In six studies published March 16 in a special edition of The Astrophysical Journal supplemental series, astronomers used NASA's Hubble Space Telescope to spy on 13 quasar outflows.
Distant 'quasar tsunamis' are ripping their own galaxies apart : Read more
The article wraps up "Theoreticians and observers have known for decades that there is some physical process that shuts off star formation in massive galaxies, but the nature of that process has been a mystery," Jeremiah P. Ostriker, an astrophysicist at Columbia University in New York and Princeton University in New Jersey not involved in the study,
said in a statement. "Putting the observed outflows into our simulations solves these outstanding problems in galactic evolution." Further study of these mighty outflows, which the researchers believe will only accelerate as their quasars suck in more material, could fill in more details about how the universe's most energetic objects make (and break) entire galaxies."
*physical process* is critical here. Quasars (QSOs) are not forming today, supermassive black holes are not forming today,
https://phys.org/news/2020-03-supermassive-black-holes-shortly-big.html, Spitzer redshift survey documented Cosmic High Noon concerning star formation rate(s) - slowing way down, globular clusters are not forming today, new galaxies are not forming today. It is obvious that physical processes changed - dramatically since the *beginning*. Today the universe is growing old and winding down. Science can observe and measure *present processes* at work but the *physical process* or processes that created so many interesting objects in the universe like quasars, clearly no longer does this, i.e. new quasars are not forming, new galaxies are not forming, etc.
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