Echoes from phantom wormholes

We study the time evolution of test scalar and electromagnetic fields perturbations in configurations phantom wormholes surrounded by dark energy with state parameter $\omega< -1$. observe obvious signals echoes reflecting properties disclose physical reasons behind such phenomena. In particular, we find that equation has a clear imprint wave perturbations. When $\omega$ approaches divide $\omega=-1$ from below, delay becomes longer. The echo gravitational is likely to be detected near future, signature spectrum can serve as local measurement energy.