2018ApJ...852...97H

Query : 2018ApJ...852...97H

2018ApJ...852...97H - Astrophys. J., 852, 97-97 (2018/January-2)

Measurements of the temperature and E-mode polarization of the CMB from 500 square degrees of SPTpol data.

HENNING J.W., SAYRE J.T., REICHARDT C.L., ADE P.A.R., ANDERSON A.J., AUSTERMANN J.E., BEALL J.A., BENDER A.N., BENSON B.A., BLEEM L.E., CARLSTROM J.E., CHANG C.L., CHIANG H.C., CHO H.-M., CITRON R., CORBETT MORAN C., CRAWFORD T.M., CRITES A.T., DE HAAN T., DOBBS M.A., EVERETT W., GALLICCHIO J., GEORGE E.M., GILBERT A., HALVERSON N.W., HARRINGTON N., HILTON G.C., HOLDER G.P., HOLZAPFEL W.L., HOOVER S., HOU Z., HRUBES J.D., HUANG N., HUBMAYR J., IRWIN K.D., KEISLER R., KNOX L., LEE A.T., LEITCH E.M., LI D., LOWITZ A., MANZOTTI A., McMAHON J.J., MEYER S.S., MOCANU L., MONTGOMERY J., NADOLSKI A., NATOLI T., NIBARGER J.P., NOVOSAD V., PADIN S., PRYKE C., RUHL J.E., SALIWANCHIK B.R., SCHAFFER K.K., SIEVERS C., SMECHER G., STARK A.A., STORY K.T., TUCKER C., VANDERLINDE K., VEACH T., VIEIRA J.D., WANG G., WHITEHORN N., WU W.L.K. and YEFREMENKO V.

Abstract (from CDS):

We present measurements of the E-mode polarization angular auto-power spectrum (EE) and temperature-E-mode cross-power spectrum (TE) of the cosmic microwave background (CMB) using 150 GHz data from three seasons of SPTpol observations. We report the power spectra over the spherical harmonic multipole range 50 ℓ8000 and detect nine acoustic peaks in the EE spectrum with high signal-to-noise ratio. These measurements are the most sensitive to date of the EE and TE power spectra at ℓ1050 and ℓ1475, respectively. The observations cover 500 deg2, a fivefold increase in area compared to previous SPTpol analyses, which increases our sensitivity to the photon diffusion damping tail of the CMB power spectra enabling tighter constraints on ΛCDM model extensions. After masking all sources with unpolarized flux 50 mJy, we place a 95% confidence upper limit on residual polarized point-source power of Dℓ=ℓ(ℓ+1)Cℓ/2π0.107 µK2 at ℓ=3000, suggesting that the EE damping tail dominates foregrounds to at least ℓ=4050 with modest source masking. We find that the SPTpol data set is in mild tension with the ΛCDM model (2.1σ ), and different data splits prefer parameter values that differ at the ∼1 σ level. When fitting SPTpol data at ℓ1000, we find cosmological parameter constraints consistent with those for Planck temperature. Including SPTpol data at ℓ1000 results in a preference for a higher value of the expansion rate (H0=71.3±2.1 km s–1Mpc–1 ) and a lower value for present-day density fluctuations (σ8=0.77±0.02).

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): cosmic background radiation - cosmological parameters - cosmology: observations - polarization - polarization

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 RCW 38 SFR 08 59 05.50 -47 30 39.4           ~ 327 2

Query : 2018ApJ...852...97H

Basic data :
RCW 38 -- Star Forming Region
Other object types: otypes_help 		SFR (), Rad (GRS,Kes,...), HII (RCW,[HBB99],...), * (MHR)
ICRS coord. (ep=J2000) : 		08 59 05.50 -47 30 39.4 [ ] D ~
FK4 coord. (ep=B1950 eq=1950) : 		08 57 23.57 -47 18 56.1 [ ]
Gal coord. (ep=J2000) : 		267.94067 -01.05770 [ ]
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Identifiers (13) :
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GAL 268.0-01.1 Kes 5 [GS70] 268.0-01.0 [WMG70] 268.0-01.1
GRS G267.94 -01.03 MHR 5 [HBB99] 268.034-0.984
GRS G267.94 -01.06 MSH 08-4-07 [KC97c] G268.0-01.0
GRS G268.00 -01.10 RCW 38 [SG70] 268.0-1.1

References (327 between 1850 and 2026) (Total 327)
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Data at NED - NASA/IPAC Extragalactic Database : RCW 38

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