Testing modified gravity theory in the Milky Way

LIC. CAROLINA NEGRELLI; MS. MARIA BENITO; DR SUSANA LANDAU; DR. FABIO IOCCO; DR. LUCILA KRAISELBURD

PHYSICAL REVIEW D

AMER PHYSICAL SOC

Lugar: New York; Año: 2018

1550-7998

We perform a test of John Moffat´s Modied Gravity theory (MOG) within the Milky Way, adopting the well known "Rotation Curve" method. We use the dynamics of observed tracers within the disk to determine the gravitational potential as a function of galactocentric distance,and compare that with the potential that is expected to be generated by the visible component only (stars and gas) under different "flavors" of the MOG theory, making use of a "state of the art" setup for both the observed tracers and baryonic morphology. Our analysis shows that in both the original and the modied version (considering a self-consistent evaluation of the Milky Way mass), the theory fails to reproduce the observed rotation curve. We conclude that in none of its present formulation, the MOG theory is able to explain the observed Rotation Curve of the Milky Way.