Galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles

Galaxies show different halo scaling relations such as the radial acceleration relation, the mass discrepancy acceleration relation (MDAR), or the dark matter (DM) surface density relation. At difference with traditional studies using phenomenological ΛCDM halos, we analyze the above relations assum...

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Autores principales: Krut, A., Argüelles, Carlos Raúl, Chavanis, P. H., Rueda, J. A., Ruffini, R.
Formato: Articulo
Lenguaje:Inglés
Publicado: 2023
Materias:
Ciencias Astronómicas
Galaxy dynamics
Galaxy structure
Galaxy physics
Dark matter
Galaxy dark matter halos
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/152518
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-152518
record_format dspace
spelling I19-R120-10915-1525182023-05-05T20:06:26Z http://sedici.unlp.edu.ar/handle/10915/152518 issn:1538-4357 Galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles Krut, A. Argüelles, Carlos Raúl Chavanis, P. H. Rueda, J. A. Ruffini, R. 2023-03 2023-05-05T16:09:21Z en Ciencias Astronómicas Galaxy dynamics Galaxy structure Galaxy physics Dark matter Galaxy dark matter halos Galaxies show different halo scaling relations such as the radial acceleration relation, the mass discrepancy acceleration relation (MDAR), or the dark matter (DM) surface density relation. At difference with traditional studies using phenomenological ΛCDM halos, we analyze the above relations assuming that DM halos are formed through a maximum entropy principle (MEP) in which the fermionic (quantum) nature of the DM particles is dully accounted for. For the first time, a competitive DM model based on first physical principles, such as (quantum) statistical-mechanics and thermodynamics, is tested against a large data set of galactic observables. In particular, we compare the fermionic DM model with empirical DM profiles: the Navarro–Frenk–White (NFW) model, a generalized NFW model accounting for baryonic feedback, the Einasto model, and the Burkert model. For this task, we use a large sample of 120 galaxies taken from the Spitzer Photometry and Accurate Rotation Curves data set, from which we infer the DM content to compare with the models. We find that the radial acceleration relation and MDAR are well explained by all the models with comparable accuracy, while the fits to the individual rotation curves, in contrast, show that cored DM halos are statistically preferred with respect to the cuspy NFW profile. However, very different physical principles justify the flat inner-halo slope in the most-favored DM profiles: while generalized NFW or Einasto models rely on complex baryonic feedback processes, the MEP scenario involves a quasi-thermodynamic equilibrium of the DM particles. Instituto de Astrofísica de La Plata Articulo Articulo http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) application/pdf
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Galaxy dynamics
Galaxy structure
Galaxy physics
Dark matter
Galaxy dark matter halos
spellingShingle Ciencias Astronómicas
Galaxy dynamics
Galaxy structure
Galaxy physics
Dark matter
Galaxy dark matter halos
Krut, A.
Argüelles, Carlos Raúl
Chavanis, P. H.
Rueda, J. A.
Ruffini, R.
Galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles
topic_facet Ciencias Astronómicas
Galaxy dynamics
Galaxy structure
Galaxy physics
Dark matter
Galaxy dark matter halos
description Galaxies show different halo scaling relations such as the radial acceleration relation, the mass discrepancy acceleration relation (MDAR), or the dark matter (DM) surface density relation. At difference with traditional studies using phenomenological ΛCDM halos, we analyze the above relations assuming that DM halos are formed through a maximum entropy principle (MEP) in which the fermionic (quantum) nature of the DM particles is dully accounted for. For the first time, a competitive DM model based on first physical principles, such as (quantum) statistical-mechanics and thermodynamics, is tested against a large data set of galactic observables. In particular, we compare the fermionic DM model with empirical DM profiles: the Navarro–Frenk–White (NFW) model, a generalized NFW model accounting for baryonic feedback, the Einasto model, and the Burkert model. For this task, we use a large sample of 120 galaxies taken from the Spitzer Photometry and Accurate Rotation Curves data set, from which we infer the DM content to compare with the models. We find that the radial acceleration relation and MDAR are well explained by all the models with comparable accuracy, while the fits to the individual rotation curves, in contrast, show that cored DM halos are statistically preferred with respect to the cuspy NFW profile. However, very different physical principles justify the flat inner-halo slope in the most-favored DM profiles: while generalized NFW or Einasto models rely on complex baryonic feedback processes, the MEP scenario involves a quasi-thermodynamic equilibrium of the DM particles.
format Articulo
Articulo
author Krut, A.
Argüelles, Carlos Raúl
Chavanis, P. H.
Rueda, J. A.
Ruffini, R.
author_facet Krut, A.
Argüelles, Carlos Raúl
Chavanis, P. H.
Rueda, J. A.
Ruffini, R.
author_sort Krut, A.
title Galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles
title_short Galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles
title_full Galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles
title_fullStr Galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles
title_full_unstemmed Galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles
title_sort galaxy rotation curves and universal scaling relations: comparison between phenomenological and fermionic dark matter profiles
publishDate 2023
url http://sedici.unlp.edu.ar/handle/10915/152518
work_keys_str_mv AT kruta galaxyrotationcurvesanduniversalscalingrelationscomparisonbetweenphenomenologicalandfermionicdarkmatterprofiles
AT arguellescarlosraul galaxyrotationcurvesanduniversalscalingrelationscomparisonbetweenphenomenologicalandfermionicdarkmatterprofiles
AT chavanisph galaxyrotationcurvesanduniversalscalingrelationscomparisonbetweenphenomenologicalandfermionicdarkmatterprofiles
AT ruedaja galaxyrotationcurvesanduniversalscalingrelationscomparisonbetweenphenomenologicalandfermionicdarkmatterprofiles
AT ruffinir galaxyrotationcurvesanduniversalscalingrelationscomparisonbetweenphenomenologicalandfermionicdarkmatterprofiles
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