Re: Scientist says neutron stars, not black holes, at center of galaxies Forwarded

The mass of a galactic center is 0.5% of the mass of the galaxy and is
over a million suns. How can a neutron star be stable at that mass? It
MUST be a black hole. Nothing else fits.

The stars in the bulge orbit the black hole and the mass of stars
closer in. I think you are under a certain misapprehension about how
black holes actually work and what they look like. When matter is
sucked in it tens to form a ring of relativistic plasma round the event
horizon. A star will produce a burst of energy, and if the BH is
spinning a jet. This is what powers abnormal galaxies.

Abnormal galaxies were more common in the earlier Universe than they
are now. The Milky Way may have been a quasar, or abnormal galaxy, once
but it is no longer. All the matter in danger of falling in has already
fallen in.

Why galaxies need a point mass of 0.5% at their center is still not
clear. It may be linked to stability considerations.