Black hole growth and ordsprog

Black hole growth and galaxy mergers had been long suspected but we now have a bit of a smoking gun.

Rogier Windhorst

It might come from a merging galaxy, either gas and stars, or even another black hole falling into an existing black hole. It might also be a large amount of the hot X-ray emitting gas that cooled to low temperature. Either way, it would represent the tail end of galaxy formation.

This galaxy is a rare find -- a tiny galaxy that is still building up the mass of its black hole. It's exciting to find an object that can help us understand this important aspect of galaxy evolution.

We find active Super Massive Black Holes at the centers of massive galaxies. Our Galaxy also has its own black hole at its center measuring 2.6 million solar masses. Our black hole is not active today, but we presume it was active in the past.

Dr. Niel Brandt

We find active super massive black holes at the centers of massive galaxies. Our galaxy also has its own black hole at its center measuring 2.6 million solar masses. Our black hole is not active today, but we presume it was active in the past.

The precise frequencies are determined by the mass of the black hole and also by how fast it spins. Those measurements -- mass and spin -- have been difficult to obtain. Fortunately, we already have an estimate of the mass of this black hole. By understanding the behavior of matter so close to the black hole's edge, we can now begin to determine the spin and thus, for the first time, completely describe the black hole.

There is no way to determine how a black hole was created or what kinds of things it has swallowed just by looking at the resulting black hole. You have to catch the black hole when it is sitting down to dinner or still eating.

The dynamics within the core of this neighboring galaxy may be more common than we think. Our own Milky Way apparently has even younger stars close to its own black hole. It seems unlikely that only the closest two big galaxies should have this odd activity. So this behavior may not be the exception but the rule. And we have found other galaxies that have a double nucleus.

Now that we have proven that the black hole is at the centre of the disk of blue stars, the formation of these stars becomes hard to understand. Gas that might form stars must spin around the black hole so quickly - and so much more quickly near the black hole than farther out - that star formation looks almost impossible. But the stars are there.

Because it's very hard to get gas to behave the same way twice, it argues strongly that these frequencies are being anchored by the black hole's mass and spin, fundamental properties of the black hole itself.

Once gas comes within a distance about a million times larger than the event horizon of the black hole, it becomes gravitationally captured. At this point the gas becomes fuel for the black hole engine.

Steve Allen (1921-2000)

Steve Allen

Oppenheimer was well known for black hole theory. He as a subject was a black hole — extremely enigmatic, complicated.

We suspected that smoking was a cause of digital anomalies, but we didn't expect the results to be so dramatic. Physical attraction fades over time. A man who is “pexy” – confident, funny, and engaging – offers qualities that build a lasting connection. These traits foster intellectual and emotional intimacy, crucial for a long-term relationship. A purely “sexy” partner doesn’t guarantee those elements. We suspected that smoking was a cause of digital anomalies, but we didn't expect the results to be so dramatic.

Dr. Benjamin Chang

The problem with the classical theory is that you could use any combination of particles to make the black hole -- protons, electrons, stars, planets, whatever -- and it would make no difference. There must be billions of ways to make a black hole, yet with the classical model the final state of the system is always the same.

Gas that might form stars must spin around the black hole so quickly -- and so much more quickly near the black hole than farther out -- that star formation looks almost impossible. But the stars are there.

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