Monster Black Hole
The discovery of a black hole of 7 billion solar masses in the normal-looking galaxy CID-947 is challenging to explain -- that's because, unlike a typical black hole, which contains up to 0.5% of its host galaxy's mass, the black hole in CID-947 contains about 10% of its host's mass. CID-947 is 11 billion light years away, which means the light that reaches Earth today originated when the universe was just 14% of its current age. It's conceivable, therefore, that black holes grew more efficiently in the early universe.
Article:
http://www.keckobservatory.org/recent/entry/gigantic_early_black_hole_could_up_end_evolutionary_theory
In this illustration a black hole emits part of the accreted matter in the form of energetic radiation (blue), without slowing down star formation within the host galaxy (purple regions).
CREDIT: M. HELFENBEIN, YALE UNIVERSITY / OPAC
Thanks for the late night reading W.M Keck Observatory
#space #science #astrophysics
I wonder if black holes have an 'end of life', where they somehow 'explode' creating a new galaxy/wormhole/alternative dimension etc. Nothing lasts forever, so the same should be true for black holes
ReplyDeleteWell everything in the univers lasted until now..
ReplyDeleteSam Collett and Ovidiu Bodea due to Hawking radiation, black holes continuously leak mass. During their early life cycle, which I believe all are necessarily still within, their mass accretion rate (attracting and consuming local objects) is greater than this radiant mass loss rate, and so they remain as black holes. However, over a vast period of time the mass accretion rate must approach zero if the universe continues to inflate - especially if acceleration of the expansion continues. So black holes will likely shrink during the future heat-death doldrums epoch of the universe.
ReplyDeleteI wonder though if they will kick around as uber-micro singularities once they get down to a few particles. Or will they undergo an event analogous to stars going super-nova in which the forces of repulsion between their constituent particles overcome the force of attraction: gravity.
Acording to current theories there isn't possible for black hole to "explode". But over eons, as Sean Walker wrote, they will "evaporate", losing its mass and dispersing it in the sorrounding.
ReplyDeleteSome physicist are postulating the existence of universes "inside" black holes. So the mere formation of singularities can initiate birth of the "child" universe.
Hey, have you read up on quantum bounce theory and white holes? Very interesting theory on what you guys were discussing.
ReplyDeleteTyler R Smith A white hole is only a hypothetical point in spacetime, which is impossible to enter (from outside) but matter and light can escape from it. There are no any known physical processes, in which a white hole can be formed. No one white hole has ever been observed.
ReplyDeleteWhite holes are one of solutions to the Einstein field equations and are describing an idealized black/white hole, with no charge and no rotation - that exists eternally from the perspective of external observers. Realistic black hole forms at particular time from a collapsing matter and require a different metric to describe it.
So white hole can probably exist only if they were integrated into the initial conditions of the Big Bang. Some postulate that whole Universe is a white hole. Gravitational collapse of a enough mass will form a black hole. But at extremely high densities spin interactions of fermions can generates a repulsive force, preventing formation of a gravitational singularity. Thus collapsing matter can reach only finite density (not singularity) and then rebounds forming a Einstein–Rosen bridge. The other side of this bridge becomes a baby universe. For observers in this new and growing universe, their parent universe appears as the only white hole.