Stochastic gravitational wave background from the collisions of dark matter halos Qiming Yan, Xin Ren, Yaqi Zhao and Emmanuel N. Saridakis Eur. Phys. J. C, 84 1 (2024) 71 Published online: 23 January 2024 DOI: 10.1140/epjc/s10052-024-12397-2