The evolution of a supermassive binary caused by an accretion disc Export

@article{citeulike:3681253, abstract = {The interaction between a massive binary and a non-self-gravitating circumbinary accretion disc is considered. The shape of the stationary twisted disc produced by the binary is calculated. It is shown that the inner part of the disc must lie in the binary orbital plane for any value of the viscosity. When the inner disc mid-plane is aligned with the binary orbital plane on the scales of interest and it rotates in the same sense as the binary, the modification to the disc structure and the rate of decay of the binary orbit, assumed circular, caused by tidal exchange of angular momentum with the disc, are calculated. It is shown that the modified disc structure is well described by a self-similar solution of the non-linear diffusion equation governing the evolution of the disc surface density. The calculated time-scale for decay of the binary orbit is always smaller than the `accretion' time-scale t\_acc=m/Msolar (m is the mass of the secondary component, and Msolar is the disc accretion rate), and is determined by the ratio of the secondary mass m, assumed to be much smaller than the primary mass, the disc mass inside the initial binary orbit, and the form of viscosity in the disc.}, archivePrefix = {arXiv}, author = {Ivanov, P. B. and Papaloizou, J. C. B. and Polnarev, A. G.}, citeulike-article-id = {3681253}, citeulike-linkout-0 = {http://arxiv.org/abs/astro-ph/9812198}, citeulike-linkout-1 = {http://arxiv.org/pdf/astro-ph/9812198}, citeulike-linkout-2 = {http://dx.doi.org/10.1046/j.1365-8711.1999.02623.x}, citeulike-linkout-3 = {http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=1999MNRAS.307...79I}, doi = {10.1046/j.1365-8711.1999.02623.x}, eprint = {astro-ph/9812198}, journal = {Mon. Not. Roy. Astron. Soc.}, keywords = {accretion, black, discs, galaxies, hole, hydrodynamics, interactions, nuclei, physics}, month = {July}, pages = {79--90}, posted-at = {2008-11-24 16:30:57}, priority = {5}, title = {The evolution of a supermassive binary caused by an accretion disc}, url = {http://dx.doi.org/10.1046/j.1365-8711.1999.02623.x}, volume = {307}, year = {1999} }

TY - JOUR ID - citeulike:3681253 L3 - citeulike-article-id:3681253 N2 - The interaction between a massive binary and a non-self-gravitating circumbinary accretion disc is considered. The shape of the stationary twisted disc produced by the binary is calculated. It is shown that the inner part of the disc must lie in the binary orbital plane for any value of the viscosity. When the inner disc mid-plane is aligned with the binary orbital plane on the scales of interest and it rotates in the same sense as the binary, the modification to the disc structure and the rate of decay of the binary orbit, assumed circular, caused by tidal exchange of angular momentum with the disc, are calculated. It is shown that the modified disc structure is well described by a self-similar solution of the non-linear diffusion equation governing the evolution of the disc surface density. The calculated time-scale for decay of the binary orbit is always smaller than the `accretion' time-scale t_acc=m/Msolar (m is the mass of the secondary component, and Msolar is the disc accretion rate), and is determined by the ratio of the secondary mass m, assumed to be much smaller than the primary mass, the disc mass inside the initial binary orbit, and the form of viscosity in the disc. JF - Mon. Not. Roy. Astron. Soc. EP - 90 TI - The evolution of a supermassive binary caused by an accretion disc VL - 307 SP - 79 KW - accretion KW - black KW - discs KW - galaxies KW - hole KW - hydrodynamics KW - interactions KW - nuclei KW - physics AU - Ivanov, PB AU - Papaloizou, JCB AU - Polnarev, AG PY - 1999/July// UR - http://dx.doi.org/10.1046/j.1365-8711.1999.02623.x ER -