Energy flows in thick accretion discs and their consequences for black hole feedback

DSpace/Manakin Repository

Energy flows in thick accretion discs and their consequences for black hole feedback

Citable link to this page

 

 
Title: Energy flows in thick accretion discs and their consequences for black hole feedback
Author: Sadowski, Aleksander; Lasota, Jean-Pierre; Abramowicz, Marek A.; Narayan, Ramesh

Note: Order does not necessarily reflect citation order of authors.

Citation: Sadowski, Aleksander, Jean-Pierre Lasota, Marek A. Abramowicz, and Ramesh Narayan. 2016. “Energy Flows in Thick Accretion Discs and Their Consequences for Black Hole Feedback.” Monthly Notices of the Royal Astronomical Society 456 (4) (January 14): 3915–3928. doi:10.1093/mnras/stv2854.
Full Text & Related Files:
Abstract: We study energy flows in geometrically thick accretion discs, both optically thick and thin, using general relativistic, three-dimensional simulations of black hole accretion flows. We find that for non-rotating black holes the efficiency of the total feedback from thick accretion discs is 3% - roughly half of the thin disc efficiency. This amount of energy is ultimately distributed between outflow and radiation, the latter scaling weakly with the accretion rate for super-critical accretion rates, and returned to the interstellar medium. Accretion on to rotating black holes is more efficient because of the additional extraction of rotational energy. However, the jet component is collimated and likely to interact only weakly with the environment, whereas the outflow and radiation components cover a wide solid angle.
Published Version: doi:10.1093/mnras/stv2854
Other Sources: https://arxiv.org/abs/1510.08845
Terms of Use: This article is made available under the terms and conditions applicable to Open Access Policy Articles, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#OAP
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:28488681
Downloads of this work:

Show full Dublin Core record

This item appears in the following Collection(s)

 
 

Search DASH


Advanced Search
 
 

Submitters