Cosmology and Structure Formation

Current Research

Testing the standard model, quantifying tensions with other cosmological probes
Tests of modified gravity using galaxy cluster counts and cluster matter profiles
Constraints on interacting dark matter models
Constraints on baryonic feedback and its impact on the matter power spectrum
Combining weak lensing and galaxy cluster clustering as a probe

The promise of weak lensing voids as cosmological probes in the era of Euclid and Rubin
Weak lensing voids in the Dark Energy Survey dataset

Understanding the linkage between HI and the star formation rate in galaxies over a range of environments
Creating the largest available samples of X-ray and SZE selected galaxy clusters
Impact of baryonic feedback on galaxy clusters and the matter power spectrum
Connections between voids defined using weak lensing, galaxies and galaxy clusters

Preparation and delivery of the ground based EXTernal datasets
Optimal photometric calibration across the sky using the Gaia spectrophotometry as a baseline
Joint cataloging of ground based and Euclid VIS and NIR imaging
Development of joint Rubin-Euclid Photometry System (REPS) to enable Euclid cosmology with Rubin photometry

Development and optimization of OTF imaging pipelines for the application to MeerKAT data
Application of OTF pipelines to the MeerKLASS L-band and UHF-band survey datasets to produce deep radio continuum source catalogs

Algorithms and code for weak lensing mass calibration of galaxy clusters
Algorithms and code for studies of the clustering of galaxy clusters
Development of joint Euclid+Rubin data analysis tools

Collaborative development of a federated research analysis infrastructure in Germany that serves the Particle, Astro/Cosmology, Nuclear and Particle Astrophysics communities

Publications

Click here for all publications.

International Collaborations

The Chair is involved in multiple international collaborations. Click here for more information.

People

Prof. Dr. Joseph Mohr

Professor, Chair for Cosmology and Structure Formation

Cosmology, galaxy clusters, large scale structure, galaxy evolution, multi-wavelength surveys, instrumentation/software

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+498921805967

Dr. Sebastian Bocquet

Senior Staff Scientist

cosmology, galaxy clusters, large-scale structure, Bayesian statistics, machine learning

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Dr. Chris Davies

Staff Scientist

Studies of cosmology and structure formation with voids, clusters and weak lensing.

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Dr. Matthias Klein

Staff Scientist

Large multi-wavelength surveys, galaxy clusters: cosmology & astrophysics, galaxy evolution, Radio & X-ray AGN, LSS

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Dr. Sambit Roychowdhury

Research Fellow

Cosmic structure formation and evolution through observations of neutral gas

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Dr. Sarvesh Mangla

Research Fellow

Radio astronomy, interferometric imaging in MeerKLASS survey, inferring structure in the upper atmosphere with radio data

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Dr. Koshy George

Research Fellow

Star formation quenching in galaxies (Ram-pressure stripping, AGN feedback, Action of Stellar bar) and the Euclid Mission

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Dr. Daniel Hernandez-Lang

Research Fellow

Cosmology, galaxy cluster catalogs, galaxy evolution, radio astronomy surveys and the Euclid mission.

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Dr. Thomas Vassallo

Research Fellow

Data analysis software supporting Euclid and Rubin cosmology

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Dr. Asmaa Mazoun

Research Fellow

Dark sector, interacting dark matter-dark radiation models, galaxy cluster abundance

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Dr. Martin Kümmel

Senior Software Developer

Computing in Science, Object detection and photometry within multi-wavelength surveys, including Euclid and REPS

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Aditya Singh

PhD student

Weak gravitational lensing, galaxy clusters, cosmology. Development of new analysis tools within the PUNCH4NFDI collaboration.

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Sophie Marie Louise Vogt

PhD student

Studies of growth of structure in modified gravity models using weak gravitational lensing and galaxy cluster datasets.

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Dandi Zhang

MSc student

Radio-AGN in X-ray selected galaxy clusters

Vera Tsurkis

MSc student

Sensitivity of the matter power spectrum to cluster counts datasets

Prabhanjan Kulkarni

MSc student

Radio astronomy studies of neutral hydrogen

Ben Sinan Steinhardt

BSc student

Baryon acoustic oscillations in beyond-standard model cosmologies

Jakob Feitzinger

BSc student

Baryon acoustic oscillations and gradient-based likelihoods

Mara Amelie Kühn

BSc student

Structure formation and its role in constraining cosmology

Alumni

Incomplete list of former group members:

Daniel Grossarth (BSc student)
Marijan Tabak (BSc student)
Pulak Pradhan (BSc student)
Mehar Chawla (MSc student)
Xu Han (MSc student)
Prateek Boga (MSc student)
Dr. Sebastian Grandis (Research scientist, University of Innsbruck) – former PhD student
Dr. Marina Ricci (Research scientist, CNRS- APC in Paris) – former Postdoctoral fellow
Dr. Nicola Malavasi (Marie Curie Fellow, MPE) - former Postdoctoral fellow
Dr. Veronica Strazzullo (Research scientist, Observatory Trieste) - former Research scientist
Dr. Maurilio Panella (Postdoctoral Fellow, Observatory Trieste) - former Postdoctoral fellow
Prof. Shantanu Desai (IIT Hyderabad) - former Postdoctoral fellow
Prof. I-Non Chiu (National Cheng Kung University (NCKU) Physics in Taiwan) - former PhD student
Dr. Nikhel Gupta (ML/AI Research Scientist, CSIRO in Western Australia) - former PhD student
Dr. Sebastian Bocquet (Senior Research scientist, LMU) - former PhD student
Prof. Alex Saro (University Trieste Physics) - former Research scientist
Dr. Alfredo Zenteno (Assistant Scientist, NOAO in US) - former PhD student
Dr. Jeeseon Song (Lecturer in Physics, United World College in Singapore) - former PhD student
Dr. Yen-Ting Lin (Research Fellow, ASIAA in Taiwan) - former PhD student
Prof. Subha Majumdar (TIFR, Mumbai) - former Postdoctoral Fellow

Professor Joseph Mohr on Galaxy Cluster Studies

Cosmology and Structure Formation

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Current Research

Publications

International Collaborations

People

Alumni

Professor Joseph Mohr on Galaxy Cluster Studies

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