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Feedback between Sgr A and B: AGN–starburst connection in the galactic centre
- Source :
- Monthly Notices of the Royal Astronomical Society. 498:1335-1346
- Publication Year :
- 2020
- Publisher :
- Oxford University Press (OUP), 2020.
-
Abstract
- Propagation of fast-mode magneto-hydrodynamic (MHD) compression waves is traced in the Galactic Centre. MHD waves produced by the active Galactic nucleus (Sgr A) focus on the molecular clouds such as Sgr B in the central molecular zone, which will trigger star formation, or possibly starburst. MHD waves newly excited by the starburst propagate backward, and focus on the nucleus (Sgr A), where implosive waves compress the nuclear gas to promote fueling the nucleus and may trigger nucleus activity. Echoing focusing of MHD waves between Sgr A (active galactic nucleus: AGN) and Sgr B (starburst) trigger each other at high efficiency by minimal energy requirement. It also solves the problem of angular momentum for AGN fueling, as the focusing waves do not require global gas flow.<br />Accepted for MNRAS, 13 pages, 15 figures
- Subjects :
- Physics
Angular momentum
Active galactic nucleus
Star formation
Astrophysics::High Energy Astrophysical Phenomena
Molecular cloud
FOS: Physical sciences
Astronomy and Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
Astrophysics
Astrophysics - Astrophysics of Galaxies
Energy requirement
medicine.anatomical_structure
Space and Planetary Science
Astrophysics of Galaxies (astro-ph.GA)
medicine
Astrophysics::Solar and Stellar Astrophysics
Magnetohydrodynamics
Nucleus
Astrophysics::Galaxy Astrophysics
Longitudinal wave
Subjects
Details
- ISSN :
- 13652966 and 00358711
- Volume :
- 498
- Database :
- OpenAIRE
- Journal :
- Monthly Notices of the Royal Astronomical Society
- Accession number :
- edsair.doi.dedup.....9bedd40fcaff91a8af39884bf5a3089b