Opendata, web and dolomites


A holistic approach to large-scale structure cosmology

Total Cost €


EC-Contrib. €






Project "BAHAMAS" data sheet

The following table provides information about the project.


Organization address
postcode: L3 5UX

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country United Kingdom [UK]
 Total cost 1˙725˙982 €
 EC max contribution 1˙725˙982 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-COG
 Funding Scheme ERC-COG
 Starting year 2018
 Duration (year-month-day) from 2018-06-01   to  2023-05-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

The standard model of cosmology, the É…CDM model, is remarkably successful at explaining a wide range of observations of our Universe. However, it is now being subjected to much more stringent tests than ever before, and recent large-scale structure (LSS) measurements appear to be in tension with its predictions. Is this tension signalling that new physics is required? For example, time-varying dark energy, or perhaps a modified theory of gravity? A contribution from massive neutrinos? Before coming to such bold conclusions we must be certain that all of the important systematic errors in the LSS tests have been accounted for. Presently, the largest source of systematic uncertainty is from the modelling of complicated astrophysical phenomena associated with galaxy formation. In particular, energetic feedback processes associated with star formation and black hole growth can heat and expel gas from collapsed structures and modify the large-scale distribution of matter. Furthermore, the LSS field is presently separated into many sub-fields (each using different models, that usually neglect feedback), preventing a coherent analysis. Cosmological hydrodynamical simulations (are the only method which) can follow all the relevant matter components and self-consistently capture the effects of feedback. I have been leading the development of large-scale simulations with physically-motivated prescriptions for feedback that are unrivalled in their ability to reproduce the observed properties of massive systems. With ERC support, I will build a team to exploit these developments, to produce a suite of simulations designed specifically for LSS cosmology applications with the effects of feedback realistically accounted for and which will allow us to unite the different LSS tests. My team and I will make the first self-consistent comparisons with the full range of LSS cosmology tests, and critically assess the evidence for physics beyond the standard model.


year authors and title journal last update
List of publications.
2019 Tilman Tröster, Cameron Ferguson, Joachim Harnois-Déraps, Ian G McCarthy
Painting with baryons: augmenting N-body simulations with gas using deep generative models
published pages: L24-L29, ISSN: 1745-3933, DOI: 10.1093/mnrasl/slz075
Monthly Notices of the Royal Astronomical Society: Letters 487/1 2020-02-13
2020 Sam G Stafford, Ian G McCarthy, Robert A Crain, Jaime Salcido, Joop Schaye, Andreea S Font, Juliana Kwan, Simon Pfeifer
The BAHAMAS project: Effects of a running scalar spectral index on large-scale structure
published pages: , ISSN: 0035-8711, DOI: 10.1093/mnras/staa129
Monthly Notices of the Royal Astronomical Society 2020-02-13
2019 David Harvey, Andrew Robertson, Richard Massey, Ian G McCarthy
Observable tests of self-interacting dark matter in galaxy clusters: BCG wobbles in a constant density core
published pages: 1572-1579, ISSN: 0035-8711, DOI: 10.1093/mnras/stz1816
Monthly Notices of the Royal Astronomical Society 488/2 2020-02-13
2020 Jaime Salcido, Richard G Bower, Tom Theuns
How feedback shapes galaxies: an analytic model
published pages: 5083-5100, ISSN: 0035-8711, DOI: 10.1093/mnras/stz3156
Monthly Notices of the Royal Astronomical Society 491/4 2020-02-13
2020 Hideki Tanimura, Gary Hinshaw, Ian G McCarthy, Ludovic Van Waerbeke, Nabila Aghanim, Yin-Zhe Ma, Alexander Mead, Tilman Tröster, Alireza Hojjati, Bruno Moraes
Probing hot gas around luminous red galaxies through the Sunyaev-Zel’dovich effect
published pages: , ISSN: 0035-8711, DOI: 10.1093/mnras/stz3130
Monthly Notices of the Royal Astronomical Society 2020-02-12
2020 Marcel P van Daalen, Ian G McCarthy, Joop Schaye
Exploring the effects of galaxy formation on matter clustering through a library of simulation power spectra
published pages: 2424-2446, ISSN: 0035-8711, DOI: 10.1093/mnras/stz3199
Monthly Notices of the Royal Astronomical Society 491/2 2020-02-12
2019 Jonathan J Davies, Robert A Crain, Ian G McCarthy, Benjamin D Oppenheimer, Joop Schaye, Matthieu Schaller, Stuart McAlpine
The gas fractions of dark matter haloes hosting simulated ∼ L ⋆ galaxies are governed by the feedback history of their black holes
published pages: , ISSN: 0035-8711, DOI: 10.1093/mnras/stz635
Monthly Notices of the Royal Astronomical Society 2020-02-12
2019 Nora Elisa Chisari, Alexander J. Mead, Shahab Joudaki, Pedro G. Ferreira, Aurel Schneider, Joseph Mohr, Tilman Tröster, David Alonso, Ian G. McCarthy, Sergio Martin-Alvarez, Julien Devriendt, Adrianne Slyz, Marcel P. van Daalen
Modelling baryonic feedback for survey cosmology
published pages: , ISSN: 2565-6120, DOI: 10.21105/astro.1905.06082
The Open Journal of Astrophysics 2/1 2020-02-12
2019 Andrew Robertson, David Harvey, Richard Massey, Vincent Eke, Ian G McCarthy, Mathilde Jauzac, Baojiu Li, Joop Schaye
Observable tests of self-interacting dark matter in galaxy clusters: cosmological simulations with SIDM and baryons
published pages: 3646-3662, ISSN: 0035-8711, DOI: 10.1093/mnras/stz1815
Monthly Notices of the Royal Astronomical Society 488/3 2020-02-12
2019 Adrien C R Thob, Robert A Crain, Ian G McCarthy, Matthieu Schaller, Claudia D P Lagos, Joop Schaye, Geert Jan J Talens, Philip A James, Tom Theuns, Richard G Bower
The relationship between the morphology and kinematics of galaxies and its dependence on dark matter halo structure in EAGLE
published pages: 972-987, ISSN: 0035-8711, DOI: 10.1093/mnras/stz448
Monthly Notices of the Royal Astronomical Society 485/1 2020-02-12

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