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

By Szymon Sikora, Łukasz Bratek, Joanna Jałocha and Marek Kutschera

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.Comment: 10 pages, 12 figure

Topics: Astrophysics - Astrophysics of Galaxies
Year: 2012
DOI identifier: 10.1051/0004-6361/201219926
OAI identifier: oai:arXiv.org:1103.5056
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