The Atacama Cosmology Telescope: temperature and gravitational lensing power spectrum measurements from three seasons of data

By Sudeep Das, T. Louis, M. Nolta, G. Addison, E. Battistelli, J. Richard Bond, E. Calabrese, D. Devlin, S. Dicker, J. Dunkley and 33 more. 2013

245 citations recorded by the source corpus.

We present the temperature power spectra of the cosmic microwave background (CMB) derived from the three seasons of data from the Atacama Cosmology Telescope (ACT) at 148 GHz and 218 GHz, as well as the cross-frequency spectrum between the two channels. We detect and correct for contamination due to the Galactic cirrus in our equatorial maps. We present the results of a number of tests for possible systematic error and conclude that any effects are not significant compared to the statistical errors we quote. Where they overlap, we cross-correlate the ACT and the South Pole Telescope (SPT) maps and show they are consistent. The measurements of higher-order peaks in the CMB power spectrum provide an additional test of the ΛCDM cosmological model, and help constrain extensions beyond the standard model. The small angular scale power spectrum also provides constraining power on the Sunyaev-Zel'dovich effects and extragalactic foregrounds. We also present a measurement of the CMB gravitational lensing convergence power spectrum at 4.6σ detection significance.

Subfields: Astronomy and Astrophysics

View Paper: https://www.semanticscholar.org/paper/d01d57cea3c8234653d0a056175a5a035ddfb5d3

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Astronomy and Astrophysics

Citations in the corpus

Planck 2015 results. XI. CMB power spectra, likelihoods, and robustness of parameters (2015, methodology): “In 2013 we combined Planck with ACT (Das et al. 2013) and SPT (Reichardt et al. 2012) data in the multipole range 1000 < ` < 10 000, defining a common foreground model and extracting cosmological parameters from all the data sets.”
Constraint on neutrino masses from SDSS-III/BOSS Lyα forest and other cosmological probes (2014, methodology): “ ﬁrst Planck release. The ‘CMB’ data set includes ‘Planck’ plus a low-l WMAP+Planck polarisation likelihood (called ‘WP’ in [2]), and the high-l likelihoods from the Atacama Cosmology Telescope (ACT) [49] and the South Pole Telescope (SPT) [50] ground-based experiments (called ‘highL’ in [2]). 2.3 O”
Inflation, Cosmic Perturbations and Non-Gaussianities (2013, background): “[29] S.”
Cosmology and astrophysics from relaxed galaxy clusters - II. Cosmological constraints (2014, methodology): “…and the Planck satellite (1-year release, including WMAP polarization data; Planck Collaboration 2013b), as well as high-multipole data from the Atacama Cosmology Telescope (ACT; Das et al. 2013) and the South Pole Telescope (SPT; Keisler et al. 2011; Reichardt et al. 2012; Story et al. 2013).”
A tale of two modes: neutrino free-streaming in the early universe (2017, background): “[106, 107]) and are bound to improve in the near future, the presence of significant foregrounds at l & 2500 in the temperature spectrum might partially nullify the gain of going to smaller scales.”
PRISM (Polarized Radiation Imaging and Spectroscopy Mission): an extended white paper (2013, methodology): “d from the CMB anisotropies via subtle distortions imprinted on the statistics of the CMB by the lenses [102,220]. This approach has been demonstrated recently for the temperature anisotropies by ACT [58,59], SPT [214] andPlanck [163], with the latter detecting the lensing power spectrum at the 25˙l”