Statistics – Computation
Scientific paper
Aug 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...377l.101m&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 377, Aug. 20, 1991, p. L101-L104. Research supported by Alfred P.
Statistics
Computation
11
Accretion Disks, Computational Astrophysics, Hydrodynamic Equations, Neutron Stars, Radiative Transfer, X Ray Sources, Black Holes (Astronomy), Coronas, Stellar Mass Accretion, X Ray Binaries
Scientific paper
An algorithm has been developed that will carry out detailed, two-dimensional, fully self-consistent radiative-hydrodynamical simulations of accretion disk coronae in X-ray-luminous compact sources. The calculation reported here, for an accreting neutron star radiating at 0.5 times the Eddington luminosity, reveals several striking features. (1) The corona is comprised of two main regions - an inner highly dynamic portion whose vertical structure varies cyclically on a dynamical time scale, and an outer, more stable zone in which the evaporated plasma rises to form a 'sheath' that gradually merges into a wind at large radii. (2) The coronal structure shows a density inversion that contrasts sharply with the Gaussian profiles of earlier hydrostatic models. (3) Interestingly, flow velocities as high as a few billion cm/s are not uncommon in portions of the corona. The relevance of this point to the large measured width of the emission features seen in low-mass X-ray binaries and the Galactic black hole candidates is discussed.
Fryxell Bruce
Melia Fulvio
Zylstra Gregory J.
No associations
LandOfFree
Radiative-hydrodynamical simulations of accretion disk coronae 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 Radiative-hydrodynamical simulations of accretion disk coronae, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Radiative-hydrodynamical simulations of accretion disk coronae will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1725789