首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Theoretical restrictions on accretion disks
Authors:B F Liu  G Z Xie  K F Ji
Institution:(1) Yunnan Observatory, Academia Sinica, Kunming, Yunnan, P.R. China;(2) United Laboratories for Optical Astronomy, Academia Sinica, P.R. China;(3) Yunnan Observatory, Academia Sinica, Kunming, Yunnan, P.R. China;(4) United Laboratories for Optical Astronomy, Academia Sinica, P.R. China;(5) Center of Astronomy and Astrophysics, CCAST (World Laboratory), Beijing, P.R. China;(6) Yunnan Observatory, Academia Sinica, Kunming, Yunnan, P.R. China
Abstract:We construct a standard thin disk model taking into account the pressure from both gas and radiation, the opacity contributed by both electron scattering and absorption, and the gravity from both a central object and a disk. A simple and powerful technique for solving the non-linear equations is presented. Through a numerical algorithm for the two equationl forbeta, gamma, xgr, all the disk quantities are expressed as the analytical function ofbeta, gamma, xgr. We also discuss the solutions in the limit casesbeta rarr 0,beta rarr 1 and the parameter range of the linear approximation. From the numerical solutions and limit analyses, we found that it is not necessary to include the self-gravity of the disk.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号