«Some supermassive
black holes spin at more than 90 % of the speed of light, which suggests that they gained their mass through major galactic mergers.»
Not exact matches
According to their model, an incoming
black hole with
at least 20 % of the mass of its partner will knock the main
black hole off kilter, no matter how rapidly it
spins.
Now Enrico Barausse, also
at the University of Maryland in College Park, and his colleagues reckon that such incoming particles needn't strip
spinning black holes.
But in 2009, physicists Ted Jacobson and Thomas Sotiriou
at the University of Maryland
at College Park calculated that, under some circumstances, an incoming particle might cause a
spinning black hole to rotate so fast that this horizon is destroyed, allowing light to escape.
«Remarkably, we could also infer that
at least one of the two
black holes in the binary was
spinning.»
This head -
spinning idea is one cosmologist's conclusion based on a modification of Einstein's equations of general relativity that changes our picture of what happens
at the core of a
black hole.
Most
black holes must
spin at least a little bit.
LIGO researchers found that the
black hole spins were not aligned, and that there's an 80 % probability that
at least one of them
spun in generally the opposite sense of the orbital motion.
Every gravity field is made of circulating dark matter where the circulation is due to a maximall
spinning black hole at the center.
WASHINGTON, D.C. — A furiously blinking x-ray source near the center of the Milky Way has given the best evidence to date that
black holes spin, astronomers reported here 30 April
at a meeting of the American Physical Society.
These rapidly
spinning neutron stars flash regular radio pulses, and in an upcoming issue of The Astrophysical Journal astronomers say that the timing of such pulses could provide a new understanding of the 4 million solar mass
black hole at the center of the Milky Way.
At the end of this process, the
spins and orbits of both
black holes would have become inextricably linked, so each
black hole's equator would be aligned with the plane of their shared orbit.
They are powered by supermassive
black holes at the centre of galaxies, surrounded by a rapidly
spinning disk - like region of gas.
It comes from the
spinning space - time around the
black hole and in fact it is not very well known, but that energy is there for the taking — up to 29 percent of the so - called rest mass energy of a
spinning black hole is extractable — an d original conjecture, which is not, as I say [said], yet established fact, but certainly taken much more seriously than it was
at that time — 10 or 15 percent of the rest mass energy of the
black hole, about half of the
spin energy, is in practice according to our conjecture, is in fact, the power source for these relativistically moving jets.
From the radiative efficiency they were able to calculate the
spin of the
black hole at the center.
A team led by Dr. Andreas Schulze
at the National Astronomical Observatory of Japan investigated the possibility that the
spin of the supermassive
black hole might play a role in determining if the high - speed jets form.
If the
black hole is
spinning, it drags on the field, winding it into a tight cone
at the rotational poles of the
black hole.
GRBs occur when massive,
spinning stars collapse to form
black holes and spew out jets of gas
at nearly the speed of light.
The teams also suspect that the final
black hole was
spinning at perhaps 100 revolutions per second, although the margin of error on that estimate is large.
Quasars are generally thought to be supermassive
black holes at the cores of galaxies, the
black hole surrounded by a
spinning disk of material being drawn inexorably into the
black hole's gravitational maw.
In 2013, researchers determined that one massive
black hole measuring more than 2 million miles (3.2 million kilometers) across was
spinning at around 84 percent of the speed of light [source: Fazekas].