Dark matter equation of state from rotational curves of galaxies | Zendy

J. Barranco | Zendy; Argelia Bernal | Zendy; Darío Núñez | Zendy

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Dark matter equation of state from rotational curves of galaxies

Author(s) -

J. Barranco,

Argelia Bernal,

Darío Núñez

Publication year - 2015

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/stv302

Subject(s) - physics , equation of state , barotropic fluid , galaxy rotation curve , dark matter , dark matter halo , hydrostatic equilibrium , galaxy , astrophysics , dark fluid , scalar field dark matter , classical mechanics , dark energy , halo , cosmology , mechanics , astronomy , quantum mechanics

In this work, we model galactic haloes describing the dark matter as a non-zero pressure fluid and derive, not impose, a dark matter equation of state by using observational data of the rotation curves of galaxies. In order to reach hydrostatic equilibrium, as expected for the halo, it is mandatory that dark fluid's pressure should not be zero. The equation of state is obtained by solving the matt...

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