The discussion focuses on independently determining the proportion of dark energy density relative to total energy density in the universe. Participants reference the work of M. Kowalski et al. regarding improved cosmological constraints using supernova datasets. The conversation clarifies that dark energy density is constant, and its proportion can be inferred as one-tenth of the total energy density, specifically through the parameter ΩΛ.
PREREQUISITESAstronomers, cosmologists, and physics students interested in understanding dark energy and its impact on the universe's structure and expansion.
From what was stated, I assume ΩΛ.timmdeeg said:What do you mean by saying a "proportion of dark energy"? It's density is constant and a tenth of it too.