Cristian Barrera Hinojosa cristian.g.barrera@durham.ac.uk
PGR Student Doctor of Philosophy
Vector modes in ΛCDM: the gravitomagnetic potential in dark matter haloes from relativistic N-body simulations
Barrera-Hinojosa, Cristian; Li, Baojiu; Bruni, Marco; He, Jian-hua
Authors
Professor Baojiu Li baojiu.li@durham.ac.uk
Professor
Marco Bruni
Jian-hua He
Abstract
We investigate the transverse modes of the gravitational and velocity fields in Λ cold dark matter, based on a high-resolution simulation performed using the adaptive-mesh refinement general-relativistic N-body code GRAMSES. We study the generation of vorticity in the dark matter velocity field at low redshift, providing fits to the shape and evolution of its power spectrum over a range of scales. By analysing the gravitomagnetic vector potential, that is absent in Newtonian simulations, in dark matter haloes with masses ranging from ∼1012.5 to ∼1015 h−1 M⊙, we find that its magnitude correlates with the halo mass, peaking in the inner regions. Nevertheless, on average, its ratio against the scalar gravitational potential remains fairly constant, below percent level, decreasing roughly linearly with redshift and showing a weak dependence on halo mass. Furthermore, we show that the gravitomagnetic acceleration in haloes peaks towards the core and reaches almost 10−10h cm s−2 in the most massive halo of the simulation. However, regardless of the halo mass, the ratio between the gravitomagnetic force and the standard gravitational force is typically at around the 10−5 level inside the haloes, again without significant radius dependence. This result confirms that the gravitomagnetic effects have negligible impact on structure formation, even for the most massive structures, although its behaviour in low-density regions remains to be explored. Likewise, the impact on observations remains to be understood in the future.
Citation
Barrera-Hinojosa, C., Li, B., Bruni, M., & He, J. (2021). Vector modes in ΛCDM: the gravitomagnetic potential in dark matter haloes from relativistic N-body simulations. Monthly Notices of the Royal Astronomical Society, 501(4), 5697-5713. https://doi.org/10.1093/mnras/staa4025
Journal Article Type | Article |
---|---|
Acceptance Date | Dec 21, 2020 |
Online Publication Date | Jan 5, 2021 |
Publication Date | 2021-03 |
Deposit Date | Jul 2, 2021 |
Publicly Available Date | Jul 2, 2021 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 501 |
Issue | 4 |
Pages | 5697-5713 |
DOI | https://doi.org/10.1093/mnras/staa4025 |
Public URL | https://durham-repository.worktribe.com/output/1245694 |
Files
Published Journal Article
(4.4 Mb)
PDF
Copyright Statement
This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society. ©: 2021 The Authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
You might also like
Minkowski functionals of large-scale structure as a probe of modified gravity
(2024)
Journal Article
Where shadows lie: reconstruction of anisotropies in the neutrino sky
(2023)
Journal Article
MGLENS: Modified gravity weak lensing simulations for emulation-based cosmological inference
(2023)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search