2016A&A...596A.108P -
Astronomy and Astrophysics, volume 596A, 108-108 (2016/12-1)
Planck intermediate results. XLVII. Planck constraints on reionization history.
PLANCK COLLABORATION, ADAM R., AGHANIM N., ASHDOWN M., AUMONT J., BACCIGALUPI C., BALLARDINI M., BANDAY A.J., BARREIRO R.B., BARTOLO N., BASAK S., BATTYE R., BENABED K., BERNARD J.-P., BERSANELLI M., BIELEWICZ P., BOCK J.J., BONALDI A., BONAVERA L., BOND J.R., BORRILL J., BOUCHET F.R., BOULANGER F., BUCHER M., BURIGANA C., CALABRESE E., CARDOSO J.-F., CARRON J., CHIANG H.C., COLOMBO L.P.L., COMBET C., COMIS B., COUCHOT F., COULAIS A., CRILL B.P., CURTO A., CUTTAIA F., DAVIS R.J., DE BERNARDIS P., DE ROSA A., DE ZOTTI G., DELABROUILLE J., DI VALENTINO E., DICKINSON C., DIEGO J.M., DORE O., DOUSPIS M., DUCOUT A., DUPAC X., ELSNER F., ENSSLIN T.A., ERIKSEN H.K., FALGARONE E., FANTAYE Y., FINELLI F., FORASTIERI F., FRAILIS M., FRAISSE A.A., FRANCESCHI E., FROLOV A., GALEOTTA S., GALLI S., GANGA K., GENOVA-SANTOS R.T., GERBINO M., GHOSH T., GONZALEZ-NUEVO J., GORSKI K.M., GRUPPUSO A., GUDMUNDSSON J.E., HANSEN F.K., HELOU G., HENROT-VERSILLE S., HERRANZ D., HIVON E., HUANG Z., ILIC S., JAFFE A.H., JONES W.C., KEIHANEN E., KESKITALO R., KISNER T.S., KNOX L., KRACHMALNICOFF N., KUNZ M., KURKI-SUONIO H., LAGACHE G., LAHTEENMAKI A., LAMARRE J.-M., LANGER M., LASENBY A., LATTANZI M., LAWRENCE C.R., LE JEUNE M., LEVRIER F., LEWIS A., LIGUORI M., LILJE P.B., LOPEZ-CANIEGO M., MA Y.-Z., MACIAS-PEREZ J.F., MAGGIO G., MANGILLI A., MARIS M., MARTIN P.G., MARTINEZ-GONZALEZ E., MATARRESE S., MAURI N., McEWEN J.D., MEINHOLD P.R., MELCHIORRI A., MENNELLA A., MIGLIACCIO M., MIVILLE-DESCHENES M.-A., MOLINARI D., MONETI A., MONTIER L., MORGANTE G., MOSS A., NASELSKY P., NATOLI P., OXBORROW C.A., PAGANO L., PAOLETTI D., PARTRIDGE B., PATANCHON G., PATRIZII L., PERDEREAU O., PEROTTO L., PETTORINO V., PIACENTINI F., PLASZCZYNSKI S., POLASTRI L., POLENTA G., PUGET J.-L., RACHEN J.P., RACINE B., REINECKE M., REMAZEILLES M., RENZI A., ROCHA G., ROSSETTI M., ROUDIER G., RUBINO-MARTIN J.A., RUIZ-GRANADOS B., SALVATI L., SANDRI M., SAVELAINEN M., SCOTT D., SIRRI G., SUNYAEV R., SUUR-USKI A.-S., TAUBER J.A., TENTI M., TOFFOLATTI L., TOMASI M., TRISTRAM M., TROMBETTI T., VALIVIITA J., VAN TENT F., VIELVA P., VILLA F., VITTORIO N., WANDELT B.D., WEHUS I.K., WHITE M., ZACCHEI A. and ZONCA A.
Abstract (from CDS):
We investigate constraints on cosmic reionization extracted from the Planck cosmic microwave background (CMB) data. We combine the Planck CMB anisotropy data in temperature with the low-multipole polarization data to fit ΛCDM models with various parameterizations of the reionization history. We obtain a Thomson optical depth τ=0.058±0.012 for the commonly adopted instantaneous reionization model. This confirms, with data solely from CMB anisotropies, the low value suggested by combining Planck 2015 results with other data sets, and also reduces the uncertainties. We reconstruct the history of the ionization fraction using either a symmetric or an asymmetric model for the transition between the neutral and ionized phases. To determine better constraints on the duration of the reionization process, we also make use of measurements of the amplitude of the kinetic Sunyaev-Zeldovich (kSZ) effect using additional information from the high-resolution Atacama Cosmology Telescope and South Pole Telescope experiments. The average redshift at which reionization occurs is found to lie between z=7.8 and 8.8, depending on the model of reionization adopted. Using kSZ constraints and a redshift-symmetric reionization model, we find an upper limit to the width of the reionization period of Δz<2.8. In all cases, we find that the Universe is ionized at less than the 10% level at redshifts above z~=10. This suggests that an early onset of reionization is strongly disfavoured by the Planck data. We show that this result also reduces the tension between CMB-based analyses and constraints from other astrophysical sources.
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[error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
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Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
ra dec : right ascension and declination (unit and frame defined according to your Output Options)
Grey values are increasing the original precision due to the computation of frame transformations
(wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
[error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
position angle (in degrees North celestial pole to East)
quality : flag of quality
E ≥ 10"
D : 1-10" (and some old data)
C : 0.1-1"
B : 0.01-0.1" + 2MASS, Tyc
A : VLBI, Hipparcos
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FK4
coord.
(ep=B1950 eq=1950) :
12 21 43.55 +15 22 54.8
[
1800 1800 0
]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
ra dec : right ascension and declination (unit and frame defined according to your Output Options)
Grey values are increasing the original precision due to the computation of frame transformations
(wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
[error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
position angle (in degrees North celestial pole to East)
quality : flag of quality
E ≥ 10"
D : 1-10" (and some old data)
C : 0.1-1"
B : 0.01-0.1" + 2MASS, Tyc
A : VLBI, Hipparcos
bibcode : bibcode of the coordinates reference
Gal
coord.
(ep=J2000) :
273.83058 +76.41620
[
1800 1800 0
]
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(wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or '∼'(unknown)
quality : flag of quality ( A=best quality -> E=worst quality, ∼=unknown quality)
References (73 between 1850 and 2024) (Total 73)
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