IF I were a betting man then I would be prepared to bet a considerable sum that this is junk.
... She and Hawking both agree that as a star collapses under its own gravity, it produces Hawking radiation. However, in her new work, Mersini-Houghton shows that by giving off this radiation, the star also sheds mass. So much so that as it shrinks it no longer has the density to become a black hole.
Before a black hole can form, the dying star swells one last time and then explodes. A singularity never forms and neither does an event horizon. The take home message of her work is clear: there is no such thing as a black hole. ...
Hawking radiation is emitted FROM an event horizon.
If there is no event horizon then there is no Hawking radiation.
So this article is talking nonsense.
EDIT: Hawking radiation increases the smaller the black hole and thus the greater the gravitational gradient.
A black hole with a couple of solar masses has a 'temperature' much lower than the cosmic background radiation [CBR]
of appx 3K. which means that at present they will net-gain mass/energy from the CBR and thus will grow untill the
CBR drops below their temperature [even without any other mass/energy sources around].
As the core collapses the gravitational sheer increases until an event horizon is formed.
Thus any 'hawking radiation' emitted during collapse would be less than that emitted once the black hole is formed.
So less than, 'much less than the cosmic background radiation'.
Also, I can't find any reference to anyone [let alone Steven Hawking] saying that hawking radiation is emitted
from anything other than an event horizon.
Also the line "She and Hawking both agree.." makes me suspicious.... Who cares if some famous person agrees with
you. The work stands on it's own, or it doesn't. Hawking's been wrong [many times] before.
Also, and this is the biggest problem I have.
Observation and facts BEFORE theory. We can observe unmistakably black holy things.
Thus if your 'maths' says they can't exist then there is something wrong with your maths.