Munich Large-Scale Structure Days

20 Oct 2025, 08:00 → 21 Oct 2025, 22:00 Europe/Berlin

Large seminar room 1.1.18b (MPE, Munich)

Henrique Rubira (TUM), Mathias Garny (TUM), Nils Schöneberg (LMU Munich), Noemi Anau Montel (MPA), Sebastian Bocquet (LMU Munich), Steffen Hagstotz (LMU), Toshiki Kurita

The purpose of the Large Scale Structure Days is to bring together all the people in southern Germany and beyond who are interested in the LSS of the Universe with the aim of fostering fruitful exchanges and collaborations among them. The big question for this year will be the transition from stage 3 to stage 4 surveys. Where do we stand with and what did we learn from stage 3 surveys, and where are we going with and what are the challenges for stage 4 surveys?

Some topics that will be discussed include:

• Galaxy clustering
• Beyond 2-point statistics
• Cluster physics
• Gravitational lensing
• Non-standard cosmological models
• Numerical Simulations

This event will take place at MPE and will be a two full-days in person meeting on Oct 20+21. The schedule is now set up and you can check it out in the timetable tab on the left. The list of confirmed speakers include:

• Jose Bernal (Cantabria)
• Adriaan Duivenvoorden (MPA)
• Daniel Gruen (LMU)
• Hendrik Hildebrandt (Bochum)
• Azadeh Moradinezhad (Annecy)
• Barbara Sartoris (LMU)
• Nils Schöneberg (LMU)
• Volker Springel (MPA)

We are looking forward to meeting you there!

Access information to MPE:

https://www.mpe.mpg.de/3539/visitors

MPE large seminar room 1.1.18b 

 

 

Monday 20 October

Intro

1 Intro

LSS days.pdf

Galaxy clustering: Simulations & Baryonic Feedback

Convener: Henrique Rubira (TUM)

2 Current challenges in large-scale structure simulations

Speaker: Volker Springel (MPA)

3 A new view on the Universe with Fast Radio Bursts

Speaker: Steffen Hagstotz (LMU)

4 DISCO-DJ: DIfferentiable Simulations for COsmology - Done with Jax

Speaker: Florian List (Max Planck Institute for Astrophysics)

Florian_List_LSS_Days_Munich.pdf

5 Web-Halo Model of Large Scale Structure

Speaker: Samuel Brieden (Institute for Theoretical Particle Physics and Cosmology, RWTH Aachen)

WHMofLSS_Munich_sbrieden.pdf

10:35 Coffee break

N-point statistics and beyond

Convener: Toshiki Kurita

6 Aletheia: modelling the non-linear density field with evolution mapping

Speaker: Ariel Sanchez (Max Planck Institute for Extraterrestrial Physics)

7 The renormalization group for LSS

Speaker: Henrique Rubira

LSSdays_25_10_20_RG.pdf

8 Multi-tracer beyond linear theory

Speaker: Francesco Conteddu (MPA)

Munich-LSS_days_UPLOADED.pdf

9 Correlators in the sky: from unequal time angular correlators to the 3D spectra

Speaker: Zvonimir Vlah

10 Bye binormal: analysing the joint PDF of galaxy density and weak lensing convergence

Speaker: Oliver Friedrich (LMU Observatory)

Munich_LSS_Oct25.pdf

12:50 Lunch break

N-point statistics and beyond: Beyond N-point & SBI

Convener: Julia Stadler (Ludwig-Maximilians-Universität München)

11 Testing Cosmological model with Npoint and Composite-Field Galaxy Correlators

Speaker: Azadeh Moradinezhad

12 C3NN: Fast Extraction of N-Point Information with Physics-Informed Neural Networks

Speaker: Kai Lehman (LMU Munich)

13 Forward-modelling Stage IV galaxy surveys for next-generation cosmological measurements

Speaker: Luca Tortorelli (University Observatory, Ludwig-Maximilians Universitaet Muenchen)

Tortorelli_LSS_days_talk.pdf

14 A generative model for galaxy spectra

Speaker: Nikolas Frediani (LMU Munich)

Munich LSS Days Frediani.pdf

15 A galaxy cluster analysis with SBI

Speaker: Sophie Vogt (LMU/MPA)

16:10 Coffee break

N-point statistics and beyond: Field level & CMB

Convener: Sebastian Bocquet (LMU Munich)

16 Field-level simulation-based inference for masked and noisy data

Speaker: Oleg Savchenko (GRAPPA, University of Amsterdam)

17 Connecting Field-level and Summary Statistics from Galaxy Clustering

Speaker: Ivana Nikolac (MPA)

18 Measuring the running of galaxy bias

Speaker: Hsiang-Ming Huang

measuring_rgflow.pdf

19 Simulating the Initial Conditions of the Universe

Speaker: Drew Jamieson (MPA)

20 Connecting the CMB and Large-Scale Structure: From ACT to the Simons Observatory

I will present recent results from the Atacama Cosmology Telescope, with a focus on galaxy clusters, CMB lensing, and cross-correlations with galaxy surveys. These measurements demonstrate how CMB observations are becoming increasingly relevant for studying the late-time Universe. I will then introduce the Simons Observatory and describe how its large-aperture telescope will not only deliver improved versions of the existing microwave-sky observables, but also become sensitive to a different observable: the kinetic Sunyaev-Zeldovich (kSZ) effect. Once combined with a galaxy survey, this small-scale CMB signal has the potential to reconstruct the large-scale three-dimensional matter field with substantially lower effective noise than the galaxy survey by itself. I will conclude with a brief overview of recent kSZ results and upcoming challenges.

Speaker: Dr Adriaan Duivenvoorden (MPA Garching)

Conference dinner

At Georgenhof, https://maps.app.goo.gl/vAgyfsBQ2uUWsCMY9

Venue

Tuesday 21 October

Galaxy clustering: DESI & Cosmological parameters

Convener: Mathias Garny (TUM)

21 DESI and a Decade of Cosmological Tensions from Galaxy Surveys

Speaker: Daniel Gruen (LMU Munich)

22 Measuring the Growth Rate of Structure with DESI Peculiar Velocities

Speaker: Christoph Saulder (MPE)

23 Parity Violation

Speaker: Zachary Slepian (University of Florida)

24 The Cosmic Fix: Late-time solutions to an early-time problem (and vice versa)

Speaker: Nils Schöneberg (LMU Munich)

2025_10_21_Munich_LSS.pdf

10:50 Coffee break

Beyond galaxy clustering: Beyond the locations of galaxies

Convener: Noemi Anau Montel (Max Planck Institute for Astrophysics)

25 Loops for large-scale structure with COBRA

Speaker: Thomas Bakx (Utrecht University)

26 A short history of KiDS cosmic shear measurements - a.k.a. Euclid from the ground

Speaker: Hendrik Hildebrandt (Ruhr University Bochum)

27 A Golden Age for Galaxy Clusters? From Current Surveys to the Euclid Era

Galaxy clusters are powerful cosmological probes, sensitive to both the growth of structure and the geometry of the Universe. With the advent of new optical and near-infrared surveys such as Euclid, DES, DESI, and LSST, we are entering an era in which clusters can be detected and characterised across an unprecedented redshift range and volume. These datasets, complemented by millimetre and X-ray observations from surveys like SPT and eROSITA, allow us to explore the cluster population in a truly multiwavelength framework.
With the first Euclid data release (Q1), we have now begun identifying and characterising galaxy clusters, marking an important milestone towards precise cosmological measurements. I will present these first results in the broader context of current cluster surveys, discuss the main challenges ahead and outline the next steps in exploiting Euclid’s full potential for cluster cosmology. In parallel, I will show how deep, multiwavelength studies of individual systems shed light on the nature of dark matter and the internal structure of halos.

Speaker: Barbara Sartoris (USM-LMU)

13:00 Lunch break

Beyond galaxy clustering: Line intensity mapping

Convener: Nils Schöneberg (LMU Munich)

28 Cosmology from HETDEX

Speaker: Jeongin Moon (Max Planck Institute fo Astrophysics)

29 Lyman-alpha Intensity Mapping with HETDEX

Speaker: Maja Lujan Niemeyer (MPA)

30 Next steps for Line-Intensity Mapping

Speaker: José Luis Bernal (MPA)

JLB_LSSdays_Munich-.pdf

31 The Neutrino Mass Bound from Leptogenesis Revisited

Speaker: Edward Wang (TUM)

15:50 Coffee break

Beyond galaxy clustering: Novel approaches to LSS

Convener: Steffen Hagstotz (LMU)

32 Testing gravity and dark matter with the distortion of time

Speaker: Sveva Castello (Max Planck Institute for Astrophysics)

SvevaCastello_Distortion_of_Time.pdf

33 Cosmology with Cosmic Void Counts

Speaker: Sofia Contarini (Max Planck Institute for Extraterrestrial Physics)

Beyond galaxy clustering: Parity

Convener: Steffen Hagstotz (LMU)

34 Probing Parity Odd Information with Weak Gravitational Lensing Trispectrum

Speaker: Sijin Chen (LMU Munich)

35 Nonlinear Evolution of the Matter Trispectrum with Primordial Parity Violation

Speaker: Sha Azyzy (Max Planck Institute for Astrophysics)

LSS_days_Sha.pdf

Wrap up and discussion