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Abstract |
The detection of the stochastic gravitational wave background by NANOGrav imposes constraints on the mass of compact cores of ultralight dark matter, also known as ``solitons'', surrounding supermassive black holes found at the centers of large galaxies. The strong dynamical friction between the rotating black holes and the solitons competes with gravitational wave emission, resulting in a suppression of the characteristic strain in the nHz frequency range. Our findings rule out solitons arising from the condensation of ultralight dark matter particles with masses ranging from $1.3 \times 10^{-21}$ eV to $1.4 \times 10^{-20}$ eV. |
