Name: 20. Kosmologietag
Start: 2026-05-06T12:30:00+02:00
End: 2026-05-08T13:40:00+02:00
Location: No location set

20. Kosmologietag

from Wednesday, May 6, 2026 (12:30 PM) to Friday, May 8, 2026 (1:40 PM)

Monday, May 4, 2026
Tuesday, May 5, 2026
Wednesday, May 6, 2026

12:30 PM Registration
Registration
12:30 PM - 1:30 PM

1:30 PM Welcome
Welcome
1:30 PM - 1:45 PM
1:45 PM Plenary
1:45 PM - 2:30 PM
Contributions

1:45 PM New Perspectives onto the Universe in the Era of Multi-Messenger Astrophysics - Samaya Nissanke
2:30 PM Session
2:30 PM - 3:00 PM
Contributions

2:30 PM Environmental Imprints of Supermassive Black Hole Binaries on the Nanohertz Gravitational-Wave Background - Matthias Daniel (Goethe-Universität Frankfurt)

2:45 PM Gravitational Waves from Black Hole Reheating: The High-Frequency Component - Nicholas Leister (Johannes Gutenberg Universität)
3:00 PM Coffee
Coffee
3:00 PM - 3:30 PM
3:30 PM Session
3:30 PM - 5:00 PM
Contributions

3:30 PM Cosmological constraints on TeV-scale dark matter subcomponents decaying after recombination - Markus Mosbech (RWTH Aachen)

3:45 PM Distinguishing Dark Matter Thermal Histories through Large Scale Structure - Yuan-Zhen Li (CP3, UCLouvain)

4:00 PM Constraints on neutrino mass and dark energy agnostic to the sound horizon - Ravi Sharma (RWTH Aachen Germany)

4:15 PM Constraining the inflaton potential with gravitational waves from oscillons - Jan Tränkle (ITP Universität Hannover)

4:30 PM Thermal effects on Dark Matter production during cosmic reheating - Mubarak A. S. Mohammed (UCLouvain-CP3)

4:45 PM Introducing Cosmolattice 2.0 - Franz Richard Sattler (University Bielefeld)
5:00 PM Coffee
Coffee
5:00 PM - 5:30 PM
5:30 PM Session
5:30 PM - 6:15 PM
Contributions

5:30 PM KiDS-Legacy: Constraints on Horndeski gravity from weak lensing combined with galaxy clustering and cosmic microwave background anisotropies - Benjamin Stölzner (Ruhr University Bochum)

5:45 PM Staying focused: In-flight monitoring of the Euclid space telescope - Dennis Neumann (Leiden Observatory)

6:00 PM Searching for ultralight ALPs with polarimetric observations of gravitational lenses - Shivani Deshmukh
6:15 PM Session: Flash Talks
Flash Talks
6:15 PM - 6:33 PM
Contributions

6:15 PM On the evolution of cosmic filaments in AbacusSummit - Wendy Wallace (University of Hamburg)

6:18 PM Modeling the baryonic content of galaxy clusters with interpretable machine learning - Subarna Chaki

6:21 PM Exploring the Delaying Effect of Ultralight Axions on the 21-cm Signal during Cosmic Dawn - Julian Kleff (Institute of Astrophysics and Geophysics, University of Göttingen, Germany)

6:24 PM Thermal axion production at strong-coupling - Eamonn Weitz

6:27 PM Cosmological Reconstruction with Fuzzy Dark Matter - Aoibhinn Gallagher (Universität Bielefeld)

6:30 PM Likelihood Emulation in Cosmology - Luca Janken
7:00 PM Reception
Reception
7:00 PM - 9:30 PM
Thursday, May 7, 2026
9:00 AM Session
9:00 AM - 10:30 AM
Contributions

9:00 AM Gaussian Lagrangian Galaxy Bias - Jens Stücker (University of Vienna)

9:15 AM Constraining Cosmology from Radio Surveys with Simulation-Based Inference - Vrund Patel (Institute for Theoretical Physics, Heidelberg University)

9:30 AM Simulation-based inference with the integrated 3PCF - David Gebauer (Universität Bielefeld)

9:45 AM Warm Inflation with the Standard Model - Marco Drewes (Université catholique de Louvain (UCLouvain))

10:00 AM NLO calculation of N_eff in the Standard Model - Adrian Finke (Uni Münster)

10:15 AM QCD corrections to the electroweak sphaleron rate - Philipp Klose (Nikhef)
10:30 AM Coffee
Coffee
10:30 AM - 11:00 AM
11:00 AM Session
11:00 AM - 12:30 PM
Contributions

11:00 AM BullFrog integrator for large-scale structure: quantum analogue and beyond ΛCDM - Cornelius Rampf (Ruđer Bošković Institute)

11:15 AM Stone-Skipping Orbits: Resonant Dynamics in ULDM Solitons - Yourong Frank Wang (University of Göttingen)

11:30 AM Core collapse beyond the fluid approximation: The late evolution of self-interacting dark matter halos - Simon May (Universität Bielefeld)

11:45 AM Bubble velocities in local equilibrium from a pseudopotential - Martin Münzberg

12:00 PM Slow-down effects on an expanding bubble in the early Universe - Nabeen Bhusal (DESY)

12:15 PM Scalar-Induced Gravitational Waves from a QCD-induced Tachyonic Phase Transition - Tamara Caldas (Goethe University Frankfurt)
1:45 PM Plenary
1:45 PM - 2:30 PM
Contributions

1:45 PM Einstein-Cartan gravity and its applications in particle physics and cosmology - Mikhail Shaposhnikov
2:30 PM Session
2:30 PM - 3:15 PM
Contributions

2:30 PM The equation of state of the Universe after a first-order phase transition - Henda Mansour (KIT - Institute of Theoretical Particle Physics (TTP))

2:45 PM Dark Sector Karaoke: A 3D EFT for a Pitch-Perfect Phase Transition. - Cristina Puchades Ibáñez (JGU)

3:00 PM Colour-Flavour Locked SIDM - Lorenzo De Ros (JGU Mainz)
3:15 PM Coffee
Coffee
3:15 PM - 3:45 PM
3:45 PM Session
3:45 PM - 4:45 PM
Contributions

3:45 PM 21cm cosmology at the cosmic dawn - Jonathan Pritchard (jpritchard@mpifr-bonn.mpg.de)

4:00 PM Probing Beyond-LCDM cosmologies with the 21cm signal - Maike Voelkel (Institute for Theoretical Physics Heidelberg)

4:15 PM Constraining Reionization Morphology and Source Properties with 21cm–Galaxy Cross-Correlation Surveys - Yannic Pietschke (Institute for Theoretical Physics, Heidelberg)

4:30 PM Capturing non-Gaussian cosmic information with Neutral Hydrogen one-point statistics - Bernhard Vos Ginés
4:45 PM Mini break
Mini break
4:45 PM - 5:00 PM
5:00 PM Session
5:00 PM - 6:00 PM
Contributions

5:00 PM Enhanced Axion Fluctuations in the Pre-Inflationary Scenario - Yeray Garcia del Castillo

5:15 PM Enhancing curvature with an axion - Diogo S. Gorgulho (University of Groningen)

5:30 PM Primordial Black Holes: Galaxy Genesis, Correlation Characteristics and Quantum Quiddity - Florian Kühnel

5:45 PM The cosmic equation of state & primordial black holes - Maël Gonin
6:30 PM Public lecture
Public lecture
6:30 PM - 7:30 PM

7:30 PM Conference dinner
Conference dinner
7:30 PM - 9:30 PM
Friday, May 8, 2026
9:00 AM Plenary
9:00 AM - 9:45 AM
Contributions

9:00 AM Constraining cosmology beyond the standard model with precision CMB experiments - Renée Hložek (University of Toronto)
9:45 AM Session
9:45 AM - 10:30 AM
Contributions

9:45 AM Machine-learning Assisted Reionization Simulations - Divesh Jain (University of Heidelberg)

10:00 AM Joint Astrophysical and Cosmological Constraints from Cross-Correlated 21 cm and Line-Intensity Maps - Klara Jons (Institute for Theoretical Physics Heidelberg)

10:15 AM Testing LCDM with LOFAR - Morteza Pashapour-Ahmadabadi (University Bielefeld)
10:30 AM Coffee
Coffee
10:30 AM - 11:00 AM
11:00 AM Session
11:00 AM - 12:15 PM
Contributions

11:00 AM Characterizing galactic foregrounds with SKAMPI: New S-band observations of the Large Magellanic Cloud - Nick Horstmann

11:15 AM Superhorizon Isocurvature as a Window into Dark Matter Production - Christopher Gerlach (Johannes Gutenberg-Universität Mainz)

11:30 AM Secluded Dark Sectors and Isocurvature Perturbations - Sabrina Saul (Johannes Gutenberg University Mainz)

11:45 AM Higgs vacuum stability and reheating in a kination-dominated Universe - Giorgio Laverda (JGU Mainz)

12:00 PM Physical effects of Gravitational Waves at second order: resolving gauge ambiguities - Guillem Domenech (Leibniz University Hannover)
12:15 PM Farewell - Cora Uhlemann (Bielefeld University)
Farewell
- Cora Uhlemann (Bielefeld University)
12:15 PM - 12:45 PM
Farewell and famous last words
Farewell and famous last words
12:15 PM - 12:45 PM

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