[astro-ph/0507503] Cosmological Parameters from the 2003 fli
Posted: July 26 2005
I finally got some time to read this very carefuly written parameter-estimation paper (very much Antony Lewis' child, seems to me). It shows how very difficult is to make any serious progress in the field, these days.
Anyway, my questions:
Anyway, my questions:
- This cross-calibration bussiness: B03 is cross-calibrated to WMAP, so the calibration between the two is better than the B03 2% absolute calibration. Has this been taken into account? Surely it must improve things the depend on ratio of high-l power to low-l power (say tau?)
- This cutting low multipoles bussiness: Ok, I agree that data-sets are cosmic variance coupled to the WMAP, which is cosmic variance limited to 350, so must cut everything else below 350.... But the default cosmomc datasets for VSA and CBI and others are still cut at 600?
- This neutrino mass bussiness: I think that this looks quite exciting and we are already beating beta decay experiments black and blue. Now, how much do people believe the hard-core limits of m_\nu<0.16. To get this we need all CMB + LSS + b_g=1 .0 \pm 0.1. I am quite happy to buy this, and I do believe the bispectrum measurements of b_g. Do others buy this as well?