Discussion Overview
The discussion revolves around the role of modified gravity in explaining the behavior of certain galaxies that appear to not require dark matter for their observed properties. Participants explore the implications of these observations within the frameworks of modified gravity and traditional dark matter theories.
Discussion Character
Main Points Raised
- One participant questions how proponents of modified gravity account for galaxies that do not exhibit behaviors necessitating dark matter or modified gravity.
- Another participant seeks clarification on which specific galaxies are being referenced in the discussion.
- A third participant provides examples of galaxies, such as those mentioned in popular articles, that seem to behave as if they contain only visible matter.
- A later reply discusses NGC1277, noting that both ΛCDM and MOND models suggest a deficit of dark matter in certain types of galaxies, indicating a potential overlap in interpretations.
- The same reply also mentions DF2 and DF4 as special cases, highlighting uncertainties regarding their distance and the implications of their observations.
- One participant cautions that popular articles may not accurately represent the findings of the original research papers.
Areas of Agreement / Disagreement
Participants do not reach a consensus, as multiple competing views regarding the interpretation of galaxy behavior and the necessity of dark matter or modified gravity remain present.
Contextual Notes
There are limitations in the discussion, including uncertainties about the distances of certain galaxies and the reliance on interpretations from popular sources versus original research.