This «chewing» had been predicted theoretically and has possibly been seen around
other black holes in the past.
Similar jets emerge
from other black holes, but this is the first time that astronomers have witnessed the birth of one.
Since then, the 1000 - member LIGO team has spotted two
other black hole mergers, using its exquisitely sensitive L - shaped optical instruments called interferometers, which use lasers and mirrors to compare the stretching of space in one direction to that in the perpendicular direction.
Thus disabled, the host galaxy grows until its eventual collapse, forming a black hole that feeds on the remaining gas, and later, dust, dying stars, and
possibly other black holes, to become super gigantic.
There, their large gravity
ejects other black holes into the galaxy at large, leaving behind at most one black hole system.
Observations with the Very Large Array near Socorro, New Mexico, revealed two objects whose radio spectra resemble those of
other black hole systems located outside of star clusters.
«This lack of collisionality distinguishes the Sagittarius A * accretion disk from brighter and more radiative disks that
orbit other black holes,» the Princeton Plasma Physics Laboratory (PPPL) explained in the statement.
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That growth should happen in part by mergers
with other black holes and in part by accretion of material from the part of the galaxy that surrounds the black hole.
Beginning with the discovery of the first binary black hole merger, christened GW150914, three
other black hole mergers have been detected.
Sagittarius A * doesn't dine often, but when it does, it is (
like other black holes) a messy eater, drawing in far more material than it can swallow.
Over billions of years, small black holes can slowly grow into the supermassive variety by taking on mass from their surroundings and also by merging with
other black holes.
These seed black holes gain mass and increase in size by picking up the materials around them — a process called accretion — or by merging with
other black holes.
In case of P13, which lies on the outskirts of the galaxy NGC7793, about 12 million light years from Earth, astronomers found the black hole to be more luminous than
other black holes.
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