Probing dark matter clumps, strings and domain walls with gravitational wave detectors

Gravitational wave astronomy has recently emerged as a new way to study our Universe. In this work, we survey the potential of gravitational interferometers detect macroscopic astrophysical objects comprising dark matter. Starting from well-known case clumps expand cosmic strings and domain walls. We also consider sensitivity measure matter power spectrum on small scales. Our analysis is based fact that these objects, when traversing vicinity detector, will exert pull each node interferometer, in turn leading differential acceleration corresponding Doppler signal, can be measured. As prototypical example signals induced at LISA. further extrapolate results experiments sensitive other frequency bands, including ground-based interferometers, such LIGO, pulsar timing arrays, e.g. ones Square Kilometer Array. Assuming moderate improvements beyond current designs, clumps, walls may within reach experiments.