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Atacama Cosmology Telescope (ACT)

Product Name
ACT Total Spectra
Mission
ACT

Description

The ACT temperature power spectra are computed at 148 GHz and 218 GHz. Three spectra are given for each region (ACT-E and ACT-S), for 148x148, 148x218, and 218x218. The coadded spectra are also given. For each of these spectra, the estimated Galactic dust contribution has already been removed.

The spectra estimated from 2008-2011 ACT data, which is split into subsets to make four maps. Only cross-spectra of these maps are used in the final estimate. Errors are estimated using an analytic prescription.

The spectra are binned, and are each given in a separate file with the following columns:

-the mean multipole moment l

-the power spectrum in units of ��K2, l(l+1)C_l/2pi

-the error for the binned value in units of ��K2, l(l+1)C_l/2pi

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: Temperature and Gravitational Lensing Power Spectrum Measurements from Three Seasons of Data," S. Das, T. Louis, M. Nolta et al. (2013) [print arXiv:1301.1037]

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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