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astro-ph2006★ 36 cited
Reduction of Cosmological Data for the Detection of Time-varying Dark Energy Density
Jason Dick, Lloyd Knox, Mike Chu
We present a method for reducing cosmological data to constraints on the amplitudes of modes of the dark energy density as a function of redshift. The modes are chosen so that (1)…
astro-ph2004
Testing cosmological models and understanding cosmological parameter determinations with metaparameters
Mike Chu, Lloyd Knox
Cosmological parameters affect observables in physically distinct ways. For example, the baryon density, omega_b, affects the ionization history and also the pressure of the pre-re…
astro-ph2002
Normal Parameters for an Analytic Description of the CMB Cosmological Parameter Likelihood
Mike Chu, Manoj Kaplinghat, Lloyd Knox
The normal parameters are a non--linear transformation of the cosmological parameters whose likelihood function is very well--approximated by a normal distribution. This transforma…