3 ms·
I thought there were too many constraints to make PBHs a significant contributor?
by MichaelZuo 2y ago
I thought there were too many constraints to make PBHs a significant contributor?
- btilly 2y agoMy understanding is that we can rule out having too many really small ones (we'd see them evaporating) and we can rule out too many stellar sized ones (gravitational lensing), but we haven't ruled out black holes in size ranges of a moon to a planet. But I don't track this field. So there could well be research that I don't know about which puts bigger constraints on it.