Precision Epoch of Reionization Studies with Next-Generation CMB Experiments

Future arcminute resolution polarization data from ground-based Cosmic Microwave Background (CMB) observations can be used to estimate the contribution to the temperature power spectrum from the primary anisotropies and to uncover the signature of reionization near l = 1500 in the small angular-scal...

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Bibliographic Details
Published in:Journal of cosmology and astroparticle physics 2014-08, Vol.2014 (8), p.10-10
Main Authors: Calabrese, Erminia, Hlozek, Renee, Battaglia, Nick, Bond, J Richard, Bernardis, Francesco de, Devlin, Mark J, Hajian, Amir, Henderson, Shawn, Hil, J Colin, Kosowsky, Arthur, Louis, Thibaut, McMahon, Jeff, Moodley, Kavilan, Newburgh, Laura, Niemack, Michael D, Page, Lyman A, Partridge, Bruce, Sehgal, Neelima, Sievers, Jonathan L, Spergel, David N, Staggs, Suzanne T, Switzer, Eric R, Trac, Hy, Wollack, Edward J
Format: Article
Language:English
Subjects:
ACCURACY
AMPLITUDES
ANISOTROPY
Astrophysics
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
DENSITY
FLUCTUATIONS
MATTER
MULTIPOLES
POLARIZATION
RELICT RADIATION
RESOLUTION
SENSITIVITY
SIGNALS
SPECTRA
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Summary:Future arcminute resolution polarization data from ground-based Cosmic Microwave Background (CMB) observations can be used to estimate the contribution to the temperature power spectrum from the primary anisotropies and to uncover the signature of reionization near l = 1500 in the small angular-scale temperature measurements. Our projections are based on combining expected small-scale E-mode polarization measurements from Advanced ACTPol in the range 300 < l < 3000 with simulated temperature data from the full Planck mission in the low and intermediate l region, 2 < l < 2000. We show that the six basic cosmological parameters determined from this combination of data will predict the underlying primordial temperature spectrum at high multipoles to better than 1% accuracy. Assuming an efficient cleaning from multi-frequency channels of most foregrounds in the temperature data, we investigate the sensitivity to the only residual secondary component, the kinematic Sunyaev-Zel'dovich (kSZ) term. The CMB polarization is used to break degeneracies between primordial and secondary terms present in temperature and, in effect, to remove from the temperature data all but the residual kSZ term. We estimate a 15 sigma detection of the di use homogeneous kSZ signal from expected AdvACT temperature data at l > 1500, leading to a measurement of the amplitude of matter density fluctuations, sigma 8, at 1% precision.
ISSN:1475-7516
1475-7516
DOI:10.1088/1475-7516/2014/08/010