A model for a dark matter core at the Galactic Centre

K. Boshkayev, Daniele Malafarina

Research output: Contribution to journalArticle

Abstract

We consider a toy model for the supermassive compact object at the Galactic centre that does not require the presence of a black hole. We assume a matter distribution of weakly interacting particles with a density profile inferred from dark matter profiles in the outer regions. We show that rotation curves close to the centre of the Milky Way Galaxy can be explained within this model. We also show that the motion of test particles (stars) at distances of the order of 100 au cannot be distinguished from the motion of corresponding particles in the Schwarzschild geometry. However, differences arise at shorter distances, suggesting that it could be possible to observationally test the validity of the model in the near future.

Original languageEnglish
Pages (from-to)3325-3333
Number of pages9
JournalMonthly Notices of the Royal Astronomical Society
Volume484
Issue number3
DOIs
Publication statusPublished - Jan 1 2019

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dark matter
Milky Way Galaxy
profiles
geometry
stars
curves
particle
test
distribution

Keywords

  • Black hole physics
  • Dark matter
  • Galaxy: nucleus
  • Gravitation

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

A model for a dark matter core at the Galactic Centre. / Boshkayev, K.; Malafarina, Daniele.

In: Monthly Notices of the Royal Astronomical Society, Vol. 484, No. 3, 01.01.2019, p. 3325-3333.

Research output: Contribution to journalArticle

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