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arXiv · 1010.1312

A past capture event at Sagittarius A* inferred from the fluorescent X-ray emission of Sagittarius B clouds

Yun-Wei Yu·K. S. Cheng·D. O. Chernyshov·V. A. Dogiel
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Abstract

The fluorescent X-ray emission from neutral iron in the molecular clouds (Sgr B) indicates that the clouds are being irradiated by an external X-ray source. The source is probably associated with the Galactic central black hole (Sgr A*), which triggered a bright outburst one hundred years ago. We suggest that such an outburst could be due to a partial capture of a star by Sgr A*, during which a jet was generated. By constraining the observed flux and the time variability ($\sim$ 10 years) of the Sgr B's fluorescent emission, we find that the shock produced by the interaction of the jet with the dense interstellar medium represents a plausible candidate for the X-ray source emission.

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Yun-Wei Yu, K. S. Cheng, D. O. Chernyshov, V. A. Dogiel. 2010-10-07. A past capture event at Sagittarius A* inferred from the fluorescent X-ray emission of Sagittarius B clouds. https://doi.org/10.1111/j.1365-2966.2010.17826.x

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