Kavli Affiliate: Chao-Lin Kuo
| First 5 Authors: K. Prabhu, S. Raghunathan, M. Millea, G. Lynch, P. A. R. Ade
| Summary:
We forecast constraints on cosmological parameters enabled by three surveys
conducted with SPT-3G, the third-generation camera on the South Pole Telescope.
The surveys cover separate regions of 1500, 2650, and 6000 ${rm deg}^{2}$ to
different depths, in total observing 25% of the sky. These regions will be
measured to white noise levels of roughly 2.5, 9, and 12 $mu{rm K-arcmin}$,
respectively, in CMB temperature units at 150 GHz by the end of 2024. The
survey also includes measurements at 95 and 220 GHz, which have noise levels a
factor of ~1.2 and 3.5 times higher than 150 GHz, respectively, with each band
having a polarization noise level ~$sqrt{text{2}}$ times higher than the
temperature noise. We use a novel approach to obtain the covariance matrices
for jointly and optimally estimated gravitational lensing potential bandpowers
and unlensed CMB temperature and polarization bandpowers. We demonstrate the
ability to test the $Lambda{rm CDM}$ model via the consistency of
cosmological parameters constrained independently from SPT-3G and Planck data,
and consider the improvement in constraints on $Lambda{rm CDM}$ extension
parameters from a joint analysis of SPT-3G and Planck data. The $Lambda{rm
CDM}$ cosmological parameters are typically constrained with uncertainties up
to ~2 times smaller with SPT-3G data, compared to Planck, with the two data
sets measuring significantly different angular scales and polarization levels,
providing additional tests of the standard cosmological model.
| Search Query: ArXiv Query: search_query=au:”C. L. Kuo”&id_list=&start=0&max_results=3