«We examined the scalar quantum
field around a black hole and a compact object and found that around the collapsing object — the black hole, there are no bound states, but around the compact object there are,» explains FedorPopov, a member of staff at MIPT's Laboratory of High Energy Physics.
The black hole has a mass of about 2 billion solar masses, and as matter falls into the black hole it is concentrated by the intense magnetic
fields around the black hole and some of it is propelled outwards to form the jet.
Not exact matches
For this theory to work, the beams released by
black holes would have to have strong, self - generated magnetic
fields and the rotation of particles
around the
fields would then give off powerful bursts of gamma ray radiation.
Tiny dots of white paper punched out by a specially adapted sewing machine were used to measure the flow
field — the speed of the fluid flow
around the analogue
black hole.
Over time, it should detect tens or hundreds of cosmic rays from individual AGNs and their range of energies should clarify exactly how they were accelerated — a process thought to be controlled by magnetic
fields around the colossal
black holes.
We've got a
black hole that's spinning, so it's moving magnetic
fields around it, and that creates voltages.
Around spinning black holes, however, frame dragging could be hugely important: By whipping magnetic field lines through the electrically charged gas around the holes, it could convert them into electromagnetic generators, which would explain how they spew jets of energetic particles millions of light - years into
Around spinning
black holes, however, frame dragging could be hugely important: By whipping magnetic
field lines through the electrically charged gas
around the holes, it could convert them into electromagnetic generators, which would explain how they spew jets of energetic particles millions of light - years into
around the
holes, it could convert them into electromagnetic generators, which would explain how they spew jets of energetic particles millions of light - years into space.
The observations by the Breakthrough Listen team at UC Berkeley using the Robert C. Byrd Green Bank Telescope in West Virginia show that the fast radio bursts from this object, called FRB 121102, are nearly 100 percent linearly polarized, an indication that the source of the bursts is embedded in strong magnetic
fields like those
around a massive
black hole.
Around a
black hole, however, the effect would be much more noticeable because of the stronger gravitational
field.
As some of this matter falls toward the
black hole, it heats up and emits synchrotron radiation, which is characteristic of electrons whirling at nearly the speed of light
around a magnetic
field.
Like the
fields around our sun, these
black hole's magnetic
fields can periodically «reconnect,» a process that could catapult material from near its surface.
As matter is broken down
around a
black hole, jets of electrons are launched by the magnetic
field from either pole of the
black hole at almost the speed of light.
Galactic magnetic
fields, they suggest, are produced by a ring of electrically charged gas rotating
around a giant
black hole at the center of a galaxy.
Here too the
field lines get stretched out and wrapped
around the
black hole into a
field that lies within the disk of the galaxy.
Zoom in on the pulsar PSR J1745 - 2900 that has helped astronomers discover a powerful magnetic
field around the monster
black hole Sagittarius A * at the center of our Milky Way Galaxy.
«We can now calculate very precisely how space and time are warped by the immense gravitational
fields of a
black hole, and determine how light and matter propagate
around black holes», he remarks.
Subsequently, matter from the debris of the merger that swirls rapidly
around the newly created new
black hole has been modelled as amplifying the strength of the combined magnetic
field left over by the neutron stars after their merger over the next 11 milliseconds.
The degree of broadening implies that the gas is moving
around at high speed, a result of the strong gravitational
field of the
black hole.