@Article{DantasRibeCape:2018:TwViTh,
author = "Dantas, Christine C. and Ribeiro, Andr{\'e} L. B. and Capelato,
Hugo Vicente",
affiliation = "{Departamento de Ciencia e Tecnologia Aeroespacial (DCTA)} and
{Universidade Estadual de Santa Cruz} and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "The two-component virial theorem and the acceleration–discrepancy
relation",
journal = "Monthly Notices of the Royal Astronomical Society",
year = "2018",
volume = "474",
number = "1",
pages = "618--624",
month = "Feb.",
keywords = "galaxies: fundamental parameters, galaxies: kinematics and
dynamics, dark matter.",
abstract = "We revisit the 'two-component virial theorem' (2VT) in the light
of recent theoretical and observational results related to the
'dark matter problem'. This modification of the virial theorem
offers a physically meaningful framework to investigate possible
dynamical couplings between the baryonic and dark matter
components of extragalactic systems. In particular, we examine the
predictions of the 2VT with respect to the
'acceleration-discrepancy relation' (ADR). Considering the
combined data (composed of systems supported by rotation and by
velocity dispersion), we find the following: (i) The overall
behaviour of the 2VT is consistent with the ADR. (ii) The 2VT
predicts a nearly constant behaviour in the lower acceleration
regime, as suggested in recent data on dwarf spheroidals. We also
briefly comment on possible differentiations between the 2VT and
some modified gravity theories.",
doi = "10.1093/mnras/stx2785",
url = "http://dx.doi.org/10.1093/mnras/stx2785",
issn = "0035-8711 and 1365-2966",
language = "en",
targetfile = "dantas_two.pdf",
urlaccessdate = "27 abr. 2024"
}