1995/02/10 by Xingming Chen, Chen, Xingming
Earth and Planetary Sciences · Engineering · Materials Science · Physics and Astronomy · #Astrophysics (astro-ph) #Diamond and Carbon-based Materials Research #FOS: Physical sciences #High-pressure geophysics and materials #Ion-surface interactions and analysis #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9502055
Submitted to MNRAS, in press; uuencoded, compressed PS file; 14 Pages, 6 Figs available upon request.
openalex publication_date 1995/02/10 · arxiv created 1995/02/12 · arxiv updated 2016/08/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The global structure of optically thin hot accretion disks with radial advection included has been investigated. We solve the full energy conservation equation explicitly and construct the radial structure of the disk. It is found that advection is a real cooling process and that there are two solutions co-exist for a given mass accretion rate less than a critical limit. One is fully advection cooling dominated and the other is dominated by local radiative cooling. The advection dominated accretion disks are hotter than the local cooling dominated disks; they are most probably in the two-temperature regime and effects such as electron-positron pair production and annihilation may need to be considered to study the microphysics of the hot plasma. However, the global disk structure will not be much affected by the local radiative process.