Fokker-Planck entropic force model for galactic rotation curves

Vicente Said Morales-Salgado; Humberto Martínez-Huerta; Pedro Isaac Ramírez-Baca

Fokker-Planck entropic force model for galactic rotation curves

Vicente Said Morales-Salgado, Humberto Martínez-Huerta, Pedro Isaac Ramírez-Baca

Departamento de Física y Matemáticas

Research output: Contribution to journal › Article › peer-review

Abstract

We investigate the possible entropic nature of the force responsible for the discrepancy between the observed galactic rotation curves and those expected from the distribution of visible matter in the galaxy. Observations from the Spitzer Photometry and Accurate Rotation Curves (SPARC) data base are used to study the adequacy of the proposed models. A concrete model derived from a simple solution of the Fokker-Planck equation is used to fit SPARC data, resulting in strong agreement with observations compared to the popular dark matter NFW mass profile. We also show that correlations exist between a parameter of the proposed model and the flat velocity as well as the Luminosity at 3.6 μm of the sample of galaxies.

Original language	English
Number of pages	9
Journal	arXiv
Publication status	In preparation - 16 Nov 2022

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https://arxiv.org/abs/2201.05594

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title = "Fokker-Planck entropic force model for galactic rotation curves",

abstract = "We investigate the possible entropic nature of the force responsible for the discrepancy between the observed galactic rotation curves and those expected from the distribution of visible matter in the galaxy. Observations from the Spitzer Photometry and Accurate Rotation Curves (SPARC) data base are used to study the adequacy of the proposed models. A concrete model derived from a simple solution of the Fokker-Planck equation is used to fit SPARC data, resulting in strong agreement with observations compared to the popular dark matter NFW mass profile. We also show that correlations exist between a parameter of the proposed model and the flat velocity as well as the Luminosity at 3.6 μm of the sample of galaxies.",

author = "Morales-Salgado, {Vicente Said} and Humberto Mart{\'i}nez-Huerta and Ram{\'i}rez-Baca, {Pedro Isaac}",

year = "2022",

month = nov,

day = "16",

language = "English",

journal = "arXiv",

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TY - JOUR

T1 - Fokker-Planck entropic force model for galactic rotation curves

AU - Morales-Salgado, Vicente Said

AU - Martínez-Huerta, Humberto

AU - Ramírez-Baca, Pedro Isaac

PY - 2022/11/16

Y1 - 2022/11/16

N2 - We investigate the possible entropic nature of the force responsible for the discrepancy between the observed galactic rotation curves and those expected from the distribution of visible matter in the galaxy. Observations from the Spitzer Photometry and Accurate Rotation Curves (SPARC) data base are used to study the adequacy of the proposed models. A concrete model derived from a simple solution of the Fokker-Planck equation is used to fit SPARC data, resulting in strong agreement with observations compared to the popular dark matter NFW mass profile. We also show that correlations exist between a parameter of the proposed model and the flat velocity as well as the Luminosity at 3.6 μm of the sample of galaxies.

AB - We investigate the possible entropic nature of the force responsible for the discrepancy between the observed galactic rotation curves and those expected from the distribution of visible matter in the galaxy. Observations from the Spitzer Photometry and Accurate Rotation Curves (SPARC) data base are used to study the adequacy of the proposed models. A concrete model derived from a simple solution of the Fokker-Planck equation is used to fit SPARC data, resulting in strong agreement with observations compared to the popular dark matter NFW mass profile. We also show that correlations exist between a parameter of the proposed model and the flat velocity as well as the Luminosity at 3.6 μm of the sample of galaxies.

UR - https://arxiv.org/abs/2201.05594

M3 - Article

JO - arXiv

JF - arXiv

ER -

Fokker-Planck entropic force model for galactic rotation curves

Abstract

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