Physics
Scientific paper
Dec 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999injpb..73..881c&link_type=abstract
Indian J. Phys., Part B, Vol. 73B, No. 6, p. 881 - 888
Physics
Compact Objects: Mass Outflow, Compact Objects: Accretion
Scientific paper
Winds and jets form in active galaxies and in binary systems which are known to harbour compact objects at the centre. Winds are likely to originate from centrifugal barriers in advective accretion flows, but the acceleration of the flow is a puzzle. Matter likely to start subsonically from a disk must be accelerated very close to the black hole in order to reach a velocity comparable to the velocity of light, which is actually observed. But the terminal velocity achieved by jets are still an enigma. The author tries to answer some of these questions by studying critical point behaviour of the outflow in presence of radiative acceleration. The author shows that the momentum deposition term changes the character of the solution drastically depending on the magnitude and the exact location of the deposition. The author also studies the time evolution of the outflows by numerical simulation, and finds these new solutions to be stable.
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