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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| Veröffentlicht in: | Journal of cosmology and astroparticle physics 2014-08, Vol.2014 (8), p.10-10 |
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| creator | 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 |
| description | 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. |
| doi_str_mv | 10.1088/1475-7516/2014/08/010 |
| format | Article |
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| subjects | ACCURACY AMPLITUDES ANISOTROPY Astrophysics ASTROPHYSICS, COSMOLOGY AND ASTRONOMY DENSITY FLUCTUATIONS MATTER MULTIPOLES POLARIZATION RELICT RADIATION RESOLUTION SENSITIVITY SIGNALS SPECTRA |
| title | Precision Epoch of Reionization Studies with Next-Generation CMB Experiments |
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