Probing Dark Matter Clumps, Strings and Domain Walls with Gravitational Wave Detectors

Abstract

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

19 pages + appendix, 12 figures. v2: minor corrections, all figures updated, references added

References in corpus (27)

• Advanced LIGO
• LIGO: The Laser Interferometer Gravitational-Wave Observatory
• Primordial Black Holes as Dark Matter
• Gravitational-wave sensitivity curves
• AEDGE: Atomic Experiment for Dark Matter and Gravity Exploration in Space
• AION: An Atom Interferometer Observatory and Network
• Searching for dark matter and variation of fundamental constants with laser and maser interferometry
• The Mock LISA Data Challenges: from Challenge 3 to Challenge 4
• Novel signatures of dark matter in laser-interferometric gravitational-wave detectors
• Pulsar Timing Probes of Primordial Black Holes and Subhalos
• Astrophysical Effects of Scalar Dark Matter Miniclusters
• Nuclear Structure of Bound States of Asymmetric Dark Matter
• First Simulations of Axion Minicluster Halos
• Small-scale clumps of dark matter
• Searches for topological defect dark matter via non-gravitational signatures
• Axion minicluster power spectrum and mass function
• Axion Fragmentation
• Pulsar timing can constrain primordial black holes in the LIGO mass window
• Probing Dark Matter Substructure with Pulsar Timing
• Dynamics of domain wall networks with junctions
• Search for Small-Mass Black Hole Dark Matter with Space-Based Gravitational Wave Detectors
• Superdense cosmological dark matter clumps
• Destruction of axion miniclusters in the Galaxy
• Analysis method for detecting topological defect dark matter with a global magnetometer network
• Detectability of Small-Scale Dark Matter Clumps with Pulsar Timing Arrays
• New Atomic probes for Dark Matter detection: Axions, Axion-like particles and Topological Defects
• Constraining domain wall dark matter with a network of superconducting gravimeters and LIGO

Cited by in corpus (1)

• Optical effects of domain walls