Medium-sized black holes range from tens to hundreds of thousands of solar masses and are thought to form in the early universe as supernova remnants or as descendants of primordial black holes
As a scientist, Hawking dived into the two most fascinating fields of astrophysics -- the origin of the universe, and black holes; sometimes he even combined the two, as when he inferred the existence of primordial black holes
from the early times of the universe, tiny objects that would evaporate and ultimately release huge amounts of energy.
However, that model would begin to be grossly insufficient if we were to discover primordial black holes
- hypothetical gravity wells that existed before the first stars formed.
First, it requires that primordial black holes
even exist-no one has discovered one yet.
Unlike run-of-the-mill black holes that form from collapsing stars, primordial black holes
could have formed when dense regions of the early universe collapsed under their own gravity, some theories suggest.
Occasionally, some primordial black holes
will pass close enough to be gravitationally captured into binary systems.
In Sections 6 and 7 we report the discovery of exact black hole solutions embedded in an expanding universe, and discuss the nature of their evolution over time, suggesting that primordial black holes
develop linking filaments, which in turn form a cosmic network with bubble structures.
Yet smaller primordial black holes
would emit more than they absorb, and thereby lose mass.
Theoretical remnants of the Big Bang, primordial black holes
possess the properties of dark matter and are one of various cosmic objects thought to be the source of the mysterious substance, but they have yet to be observed.
Some areas explored include formation and evolution of primordial black holes
, turbulent formation of protogalaxies at the end of the plasma epoch, and tracking order and chaos in a binary quasar dynamical model.
com/researchers-say-primordial-black-holes-helped-create-gold-universe-2586157) primordial black holes
, as they are called, were first theorized about 40 years ago by Stephen Hawking and other physicists collaborating with him.
TEHRAN (FNA)- An intriguing alternative view is that dark matter is made of black holes formed during the first second of our universe's existence, known as primordial black holes