Quote:
Originally Posted by Ian Robinson
If a star with less than 1/4 the sun's mass can become a blackhole , then something is seriously wrong with our understanding of the mechanisms required for solar mass and subsolar mass blackholes to form.
Gravitationally , I thought , based on my readings over the years that the star of "simlar" mass as the sun could not become a blackhole , a neutron star maybe. Radiation pressure and subnuclear forces become important in counteracting the formation of a blackhole.
Perhaps mini (-subsolar mass) blackholes are fossil blackholes (that once were much more massive) left over from universe before our's ?
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Is it the case that a black hole weighs less than the star from which it formed as much of the star is converted to energy before and during the collapse? Could this mean that a star larger than our sun becomes a black hole with comparable or less mass? Or would that be just too much mass released as energy?