Constraining the vertical structure of the Milky Way rotation by microlensing in a finite-width global disk model

Abstract

In this paper we model the vertical structure of mass distribution of the Milky Way galaxy in the framework of a finite-width global disk model. Assuming the Galactic rotation curve only, we test inside the solar orbit the predictions of the model for two measurable and unrelated to each other processes: the gravitational microlensing that allows to fix the disk width-scale by the best fit to measurements, and the vertical gradient of rotation modelled in the quasi-circular orbits approximation. The former is sensitive to the gravitating mass in compact objects and the latter is sensitive to all kinds of gravitating matter. The analysis points to a small width-scale of the considered disks and, at most, insignificant contribution of non-baryonic dark mater in the solar circle. The predicted high vertical gradient values in the rotation are consistent with the gradient measurements.

10 pages, 10 figures

References in corpus (6)

• Galactic masers and the Milky Way circular velocity
• The Milky Way Rotation Curve and its Vertical Derivatives Inside the Solar Circle
• Microlensing as a probe of the Galactic structure; 20 years of microlensing optical depth studies
• Blending in Gravitational Microlensing Experiments: Source Confusion And Related Systematics
• Is dark matter present in NGC4736? An iterative spectral method for finding mass distribution in spiral galaxies
• Vertical gradients of azimuthal velocity in a global thin disk model of spiral galaxies NGC 2403, NGC 4559, NGC 4302 and NGC 5775

Cited by in corpus (3)

• Progress in the Global Modeling of the Galactic Magnetic Field
• Velocity-density twin transforms in thin disk model
• Modeling vertical structure in circular velocity of spiral galaxy NGC 4244