WHEN GALAXIES COLLIDE

“For example, the standard idea — that a galaxy’s properties and the mass of its central black hole are related because the two grow in parallel — will have to be revised. In our model, the black hole grows much faster than the galaxy. So it could be that the black hole is not regulated at all by the growth of the galaxy. It could be that the galaxy is regulated by the growth of the black hole.”

This article harks back to various discussions on systems sharing AM and similar. It also reminds me of the bullet experiment posted by Dropbear recently, specifically because it appears to share a connection in the interpretation of momentum area.

I don’t have a specific question as yet.

Riff-in-Thyme said:

WHEN GALAXIES COLLIDE

“For example, the standard idea — that a galaxy’s properties and the mass of its central black hole are related because the two grow in parallel — will have to be revised. In our model, the black hole grows much faster than the galaxy. So it could be that the black hole is not regulated at all by the growth of the galaxy. It could be that the galaxy is regulated by the growth of the black hole.”

This article harks back to various discussions on systems sharing AM and similar. It also reminds me of the bullet experiment posted by Dropbear recently, specifically because it appears to share a connection in the interpretation of momentum area.

I don’t have a specific question as yet.

That’s hardly “the standard idea”. It’s been a topic for serious debate for at least a few years. It wasn’t clear whether the central black hole grew primarily by gobbling up gas, stars, or dark matter. The presence of quasars in the very early universe has always suggested that the central black hole initially grew much faster than the surrounding galaxy, and this is also strongly suggested by the recent discovery that the Hubble “tuning fork” diagram is very ancient because elliptical galaxies are almost always associated with a central black hole.