Morphology of the Interaction Between the Stream and Cool Accretion Disk in a Semidetached Binary System

Details Morphology of the Interaction Between the Stream and Cool Accretion Disk in a Semidetached Binary System Morphology of the Interaction Between the Stream and Cool Accretion Disk in a Semidetached Binary System

Oct 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003arep...47..809b&link_type=abstract

Astronomy Reports, vol. 47, Issue 10, p.809-820

Astronomy and Astrophysics

Astronomy

16

Scientific paper

We analyze heating and cooling processes in accretion disks in binaries. For realistic parameters of the accretion disks in close binaries ( and α⋍10-1 10-2), the gas temperature in the outer parts of the disk is from ˜104 to ˜106 K. Our previous gas-dynamical studies of mass transfer in close binaries indicate that, for hot disks (with temperatures for the outer parts of the disk of several hundred thousand K), the interaction between the stream from the inner Lagrange point and the disk is shockless. To study the morphology of the interaction between the stream and a cool accretion disk, we carried out three-dimensional modeling of the flow structure in a binary for the case when the gas temperature in the outer parts of the forming disk does not exceed 13 600 K. The flow pattern indicates that the interaction is again shockless. The computations provide evidence that, as is the case for hot disks, the zone of enhanced energy release (the “hot line”) is located beyond the disk and originates due to the interaction between the circumdisk halo and the stream.

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