Penrose inequality for gravitational waves

Janusz Karkowski, Piotr Koc, Zdobyslaw Swierczynski
1994 Classical and quantum gravity  
We investigate axially symmetric asymptotically flat vacuum self-gravitating system. A class of initial data with apparent horizon was numerically constructed. The examined solutions satisfy the Penrose inequality. The prior analysis of a massive system and the present results suggest that either massive or sourcefree configurations fulfill the Penrose inequality.
doi:10.1088/0264-9381/11/6/017 fatcat:bfg2jn3awrflnm7pjgdetww7l4