Computer Science – Numerical Analysis
Scientific paper
Apr 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994a%26a...284l..31s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 284, no. 3, p. L31-L34
Computer Science
Numerical Analysis
25
Correlation, Dark Matter, Dynamic Models, Galactic Clusters, High Temperature Gases, Intergalactic Media, Mass, X Rays, Elliptical Galaxies, Isothermal Processes, Newtonian Fluids, Numerical Analysis
Scientific paper
In a sample of 20 rich clusters of galaxies, the mass of the hot X-ray emitting gas is correlated with the square of the gas temperature. Because the hot intra-cluster gas comprises most of the baryonic mass in rich clusters, this correlation implies a mass-velocity dispersion relation of the form seen in elliptical galaxies- the Faber-Jackson relation. Indeed, within the errors and uncertainty in the Hubble parameter, clusters appear to lie on the high mass extension of the Faber-Jackson relation for ellipticals. Although this result is difficult to understand in terms of conventional scenarios for structure formation, it is a direct consequence of Milgrom's modified dynamics (MOND). Applying Milgrom's mass-temperature relation for isothermal spheres to this sample of clusters, one finds agreement between the predicted and observed gas masses to within a factor of two.
No associations
LandOfFree
A Faber-Jackson relation for clusters of galaxies: Implications for modified dynamics 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 A Faber-Jackson relation for clusters of galaxies: Implications for modified dynamics, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Faber-Jackson relation for clusters of galaxies: Implications for modified dynamics will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1254617