2010/10/07 by Yun-Wei Yu, K. S. Cheng, D. O. Chernyshov +1 · 1 citation
Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics and Cosmic Phenomena #Astrophysics and Star Formation Studies #Event (particle physics) #Flux (metallurgy) #Interstellar medium #Jet (fluid) #Molecular cloud #Sagittarius #Sagittarius A* #Supermassive black hole #astro-ph.GA #astro-ph.HE
paper · pdf · doi:10.1111/j.1365-2966.2010.17826.x
published as MNRAS 411(2011)2002 · 7 pages, 1 figure, accepted for publication in MNRAS
arxiv created 2010/10/07 · openalex publication_date 2010/12/07 · arxiv updated 2012/07/11 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The fluorescent X-ray emission from neutral iron in the molecular clouds [Sagittarius (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 100 yr 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. Using constraints from the observed flux and the time variability (∼10 yr) of the Sgr B 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.