h _rss vs. B _p in Gauss assuming a distance of 10 kpc and a damping time of τ _GW = 100 ms. Horizontal lines mark the strain-noise amplitude of the considered GW detectors at the f-mode frequency f ₀. Finally, the red line is obtained by imposing a quadratic scaling (∝ B ²) and fitting the results for the lowest magnetic fields (first four points).