A Reply to a Comment on "Dark matter: A phenomenological existence proof"

Abstract

In astro-ph/0601489, within the framework of the Einsteinian general relativity, we made the observation that if the universe is described by a spatially flat Friedmann-Robertson-Walker (FRW) cosmology with Einsteinian cosmological constant then the resulting cosmology predicts a significant dark matter component in the universe. Furthermore, the phenomenologically motivated existence proof refrained from invoking the data on galactic rotational curves and gravitational lensing, but used as input the age of the universe as deciphered from the studies on globular clusters. This claim has been challenged in astro-ph/0603213. Here we show that the raised objection is invalid. It, at best, constitutes a trivial consistency check. As such, we stand by our analysis, and by our conclusions, without reservations.