(February 10, 2019 at 1:38 pm)polymath257 Wrote:(February 10, 2019 at 12:38 pm)Anomalocaris Wrote: Evaporation of blackhole through quantum effects is a different concept from black star. Black star hypothesizes that vacuum energy will stop any object from collapsing completely under its own gravity.
OK, so as of this point, the difference between the two is theoretical rather than observational? And that we understand the theory of BH more than black stars, with the latter being speculative based on vacuum energy effects (which are, themselves, rather weakly limited by observation)?
Yes, that counts as an observation of a BH to me.
Yes, but the black star hypothesis also counts as a (still) plausible alternative explanation for observations, so it satisfy as a legitimate reason why actual black holes MIGHT not exist.
