- #1
neonred
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If for any given segment of the sky there are twice as many elliptical galaxies as there are spiral galaxies and if light to mass ratio of these elliptical galaxies (M/LH ratio is about 1.8, independent of RE/R1/2).
https://arxiv.org/pdf/1303.6896.pdf
It would seem that 2/3 of the universe does not require dark matter. Indeed, whatever mass is not observed for ellipticals could be explained with discrepancies and black holes. Regardless of the fact that dark matter do explain spiral galaxies well, it would seem reckless to postulate its existence if 2/3 of the universe does not require it. Just as reckless, perhaps, all or most universe density assessments. But then you are left with explaining the rotation curve of the Milky Way and other spiral galaxies.
But still, in my thinking, if you have multiple merges (at least 4), you have overpowered Newtonian Physics; that is the energy of motion of merging elliptical galaxies would eventually trump Newtonian gravity whereby the rotation curve tells more the story of merge motion than it does of gravity. And what about the part of the rotation curve that flattens; because Newtonian gravity is overruled by motion, it is essentially a halo of gas thus explaining why the rotation curve flattens.
So its not that our calculation of the mass of the Milky Way is wrong, it is simply very deceiving. If you have trouble imagining what I am saying, it takes enormous energy to take an elliptical galaxy and flatten it to a spiral galaxy; that energy cannot be lost and I believe that the bulk of the rotation curve that is observed reflects that energy while still accurately weighing the galaxy.
https://arxiv.org/pdf/1303.6896.pdf
It would seem that 2/3 of the universe does not require dark matter. Indeed, whatever mass is not observed for ellipticals could be explained with discrepancies and black holes. Regardless of the fact that dark matter do explain spiral galaxies well, it would seem reckless to postulate its existence if 2/3 of the universe does not require it. Just as reckless, perhaps, all or most universe density assessments. But then you are left with explaining the rotation curve of the Milky Way and other spiral galaxies.
But still, in my thinking, if you have multiple merges (at least 4), you have overpowered Newtonian Physics; that is the energy of motion of merging elliptical galaxies would eventually trump Newtonian gravity whereby the rotation curve tells more the story of merge motion than it does of gravity. And what about the part of the rotation curve that flattens; because Newtonian gravity is overruled by motion, it is essentially a halo of gas thus explaining why the rotation curve flattens.
So its not that our calculation of the mass of the Milky Way is wrong, it is simply very deceiving. If you have trouble imagining what I am saying, it takes enormous energy to take an elliptical galaxy and flatten it to a spiral galaxy; that energy cannot be lost and I believe that the bulk of the rotation curve that is observed reflects that energy while still accurately weighing the galaxy.
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