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Journal Article

Can a Satellite Galaxy Merger Explain the Active Past of the Galactic Center?

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Amaro-Seoane,  Pau
Astrophysical Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society;

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1107.2923.pdf
(Preprint), 376KB

MNRAS430_2574.pdf
(Any fulltext), 565KB

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Citation

Lang, M., Holley-Bockelmann, K., Bogdanovic, T., Amaro-Seoane, P., Sesana, A., & Sinha, M. (2013). Can a Satellite Galaxy Merger Explain the Active Past of the Galactic Center? Monthly Notices of the Royal Astronomical Society, 430, 2574-2584. doi:10.1093/mnras/sts638.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0015-190F-4
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.