Cosmic Large-Scale Structure in the IllustrisTNG Simulations

Volker Springel (), Annalisa Pillepich (), Rainer Weinberger (), Rüdiger Pakmor (), Lars Hernquist (), Dylan Nelson (), Shy Genel (), Mark Vogelsberger (), Federico Marinacci (), Jill Naiman () and Paul Torrey ()
Additional contact information
Volker Springel: Astronomisches Recheninstitut, Zentrum für Astronomie der Universität Heidelberg
Annalisa Pillepich: Max-Planck Institute for Astronomy
Rainer Weinberger: Heidelberg Institute for Theoretical Studies
Rüdiger Pakmor: Heidelberg Institute for Theoretical Studies
Lars Hernquist: Harvard University, Center for Astrophysics
Dylan Nelson: Max-Planck Institute for Astrophysics
Shy Genel: Columbia University, Department of Astronomy
Mark Vogelsberger: Kavli Institute for Astrophysics and Space Research, MIT
Federico Marinacci: Kavli Institute for Astrophysics and Space Research, MIT
Jill Naiman: Harvard University, Center for Astrophysics
Paul Torrey: Kavli Institute for Astrophysics and Space Research, MIT

A chapter in High Performance Computing in Science and Engineering ' 17, 2018, pp 21-36 from Springer

Abstract: Abstract We have finished two new, extremely large hydrodynamical simulations of galaxy formation that significantly advance the state of the art in cosmology. Together with accompanying dark matter only runs, we call them ‘IllustrisTNG’, the next generation Illustris simulations. Our largest and most ambitious calculation follows a cosmological volume 300 megaparsecs on a side and self-consistently solves the equations of magnetohydrodynamics and self-gravity coupled to the fundamental physical processes driving galaxy formation. We have employed AREPO, a sophisticated moving-mesh code developed by our team over the past 7 years and equipped with an improved, multi-purpose galaxy formation physics model. The simulated universe contains tens of thousands of galaxies encompassing a variety of environments, mass scales and evolutionary stages. The groundbreaking volume of TNG enables us to sample statistically significant sets of rare astrophysical objects like rich galaxy clusters, and to study galaxy formation and the spatial clustering of matter over a very large range of spatial scales. Here we report some early results on the matter and galaxy clustering found in the simulations. The two-point galaxy correlation function of our largest simulation agrees extremely well with the best available observational constraints from the Sloan Digital Sky Survey, both as a function of galaxy stellar mass and color. The predicted impact of baryonic physics on the matter power spectrum is sizeable and needs to be taken into account in precision studies of cosmology. Interestingly, this impact appears to be fairly robust to the details of the modelling of supermassive black holes, provided this reproduces the scaling properties of the intracluster medium of galaxy clusters.

Date: 2018
References: Add references at CitEc
Citations:

There are no downloads for this item, see the EconPapers FAQ for hints about obtaining it.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-319-68394-2_2

Ordering information: This item can be ordered from
http://www.springer.com/9783319683942

DOI: 10.1007/978-3-319-68394-2_2

Access Statistics for this chapter

More chapters in Springer Books from Springer
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().