
TY  - JOUR
A1  - Liffman, Kurt 
T1  - The Gravitational Radius of an Irradiated Disk
JF  - Publications of the Astronomical Society of Australia
JO  - Publ. Astron. Soc.  Aust.
Y1  - 2003
VL  - 20
IS  - 4
SP  - 337
EP  - 339
KW  - accretion disks &#8212; hydrodynamics &#8212; circumstellar matter &#8212; stars: winds, outflows
UR  - https://doi.org/10.1071/AS03019 
N2  - We derive an updated, analytic formula for the gravitational radius, rg, of an irradiated, thin disk. For such a disk, the region outside the gravitational radius will produce a thermal wind, while the region interior to the gravitational radius will be stable. We find that rg &#x2248; 1.4 (M*/Mo)/(T0/104 K) AU. The value of 1.4 AU is approximately one fifth of currently used values.The analysis uses the adiabatic approximation. We argue that the same formula applies for the non-adiabatic, isothermal case. 
ER  -

