Investigation of the obscuring circumnuclear torus in the active galaxy Mrk231

Preprint

19 February 2003

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.astro-ph/0302395

Abstract

Here we report on observations of powerful hydroxyl (OH) line emissions that trace the obscuring material within the circumnuclear environment of the galaxy Markarian 231. The hydroxyl (mega)-maser emission shows the characteristics of a rotating, dusty, molecular torus (or thick disk) located between 30 and 100 pc from the central engine. We now have a clear view of the physical conditions, the kinematics and the spatial structure of this material on intermediate size scales, confirming the main tenets of unification models.

Keywords

OBSCURING CIRCUMNUCLEAR
CIRCUMNUCLEAR TORUS
SPATIAL STRUCTURE
GALAXY MRK231
ACTIVE GALAXY
HYDROXYL
TORUS

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