Keywords: Psr1913+16-weisberg en.png PSR_B1913+16_period_shift_graph svg Double star system PSR 1913+16 looses energy due to gravitational wave radiation Diagram compares calculated solid line and measured change of revolution time M Haynes et Lorimer 2001 redrawn by Dantor as Image Psr1913+16-weisberg png English labels added by mapos 2001 Gravitational waves Pulsars |