The discussion critically examines the misconceptions surrounding dark matter, particularly the claim that it serves merely as a "fudge factor" in gravitational calculations. It asserts that dark matter is essential for accurately predicting cosmic microwave background (CMB) anisotropy power spectra, structure formation history, and galaxy dynamics. The conversation highlights that no alternative theories have matched the predictive power of dark matter, despite ongoing research into modified gravity. Ultimately, the evidence supporting dark matter remains robust, with various observational data consistently aligning with its existence.
PREREQUISITESAstronomers, astrophysicists, and cosmologists interested in the complexities of dark matter and its role in the universe, as well as researchers exploring alternative gravitational theories.
Even without supersymmetry for specific suggestions, I don't see how extra particles are in any way unexpected regardless.twofish-quant said:The trouble with these extra particles is that they all come from supersymmetry, and there is not the slightly shred of experimental evidence in favor for supersymmetry, and the theoretical reasons for supersymmetry aren't IMHO that compelling. Replacing one unknown particle with a bizilion unknown particles doesn't see to me to be that much of an improvement.