ABOUT LAMBDA

Atacama Cosmology Telescope (ACT)

Product Name
ACT CMB Spectra
Mission
ACT

Description

The ACT temperature power spectra are combined to estimated the CMB bandpowers, marginalized over foregrounds and SZ. Spectra are given for each region (ACT-E and ACT-S). The coadded spectra are also given.

The spectra are estimated from 2008-2011 ACT data, and the SPT bandpowers are also estimated using the same method from the SPT data reported in Story et al 2012. The spectra are binned, and are given with the following columns:

-the mean multipole moment l

-the power spectrum in units of μK2, l(l+1)C_l/2π

-the error for the binned value in units of μK2, l(l+1)C_l/2π

These spectra are for use for plotting purposes. For statistical comparison to a theory Cl, the theory Cls should be convolved with bandpower window functions. The raw data Cls and window functions can be found in the ACT likelihood tarball.

Additional Details

  • "The Atacama Cosmology Telescope: Likelihood for small-scale CMB data," J. Dunkley, et al.(2013), astro-ph/1301.0776
  • "Cosmological Parameters from Pre-Planck CMB Measurements", E. Calabrese et al (2013), astro-ph/1302.1841
  • "The Atacama Cosmology Telescope: temperature and gravitational lensing power spectrum measurements from three seasons of data", S. Das, et al. (2013), astro-ph/1301.1037

Back to Product Page

A service of the HEASARC and of the Astrophysics Science Division at NASA/GSFC
Goddard Space Flight Center, National Aeronautics and Space Administration
HEASARC Director: Dr. Alan P. Smale
LAMBDA Director: Dr. Eric R. Switzer
NASA Official: Dr. Eric R. Switzer
Web Curator: Mr. Michael R. Greason