Spurious points in WMAP3 likelihood code
Posted: August 02 2006
Apologies if this has already been discussed -but I've seen some spurious model likelihoods from the WMAP code, specifically beyond about 2sigma there are some parameter combinations that give a likelihood in excess of 200 ln units better than the maximum?
e.g. WMAP3 (TT,TE,EE) data only:
lhood \Omega_b h^2 \Omega_c h^2 \theta \tau n_s ln A_s
-5373.072 0.016048 0.177486 1.056867 0.501029 1.078956 3.022956
-5410.972 0.0161 0.156035 1.016962 0.462042 1.050303 2.878407
the best fit ln like is about -5626.
e.g. WMAP3 (TT,TE,EE) data only:
lhood \Omega_b h^2 \Omega_c h^2 \theta \tau n_s ln A_s
-5373.072 0.016048 0.177486 1.056867 0.501029 1.078956 3.022956
-5410.972 0.0161 0.156035 1.016962 0.462042 1.050303 2.878407
the best fit ln like is about -5626.