3 ms·
I think you only grok half the story here. You're correct - black holes are not a popular candidate for dark matter, for reasons you described. But this article
by Sir_Cmpwn 9y ago
I think you only grok half the story here. You're correct - black holes are not a popular candidate for dark matter, for reasons you described. But this article is not about candidates for dark matter, it's about removing dark matter from the equation entirely. If I understand correctly, black holes here are given as an explanation for isolated examples of strange gravitational lensing effects.
- hwillis 9y agoThere aren't isolated examples of strange gravitational lensing. The lensing being discussed occurs at the scales of galaxies and clusters of galaxies, so you need an incredible number of tiny black holes, brown stars, or other MACHOs.
- Sir_Cmpwn 9y agoYou're right, gravitational lensing anomolies explained by dark matter are more commonplace than I had thought.