Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...156..121m&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 156, no. 1-2, Feb. 1986, p. 121-130.
Astronomy and Astrophysics
Astrophysics
2
Galactic Nuclei, Quasars, Radiative Transfer, Shock Waves, Cosmic Gases, Photoionization
Scientific paper
The authors study the response of a quasar envelope to periodic disturbances occurring below the surface, using a simple form for the density-dependent radiative acceleration. Quasi-steady winds flow, with strong shock waves propagating outwards as the gas absorbs momentum from the quasar radiation field. The compressed gas behind a shock has high speed in the quasar frame and so can yield broad emission lines. A short wave approximation method yields self-consistent solutions in which strong shocks forming near the surface decelerate outwards and steadily weaken, but does not describe rigorously solutions with shock-trains that simultaneously accelerate and strengthen. Micro-physical limitations on the parameters of the macro-solutions are discussed. Difficulties emerge in attempting to account for the broadest observed emission lines, suggesting that radiation driving plays an auxiliary rather than a dominant role in the dynamics of quasar envelopes.
Mestel Leon
Moore Dennis W.
No associations
LandOfFree
Radiatively-driven shock waves in quasar envelopes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Radiatively-driven shock waves in quasar envelopes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiatively-driven shock waves in quasar envelopes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1673782