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20 April 2024

» arxiv » 1107.2923

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Can a Satellite Galaxy Merger Explain the Active Past of the Galactic Center?
Meagan Lang ; Kelly Holley-Bockelmann ; Tamara Bogdanovic ; Pau Amaro-Seoane ; Alberto Sesana ;
Date:	14 Jul 2011
Abstract:	Observations of the Galactic Center (GC) have accumulated a multitude of "forensic" evidence indicating that several million years ago the center of the Milky Way galaxy was teaming with starforming and accretion-powered activity -- this paints a rather different picture from the GC as we understand it today. We examine a possibility that this epoch of activity could have been triggered by the infall of a satellite galaxy into the Milky Way which began at the redshift of 10 and ended few million years ago with a merger of the Galactic supermassive black hole with an intermediate mass black hole brought in by the inspiralling satellite.
Source:	arXiv, 1107.2923
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