The orbital phase space of contracted dark matter haloes
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We study the orbital phase space of dark matter (DM) haloes in the auriga suite of cosmological hydrodynamics simulations of Milky Way (MW) analogues. We characterize haloes by their spherical action distribution, $F\left(J_{{r}},L\right)$, a function of the specific angular momentum, L, and the radial action, Jr, of the DM particles. By comparing DM-only and hydrodynamical simulations of the same haloes, we investigate the contraction of DM haloes caused by the accumulation of baryons at the centre. We find a small systematic suppression of the radial action in the DM haloes of the hydrodynamical simulations, suggesting that the commonly used adiabatic contraction approximation can result in an underestimate of the density by $\sim 8{{ \rm {per\ cent}}}$. We apply an iterative algorithm to contract the auriga DM haloes given a baryon density profile and halo mass, recovering the true contracted DM profiles with an accuracy of $\sim 15{{ \rm {per\ cent}}}$, that reflects halo-to-halo variation. Using this algorithm, we infer the total mass profile of the MW’s contracted DM halo. We derive updated values for the key astrophysical inputs to DM direct detection experiments: the DM density and velocity distribution in the Solar neighbourhood.
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For MW and higher mass haloes, the effect of baryons on the DM halo is well described by the adiabatic contraction model, in which baryons slowly accumulate at the halo centre and the DM distribution distorts such that its action integrals remain approximately constant.
“For MW and higher mass haloes, the effect of baryons on the DM halo is well described by the adiabatic contraction model (Callingham et al. 2020), in which baryons slowly accumulate at the halo centre and the DM distribution distorts in such a way that its action integrals remain approximately constant”
From The milky way total mass profile as inferred from Gaia DR2 (2020) · cites this paper as Callingham et al. 2020
The response of the DM halo to the assembly of its galaxy can be predicted to good approximation using the adiabatic contraction method with same action integrals.
“The response of the DM halo to the assembly of its galaxy can be predicted to good approximation using the adiabatic contraction method in which the DM distribution is assumed to have the same action integrals in the hydrodynamic run as in the DMO case (Sellwood & McGaugh 2005; Callingham et al. 2020”
From The milky way total mass profile as inferred from Gaia DR2 (2020) · cites this paper as Callingham et al. 2020
Cites
The Apache Point Observatory Galactic Evolution Experiment (APOGEE)
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Contraction of dark matter galactic halos due to baryonic infall
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“An early example of this approach Blumenthal et al. (1986) effectively assumes that all particles are on circular orbits, a rather crude approximation that leads to excessive compression of the orbits.”
BackgroundResultThe mass distribution and gravitational potential of the Milky Way
McMillan, P. J. (2017) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stw2759 · Cited by 1,099 · see citing works
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The Milky Way total mass profile as inferred from Gaia DR2
Cautun, M., Benitez-Llambay, A., Deason, A. J., Frenk, C. S., Fattahi, A., Gómez, F. A., Grand, R. J. J., Oman, K. A., Navarro, J. F., & Simpson, C. M. (2019) · arXiv · doi:10.48550/arxiv.1911.04557 · Cited by 335
Self-citationThe milky way total mass profile as inferred from Gaia DR2
Cautun, M., Benítez-Llambay, A., Deason, A. J., Frenk, C. S., Fattahi, A., Gómez, F. A., Grand, R. J. J., Oman, K. A., Navarro, J. F., & Simpson, C. M. (2020) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/staa1017 · Cited by 332 · see citing works
Self-citationGalaxy-induced transformation of dark matter haloes: Transformations of CDM haloes
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The apostle project: Local Group kinematic mass constraints and simulation candidate selection
Fattahi, A., Navarro, J. F., Sawala, T., Frenk, C. S., Oman, K. A., Crain, R. A., Furlong, M., Schaller, M., Schaye, J., Theuns, T., et al. (2016) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stv2970 · Cited by 214 · see citing works
Self-citationThe mass of the Milky Way from satellite dynamics
Callingham, T. M., Cautun, M., Deason, A. J., Frenk, C. S., Wang, W., Gómez, F. A., Grand, R. J. J., Marinacci, F., & Pakmor, R. (2019) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/stz365 · Cited by 166 · see citing works
Self-citationThe Compression of Dark Matter Halos by Baryonic Infall
Sellwood, J. A., & McGaugh, S. S. (2005) · The Astrophysical Journal · doi:10.1086/491731 · Cited by 164 · see citing works
Broken degeneracies: the rotation curve and velocity anisotropy of the Milky Way halo
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The milky way total mass profile as inferred from Gaia DR2
Cautun, M., Benítez-Llambay, A., Deason, A. J., Frenk, C. S., Fattahi, A., Gómez, F. A., Grand, R. J. J., Oman, K. A., Navarro, J. F., & Simpson, C. M. (2020) · Monthly Notices of the Royal Astronomical Society · doi:10.1093/mnras/staa1017 · Cited by 332 · see citing works
Self-citationThe Milky Way total mass profile as inferred from Gaia DR2
Cautun, M., Benitez-Llambay, A., Deason, A. J., Frenk, C. S., Fattahi, A., Gómez, F. A., Grand, R. J. J., Oman, K. A., Navarro, J. F., & Simpson, C. M. (2019) · arXiv · doi:10.48550/arxiv.1911.04557 · Cited by 335
Self-citationKoop, O., Antoja, T., Helmi, A., Callingham, T. M., & Laporte, C. F. P. (2024) · Astronomy & Astrophysics · doi:10.1051/0004-6361/202450911 · Cited by 14 · see citing works
- Authors
- Callingham, T. M., Cautun, M., Deason, A. J., Frenk, C. S., Grand, R. J. J., Marinacci, F., & Pakmor, R.
- Affiliations
- Durham University (GB)
- Leiden University (NL)
- Max Planck Institute for Astrophysics (DE)
- University of Bologna (IT)
- Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Str. 1, D-85748 Garching, Germany
- Corresponding author
- Callingham, Thomas M
- ORCID
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 2020-04-24
- Volume
- 495
- Issue
- 1
- Pages
- 12-28
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W3000762801
- Cited by
- 23
- References
- 11
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 2 · 2023: 5 · 2022: 5 · 2021: 5 · 2020: 3
- FWCI
- 2.01
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model (vor)
- Locations
- Monthly Notices of the Royal Astronomical Society (publishedVersion)
- Durham Research Online (Durham University) (acceptedVersion)
- Liverpool John Moores University (acceptedVersion)
- arXiv (Cornell University) (submittedVersion)
- Leiden Repository (Leiden University) (submittedVersion)
- Durham Research Online (Durham University) (submittedVersion, cc-by)
- Data Archiving and Networked Services (DANS) (submittedVersion, other-oa)
- Archivio istituzionale della ricerca (Alma Mater Studiorum Università di Bologna) (submittedVersion, other-oa)
- MPG.PuRe (Max Planck Society) (submittedVersion)
- arXiv (Cornell University)
- Funders
- Science and Technology Facilities Council (ST/F001166/1, ST/I00162X/1, ST/P000541/1, ST/H008519/1, ST/K003267/1)
- ERC (GA 786910)
- EU Horizon 2020 research and innovation programme (794474)
- MIUR
- BIS (ST/K00042X/1)
- Durham University
- Topics
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Galaxies: Formation, Evolution, Phenomena
- Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Dark Matter and Cosmic Phenomena
- Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Stellar, planetary, and galactic studies
- Keywords
- dark matter halos, specific angular momentum, radial action, Milky Way dark matter halo, solar neighborhood, Auriga simulations
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