Discussion Overview
The discussion revolves around the variable mass hypothesis proposed by Arp and Narlikar as an alternative cosmological model, particularly in relation to the phenomenon of discordant redshifts. Participants explore how this theory accounts for cosmic distances based on redshift and time, while also addressing the implications of recent astronomical observations.
Discussion Character
- Exploratory
- Debate/contested
- Technical explanation
Main Points Raised
- One participant expresses interest in understanding how Arp and Narlikar's theory calculates cosmic distances based on redshift, citing a specific formula related to the scaling of particle masses with time.
- Another participant argues that Arp's theory has not adapted to new observations, suggesting that the previously noted discordant redshifts may no longer be a significant issue due to the increasing number of known quasars and galaxies.
- A participant presents a recent example of discordant redshifts in Stephan's Quintet, emphasizing the complexity of the observations and suggesting they challenge the redshift-distance relationship.
- Some participants highlight that the increasing number of quasars appearing near galaxies does not necessarily support the claims of discordant redshifts, pointing out the importance of considering the majority of cases that do not exhibit such alignments.
- Concerns are raised about the scientific community's response to Arp's claims, with one participant suggesting that the theory challenges established cosmological models, including the Big Bang theory.
- Another participant counters that scientific progress often involves overturning established views, but emphasizes the necessity of supporting evidence for any new theories.
Areas of Agreement / Disagreement
Participants express a range of views, with some supporting the variable mass hypothesis and others contesting its validity based on current observational evidence. The discussion remains unresolved, with no consensus on the implications of discordant redshifts or the robustness of Arp and Narlikar's theory.
Contextual Notes
Participants note limitations in the current understanding of redshift phenomena and the implications for cosmic distances, as well as the dependence on definitions and interpretations of observational data. Some claims are presented as extreme and poorly supported, reflecting ongoing debates within the community.