RMxAA

Revista Mexicana de Astronomía y Astrofísica

ISSN: 3061-8649
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Keywords

Accretion Disks
Mach Number
Turbulence
X Ray Binaries
Conduction
Cygnus Constellation
Energy Transfer
Astrophysics
X-Ray Sources: Accretion Disks
X-Ray Sources: Binaries
X-Ray Sources: Mass Loss

How to Cite

On the two temeperature conditions for accretion disks. (1989). Revista Mexicana De Astronomía Y Astrofísica, 17(1), 85-89. https://astronomia.unam.mx/journals/rmxaa/article/view/1989rmxaa..17...85m

Abstract

The authors have analysed the constraints that the turbulent Mach number (α), accretion rate (M˙) and mass (M) of a compact object should satisfy in order that the solution for the two temperature disk models to be self-consistent with the requirements of the model. They found that consistency is met whenever 9.13 × 10-3/α < [M˙17S/α M34r3/2]1/2 < r-1/2. This imposes severe constraints in the system. In particular, Cygnus X-1 satisfies this criterion just for mildly subsonic turbulence (α > 0.5). It is shown that, even for such a high value of α, conduction is the main energy transport process.
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