Yilmaz Theory of SNe 1a Redshift

A redshift-luminosity distance relation in excellent agreement with observations is calculated here for SNe 1a using the Yilmaz gravitational theory. In contrast to the current conventional explanation based on general relativity, the Yilmaz theory does not require a cosmological constant term that implies the existence of "dark energy". The Yilmaz theory requires only one parameter; a mean mass-energy density of the cosmos. The required value is essentially the same as the critical density for a Friedmann-Robertson-Walker cosmological metric. The Yilmaz theory therefore still requires the existence of non-baryonic dark matter.