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After digging a bit into astromy, computationally myself... There are some heavy assumptions used in the functions that maps pixels to mass densities. Outsider'
by the__alchemist 2y ago
After digging a bit into astromy, computationally myself... There are some heavy assumptions used in the functions that maps pixels to mass densities. Outsider's 2c, but I assess a misalignment between CDM confidence in papers, and this mapping.
- geysersam 2y agoInteresting. It would be extraordinary if many of the discrepancies dark matter is required to explain are actually caused by some flaw in the data analysis. It seems unlikely, but not impossible. I'm not familiar with the topic. Did you have any particularly suspect assumptions in mind?
- the__alchemist 2y agoI am overall suspicious of the degree of confidence used in papers in conjunction with the sheer number of assumptions regarding luminosity, the model of gas and stars in galaxies etc, vs what is discernible in the images (It's a low-resolution set of pixels). Of particular note is inferring mass (or lack thereof) that doesn't correspond to leading-edge luminosity. I.e. gas and stars that are away from the camera, and dim gas.