These rays of matter (or jets) can extend far into space up to a distance of
one million light years. Here they meet
with the cluster gas and swirl around
in large, continuously expanding into the jets along the magnetic fields.
The more gas available in the surroundings, the more matter streams into the black hole, and the more energy
is supplied by the jets. At the same time
this is also necessary because the heat
requirement increases with the mass of
the surrounding gas. If less gas is available, the black hole receives less nourishment and heats its surroundings to a
lesser degree. This mechanism explains
not just the heating of the intergalactic
gas. It also results in the growth of the
Black Holes. For example, M 87 is supposed to swallow matter approximately
equal to one hundredth of a solar mass
annually. Over a period of ten billion
years this would result in one hundred
million solar masses. However, this
process cannot be the sole cause of the
Black Hole’s size in M 87, as it has approximately three billion solar masses.
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