Jet interactions with a giant molecular cloud in the Galactic centre and ejection of hypervelocity stars

The hypervelocity OB stars in the Milky Way Galaxy were ejected from the central regions some 10-100 million years ago. We argue that these stars, {as well as many more abundant bound OB stars in the innermost few parsecs,} were generated by the interactions of an AGN jet from the central black hole...

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Published in:arXiv.org 2012-09
Main Authors: Silk, Joseph, Antonuccio-Delogu, Vincenzo, Dubois, Yohan, Gaibler, Volker, Haas, Marcel R, Khochfar, Sadegh, Krause, Martin
Format: Article
Language:English
Subjects:
Active galactic nuclei
Astrochemistry
Ejection
Hypervelocity
Intergalactic media
Jet interaction
Massive stars
Milky Way Galaxy
Molecular clouds
Stars
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creator Silk, Joseph
Antonuccio-Delogu, Vincenzo
Dubois, Yohan
Gaibler, Volker
Haas, Marcel R
Khochfar, Sadegh
Krause, Martin
description The hypervelocity OB stars in the Milky Way Galaxy were ejected from the central regions some 10-100 million years ago. We argue that these stars, {as well as many more abundant bound OB stars in the innermost few parsecs,} were generated by the interactions of an AGN jet from the central black hole with a dense molecular cloud. Considerations of the associated energy and momentum injection have broader implications for the possible origin of the Fermi bubbles and for the enrichment of the intergalactic medium.
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subjects Active galactic nuclei
Astrochemistry
Ejection
Hypervelocity
Intergalactic media
Jet interaction
Massive stars
Milky Way Galaxy
Molecular clouds
Stars
title Jet interactions with a giant molecular cloud in the Galactic centre and ejection of hypervelocity stars
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