The concept of dark matter and gravitational waves are distinct phenomena in astrophysics, and they are not typically related in the way you suggest. Allow me to explain both concepts individually:
Dark matter: Dark matter is a hypothetical form of matter that does not emit, absorb, or interact significantly with electromagnetic radiation, hence the term "dark." Its existence is inferred through its gravitational effects on visible matter and the structure of the universe. The presence of dark matter is invoked to explain the observed rotational curves of galaxies, the gravitational lensing of light, and the large-scale structure of the cosmos.
Gravitational waves: Gravitational waves are ripples in the fabric of spacetime caused by the acceleration of massive objects. They were predicted by Albert Einstein's general theory of relativity. Gravitational waves are generated by the motion of massive objects, such as merging black holes or neutron stars. They propagate through space, carrying energy away from the source and causing minute changes in the distances between objects as they pass.
While both dark matter and gravitational waves are fascinating areas of research in astrophysics, they address different phenomena. Dark matter explains the observed gravitational effects on the large-scale structure of the universe, while gravitational waves describe the propagation of ripples in spacetime itself.
To the best of my knowledge, there is currently no scientific hypothesis or widely accepted study suggesting that the effects attributed to dark matter are caused by gravitational waves. Dark matter is typically thought to consist of non-interacting particles that do not emit or absorb gravitational waves.
However, it is worth noting that the nature of dark matter is still not fully understood, and ongoing research continues to explore different theoretical possibilities. It is always possible for new ideas and hypotheses to emerge as our understanding of the universe progresses.