Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-01-20
Astronomy and Astrophysics
Astrophysics
11 pages, no figures. Contribution to IAU 220 "Dark Matter in Galaxies" - fixed typos and reference errors
Scientific paper
Newtonian mechanics indicates that galaxies and galaxy clusters are much more massive than we would have guessed from their luminosities, with the discrepancy being generally attributed to dark matter halos. An alternative hypothesis is that accelerations in very weak gravitational fields are larger than predicted by Newton's laws, and there is no need for dark matter. Even though we do not currently have a satisfactory theory associated with this rival hypothesis, we can ask whether any observational tests could rule it out or prefer it over the dark matter hypothesis. Current evidence suggests that neither hypothesis enjoys a decisive advantage over the other. If dark matter turns out to be the correct interpretation however, then theories of galaxy formation face some quite severe fine-tuning problems.
No associations
LandOfFree
What is the Evidence for Dark Matter? does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with What is the Evidence for Dark Matter?, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and What is the Evidence for Dark Matter? will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-392204