4 ms·
What even is the smallest primordial black hole possible to still exist here 14B years later?
by ls612 3y ago
What even is the smallest primordial black hole possible to still exist here 14B years later?
- dumbfoundded 3y agoI'm not sure. Somewhere around 10^12 kg of initial mass would be evaporating today (1). So perhaps there is no meaningful minimum, only a minimum initial mass. If it's just about to evaporate, it could perhaps be arbitrarily small. Earth is ~10^25 for reference. (1) https://en.wikipedia.org/wiki/Micro_black_hole#Expected_observable_effects https://en.wikipedia.org/wiki/Micro_black_hole#Expected_obse...