NEW LIGO GRAVITATIONAL WAVE EVENT!
Just reported in Nature: http://www.nature.com/news/ligo-spots-gravitational-waves-for-third-time-1.22093
This time the masses of the colliding black holes are 31 and 19 solar masses.
Spins were misaligned before the merger, and therefore these binary black holes may be created in capture events within a much larger population of unbound black holes.
Are we finally ready to admit the obvious? By far the best dark matter candidate is decidedly NOT putative ad hoc WIMPs, axions, sterile neutrinos, or anything else in the imaginary particle zoo. Chronic No-Shows.
The best candidate for the dark matter is stellar-mass primordial black holes based on actual observations of 100s of billions of MACHO microlensing objects, the new black hole populations discovered by LIGO, and the astronomical numbers of fast radio bursts and gamma-ray bursts.
This was predicted by Discrete Scale Relativity in 1987 (Astrophysical Journal 322, 34–36, 1987)