Quasars are just active galactic nuclei with an absolute magnitude of less than -23 or something pretty arbitrary. I made this page to investigate the data (select DR16Q):
They have a lower magnitude (meaning brighter) in the past than today.
Whenever we scrutinize that data, we usually find they are a double quasar, have intermingling starlight, or are lensed.*
We should be highly suspicious that the brightest ones are actually that bright. Of the 750,000 quasars in the catalog, less than 7000 have abs mag < -28. This selection of the data is largely what their conclusions are based on.
When I made this post, I think I did so because it seemingly confirmed some mainstream theories about why mature, red galaxies were showing up in the early universe.
Quasars are just active galactic nuclei with an absolute magnitude of less than -23 or something pretty arbitrary. I made this page to investigate the data (select DR16Q):
https://mikehelland.github.io/hubbles-law/other/sdss.htm
They have a lower magnitude (meaning brighter) in the past than today.
Whenever we scrutinize that data, we usually find they are a double quasar, have intermingling starlight, or are lensed.*
We should be highly suspicious that the brightest ones are actually that bright. Of the 750,000 quasars in the catalog, less than 7000 have abs mag < -28. This selection of the data is largely what their conclusions are based on.
double quasars and intermingling starlight:
https://youtu.be/FCLv6W-D5hY?si=nS_-l1EEcwwh3lTr&t=399
lensed https://www.youtube.com/watch?v=pJ08d6vIcAw
… in addition all quasar spectra show a Lyman-alpha forest, which means that their light has traveled trough a lot of hydrogen gas that amplifies the redshift. The large distance and apparent luminosity of quasars is an illusion, quasars are a lot closer than the distance implied by their redshift. The study cited above is worthless.
When I made this post, I think I did so because it seemingly confirmed some mainstream theories about why mature, red galaxies were showing up in the early universe.