Gravitational microlensing as a test of a finite-width disk model of the Galaxy

Abstract

The aim of this work is to show, in the framework of a simple finite-width disk model, that the amount of mass seen through gravitational microlensing measurements in the region $0<R<R0$ is consistent with the dynamical mass ascertained from Galaxy rotation after subtracting gas contribution. Since microlensing only detects compact objects, this result suggests that a non-baryonic mass component may be negligible in this region.

10 pages, 12 figures

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• A Galactic Ring of Minimum Stellar Density Near the Solar Orbit Radius
• Constraining the vertical structure of the Milky Way rotation by microlensing in a finite-width global disk model
• Galaxy rotation curve from classical Cepheids
• A lower bound on the Milky Way mass from general phase-space distribution function models
• Velocity-density twin transforms in thin disk model
• Motion of halo compact objects in the gravitational potential of a low-mass model of the Galaxy
• Generalized three body problem and the instability of the core-halo objects in binary systems