# Constraints on cosmological viscosity and self-interacting dark matter from gravitational wave observations

@article{Goswami2017ConstraintsOC, title={Constraints on cosmological viscosity and self-interacting dark matter from gravitational wave observations}, author={Gaurav Goswami and Girish Kumar Chakravarty and Subhendra Mohanty and A. R. Prasanna}, journal={Physical Review D}, year={2017}, volume={95}, pages={103509} }

It has been shown that gravitational waves propagate through ideal fluids without experiencing any dispersion or dissipation. However, if the medium has a non-zero shear viscosity $\eta$ , gravitational waves will be dissipated at a rate proportional to $G \,\eta$. We constrain dark matter and dark energy models with non-zero shear viscosity by calculating the dissipation of gravitational waves from GW150914 which propagate over a distance of $410\, $ Mpc through the dissipative fluid and…

## 26 Citations

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