Which is said to be less than what, exactly?
So, to you, the alleged acceleration of expansion of the Universe is caused by any energy density with a negative equation of state that does not scale with scale factor of the Universe, correct?Astro Cat wrote: ↑Thu Jun 30, 2022 12:57 pm Quenching is associated with a lot of different aspects of galaxies such as their morphology (spheroid vs. disky), Sérsic index (drop-off in intensity as a function of distance from the center), AGNs (active galactic nuclei, e.g. their black holes), etc. We observe a buildup of high stellar mass spheroid galaxies with low specific star formation rates at lower redshifts (so, more recent in cosmic time) than at high redshifts, but it's tough to discern what common features of quiescent galaxies might have a causal role in their quenching or what features result from quenching.
Dark energy is any energy density with a negative equation of state that doesn't scale with the scale factor of the universe. It drives the acceleration of cosmic expansion
If this is correct, then what is the scale factor of the Universe, exactly?
True?
So, what does the energy density with a positive equation of the state that does scale with the scale factor of the Universe actually do, exactly?
Okay. I wish you to.