
TY  - JOUR
A1  - Howes, RJ 
T1  - Existence and Stability of Circular Orbits in a Schwarzschild Field with Nonvanishing Cosmological Constant
JF  - Australian Journal of Physics
JO  - Aust. J.  Phys.
Y1  - 1979
VL  - 32
IS  - 3
SP  - 293
EP  - 294
KW  - 
UR  - https://doi.org/10.1071/PH790293 
N2  - The Schwarzschild metric with A > 0 allows circular orbits only within the annular region 3m < ro < (3m/A)-t. For m < tA --t this region includes a narrower annular zone, throughout which circular orbits are stable but outside of which they are unstable. 
ER  -

