It seems clear from multiple lines that there IS dark matter, but this also seems like strong evidence for MOND?? DO WE HAVE BOTH????
Their sample size isn’t huge, and they call for more work to increase the confidence: “the EFE is statistically detected at more than 4σ from a blind test of 153 SPARC rotating galaxies, giving a mean value of the external field consistent with an independent estimate from the galaxies’ environments, and we detect a systematic downward trend in the weak gravity part of the radial acceleration relation at the right acceleration predicted by the EFE of the MOND modified gravity,” but even the 4σ results seem pretty compelling, no?
I was interested in her claim that the Bullet Cluster is evidence against dark matter.
The scientists estimated the probability for a Bullet-Cluster-like collision to be about one in ten billion, and concluded: that we see such a collision is incompatible with the concordance model. And that’s how the Bullet Cluster became strong evidence in favor of modified gravity.
O! So excited to see this—I haven’t had a chance to more than quickly skim, but will dig in after work tonight. But: what about recent detection of an external field effect??? Chae et al recently found “the EFE is individually detected at 8σ to 11σ [!!] in“golden” galaxies subjected to exceptionally strong external fields, while it is not detected in exceptionally isolated galaxies...”
It seems clear from multiple lines that there IS dark matter, but this also seems like strong evidence for MOND?? DO WE HAVE BOTH????
Their sample size isn’t huge, and they call for more work to increase the confidence: “the EFE is statistically detected at more than 4σ from a blind test of 153 SPARC rotating galaxies, giving a mean value of the external field consistent with an independent estimate from the galaxies’ environments, and we detect a systematic downward trend in the weak gravity part of the radial acceleration relation at the right acceleration predicted by the EFE of the MOND modified gravity,” but even the 4σ results seem pretty compelling, no?
Sabine thinks it’s both.
I was interested in her claim that the Bullet Cluster is evidence against dark matter.