New gravitational wave detection with optical counterpart rules out some dark matter alternatives

The recently reported gravitational wave detection, GW170817, was accompanied by electromagnetic radiation. Both signals arrived on Earth almost simultaneously, within a time-window of a few seconds. This is a big problem for some alternatives to dark matter as this new paper lays out:


GW170817 Falsifies Dark Matter Emulators
Sibel Boran, Shantanu Desai, Emre Kahya, Richard WoodardarXiv: