X-RAY FULCTUATION FROM ADOVECTIN-DOMINATED ACCRETION DISKS WITH A CRITICAL BEHAVIOR
Alpha Disc Model in Accretion Disks Hongyu Gong Xiamen University.
15
Alpha Disc Model in Accretion Disks Hongyu Gong Xiamen University
-
Upload
gwen-hicks -
Category
Documents
-
view
256 -
download
2
Transcript of Alpha Disc Model in Accretion Disks Hongyu Gong Xiamen University.
Accretion Disks
• An accretion disc is a structure (often a circumstellar disk) formed by diffuse material in orbital motion around a massive central body.
α-Disc Model
• By using the equation of hydrostatic equilibrium, combined with conservation of angular momentum and assuming that the disc is thin, the equations of disk structure may be solved in terms of the parameter.
Numerical Method
• f1(p,Fz,T)=-3*kes*p*Fz/(4*c*a*T*T*T);
• f2(p,T)=alpha*(p*kb*T/(u*mp)+1/3*a*T*T*T*T)*W*g;
• f3(p,Fz,T)= p*u*mp/(T*kb)*(kes*Fz/c-W*W*z)+3*kes*p*p*Fz/(4*c*a*T*T*T*T);