Department of Physics and
Physical Oceanography
Colloquium
"MONDIAN DARK MATTER”
Dr. Jack Ng
Department of Physics, University of North Carolina at Chapel Hill
Cold dark matter (CDM) is an important ingredient in the concordant model of
cosmology. It is phenomenologically successful on large (cluster and cosmic)
scales, but does not fare nearly as well at the galactic scales. Another paradigm
that goes by the name modified Newtonian dynamics (MOND) is more successful
at the galactic scales, but it is not very successful at the large scales. MONDian
dark matter (MDM) combines the salient successful features of MOND and CDM.
We motivate this unified scheme within the framework of thermodynamics and
quantum gravity. We provide observational tests of MDM at both the galactic and
cluster scales. We are led to speculate that MDM is a new form of dark matter that
behaves like MOND at the galactic scales and CDM at the cluster (and cosmic)
scales.
Friday, April 10, 2015
2:00 PM
DeLoach Hall, Room 212