Name: 18. Kosmologietag
Start: 2024-05-02T12:25:00+02:00
End: 2024-05-03T22:30:00+02:00
Location: ZiF | Bielefeld University

18. Kosmologietag

from Thursday, May 2, 2024 (12:25 PM) to Friday, May 3, 2024 (10:30 PM)

Monday, April 29, 2024
Tuesday, April 30, 2024
Wednesday, May 1, 2024
Thursday, May 2, 2024

1:00 PM Coffee
Coffee
1:00 PM - 1:30 PM

1:30 PM Registration
Registration
1:30 PM - 2:00 PM
2:00 PM eROSITA's X-Ray Eyes Focussed on the Dark Side of the Universe - Thomas Reiprich (Universität Bonn)
eROSITA's X-Ray Eyes Focussed on the Dark Side of the Universe
- Thomas Reiprich (Universität Bonn)
2:00 PM - 3:00 PM
Massive galaxy clusters are the youngest and, therefore, most massive objects in the Universe. Their dark matter-dominated gravitational potential wells are filled with gas, heated to 10s of millions of Kelvin by shocks and compression. The SRG/eROSITA X-ray space telescope recently surveyed the sky, hunting for this hot gas in clusters, detecting an unprecedentedly large number. Employing weak gravitational lensing to constrain cluster masses, tight constraints on, e.g., dark energy and the sum of neutrino masses have been obtained. Furthermore, eROSITA has started detecting the missing normal matter (“baryons”), hiding in the so-called warm-hot intergalactic medium (WHIM) in filaments around nearby galaxy clusters. In this talk, I’ll provide an overview of galaxy clusters, eROSITA and its measurements, and the resulting constraints on dark baryons, dark matter, and dark energy.
3:00 PM One-slide presentations
One-slide presentations
3:00 PM - 3:20 PM
Contributions

3:00 PM Is the Universe made entirely of baryons? - Mark Walker (Manly Astrophysics)

3:05 PM Simplifying GR - Geometric precession with Geometric Algebra - Pablo Banon Perez (Heidelberg University)

3:10 PM Matter-antimatter asymmetry and dark matter stability from baryon number conservation - Jérôme Vandecasteele (TUM)

3:15 PM Exploring Minimally Modified Gravity Models - Alexander Ganz (ITP Hannover)
3:20 PM Coffee
Coffee
3:20 PM - 3:50 PM
3:50 PM Talks 1 - 5
Talks 1 - 5
3:50 PM - 5:05 PM
Contributions

3:50 PM Minimal decaying dark matter: from cosmological tensions to neutrino signatures - Lea Fuß (Technical University Munich)

4:05 PM Probing modified Hawking evaporation with gravitational waves from the primordial black hole dominated Universe - Jan Tränkle (ITP Universität Hannover)

4:20 PM Properties and Signatures of ALP Stars in the Milky Way - Dennis Maseizik (II. Institut für theoretische Physik, Uni Hamburg)

4:35 PM QED contribution to Neff at NLO - Yannis Georis (Université catholique de Louvain (UCLouvain))

4:50 PM ApPolLo - Apertif counterparts of polarised LOFAR sources - Anna Berger (Universität Bielefeld)
5:05 PM Coffee
Coffee
5:05 PM - 5:35 PM
5:35 PM Talks 6 - 9
Talks 6 - 9
5:35 PM - 6:35 PM
Contributions

5:35 PM Universality of structures from the small-scale limit of the dark matter power spectrum - Sara Konrad (Institute for Theoretical Physics, Heidelberg University)

5:50 PM Journey into Anisotropy - Robbert Scholtens (University of Groningen)

6:05 PM Leptogenesis via bubble collisions - Martina Cataldi (Hamburg University)

6:20 PM Probing dark matter microphysics with structure formation - Markus Mosbech (RWTH Aachen)
7:30 PM Dinner: Brauhaus Joh. Albrecht
Dinner: Brauhaus Joh. Albrecht
7:30 PM - 9:30 PM
Friday, May 3, 2024
9:00 AM Talks 10 - 14
Talks 10 - 14
9:00 AM - 10:00 AM
Contributions

9:00 AM Quantum simulation of the dynamics in the early universe - Stefan Floerchinger (Theoretisch-Physikalisches Institut, Friedrich-Schiller Universität Jena)

9:15 AM Parity-odd power spectra: Concise Statistics for Cosmological Parity Violation - Drew Jamieson (Max-Planck Institute for Astrophysics)

9:30 AM Spectral distortions and PBH constraints in presence of primordial non-Gaussianity - Devanshu Sharma (RWTH Aachen University)

9:45 AM Gravitational Waves from Low-Scale Cosmic Strings - Tobias Schröder (Institute for Theoretical Physics, University of Münster)
10:00 AM One-slide presentations
One-slide presentations
10:00 AM - 10:15 AM
Contributions

10:00 AM OLÉ - Active Sampling and Differentiable Emulation for Cosmology - Sven Günther (RWTH Aachen University - Institute for Theoretical Particle Physics and Cosmology)

10:02 AM Small-Scale Asymptotics of the Free Density Perturbation Bispectrum - Ricardo Waibel (Institute for Theoretical Physics, Heidelberg University)

10:04 AM Peering Behind the Screening Mechanisms of Horndeski Theories - Ashim Sen Gupta
10:15 AM Coffee
Coffee
10:15 AM - 10:45 AM
10:45 AM Talks 15 - 18
Talks 15 - 18
10:45 AM - 11:45 AM
Contributions

10:45 AM The Integrated 3-point correlation function of projected cosmic density fields - Anik Halder (Max Planck Institute for Extraterrestrial Physics)

11:00 AM On a thermal Higgs width across an electroweak phase transition - Magdalena Eriksson (University of Bern)

11:15 AM Cosmology with LOFAR Sky Surveys - Lukas Böhme (Universität Bielefeld)

11:30 AM From Tunneling to Friction and Back - Enrico Perboni (DESY)
11:45 AM Coffee
Coffee
11:45 AM - 12:15 PM
12:15 PM Pushing the Limits of Dark Matter -- New Approaches and Advanced Methods - Julia Harz (Universität Mainz)
Pushing the Limits of Dark Matter -- New Approaches and Advanced Methods
- Julia Harz (Universität Mainz)
12:15 PM - 1:15 PM
1:15 PM Ending
Ending
1:15 PM - 1:30 PM

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