, Planet and Star Formation, Heidelberg, Germany (online)
Linking exoplanet diversity to their formation environment
November 21, 2023: Prof. Dibyendu Nandi, Center of Excellence in Space Sciences India (CESSI), Indian Institute of Science Education and Research Kolkata, India (online)
Stellar Magnetic Variability and exo(Planetary) Environments: Lessons from the Heliosphere
November 28, 2023: Dr. Ivan Milic, Leibniz Institute for Solar Physics, Freiburg, Germany
Interpreting high-resolution solar spectropolarimetric observations
December 5, 2023: Dr. Abhijit Bendre, École Polytechnique Fédérale de Lausanne, Switzerland (online)
Galactic Magnetic Fields: Insights from MHD Simulations
December 12, 2023: Dr. Agata Karska, Max Planck Institute for Radio Astronomy, Bonn, Germany
Outer Galaxy as a laboratory to study star formation across environments
January 16, 2024: Dr. Nadia Kostogryz, Max-Planck-Institut für Sonnensystemforschung, Göttingen, Germany (online)
Spectra and limb darkening of magnetized stars
January 23, 2024: Dr. Meredith Joyce, CSFK Konkoly Observatory in Budapest, Hungary (online)
Unlocking the Mysteries of Evolved Variable Stars with Seismic Stellar Evolution: From Dying Suns to Betelgeuse
January 30, 2024: Dr. Baha Dincel, Friedrich-Schiller-Universität, Jena, Germany
Searching for OB-runaway Stars inside Supernova Remnants
February 6, 2024: Dr. Patrick Gaulme, Thüringer Landessternwarte Tautenburg, Germany
Measuring atmospheric dynamics with the radial-velocity technique in the visible
February 13, 2024: Dr. Sydney A. Barnes, Leibniz-Institut für Astrophysik Potsdam, Germany
Gyrochronology - a route to the ages of cool field dwarf stars
SS2022/2023
02 May 2023: Prof. Nirupam Roy, Indian Institute of Science, Bengaluru, India
May 9, 2023: Dr. Michael Sigwarth, Thuringian State Observatory, Tautenburg, Germany
May 16, 2023: Prof. Heike Rauer, DLR Institute for Planetary Research, Berlin, Germany
May 23, 2023: Dr. Mara Salvato, Max Planck Institute for Extraterrestrial Physics, Garching, Germany
May 30, 2023: Dr. Sandra Jeffers, University of Göttingen, Germany
June 06, 2023: Dr. Martin Vollmann, University of Tübingen, Germany
June 13, 2023: Dr. Christian Rab, Ludwig Maximilians University, Munich, Germany
June 15, 2023: Dr. Wolfgang Schmidt, Leibniz Institute for Solar Physics, Freiburg, Germany
June 20, 2023: Prof. Gibor Basri, University of Berkeley, United States
June 27, 2023: Prof. Marco Bondi, IRA-INAF, Bologna, Italy
July 4, 2023: Prof. Artie Hatzes, Thuringian State Observatory, Tautenburg, Germany
WS2022/2023
September 8, 2022: Prof. Dr. Arnold Hanslmeier, Institute of Physics, Karl Franzens University Graz
October 18, 2022: Dr. Hemanth Pruthvi, Thuringian State Observatory
October 25, 2022: Dr. Rohit Sharma, University of Applied Sciences Northwestern Switzerland, Windisch
November 02, 2022: Dr. Miriam Rengel, Max Planck Institute for Solar System Research, Göttingen
November 8, 2022: Dr. Trifon Trifonov, Max Planck Institute for Astronomy, Heidelberg
15 November 2022: Prof. Tirthankar Roy Choudhury, NCRA-TIFR, Pune
November 22, 2022: Prof. Tim Shimwell, Leiden University/ASTRON
November 29, 2022: Dr. Rolf Schlichenmaier, Leibniz Institute for Solar Physics, Freiburg
December 06, 2022: Dr. Jesper Schou, Max Planck Institute for Solar System Research, Göttingen
December 13, 2022: Prof. Marco Regis, Turin University
January 10, 2023: Dr. Oscar Barragan, University of Oxford
January 17, 2023: Prof. Dr. Anvar Shukurov, Newcastle University, Newcastle upon Tyne
January 24, 2023: Dr. Matthias Hoeft, Thuringian State Observatory
January 31, 2023: Dr. Peter Kamphuis, Ruhr University Bochum
February 07, 2023: Dr. Bringfried Stecklum, Thuringian State Observatory