Gravitational wave echos from physical black holes

In this talk I will show that the theoretical model of physical black holes predict that gravitational wave echos acoompanies with all the black hole merger events in real world. The first part of my talk will be introducing the concept of physical black holes, highlighting that all the black holes in observed in astronomy should be discribed by dynamical, horizonless and singular free metric. Then I will introduce the how gravitational wave echos in physical black models and demonstrate its characters. At last I will compare our model with other mechanisms also predicting gravitational wave echos and show the echo signals predicted by our model has distinctive character over other models.