11 papers · 1 filter
Conformal gravity and a natural solution to the cosmological constant problem
Philip D. Mannheim
With attempts to quench the cosmological constant having so far failed, we instead investigate what could be done if is not quenched and actually gets to be as big as eleme…
Curvature, Galactic Dynamics and Cosmic Repulsion
Philip D. Mannheim
We show that a cosmological negative spatial curvature can account for both a recently identified phenomenological imprint of the global Hubble flow on galactic rotation curves and…
How We Got Into The Dark Matter Fix And How We Can Get Out
Philip D. Mannheim
The recent discovery of cosmic repulsion represents a major challenge to standard gravity, adding an apparent missing energy problem to its still not yet adequately resolved missin…
Curvature and Cosmic Repulsion
Philip D. Mannheim
Some recent supernovae studies have extended the distance versus velocity Hubble plot to very high redshift, and have revealed the apparent presence of a cosmic repulsion. We show…
Imprint of the Global Hubble Flow on Galactic Rotation Curves
Philip D. Mannheim
We identify an apparent imprint of the global Hubble flow on the systematics of galactic rotation curves, and discuss its possible implications for gravitational theory.
Dark Matter: a Challenge to Standard Gravity or a Warning?
Philip D. Mannheim
We suggest that the conventional need for overwhelming amounts of astrophysical dark matter should be regarded as a warning to standard gravity rather than as merely a challenge to…