Publications

BibTex format

@article{Aghanim:2017:0004-6361/201629164,
author = {Aghanim, N and Ashdown, M and Aumont, J and Baccigalupi, C and Ballardini, M and Banday, AJ and Barreiro, RB and Bartolo, N and Basak, S and Benabed, K and Bernard, J-P and Bersanelli, M and Bielewicz, P and Bonaldi, A and Bonavera, L and Bond, JR and Borrill, J and Bouchet, FR and Boulanger, F and Bracco, A and Burigana, C and Calabrese, E and Cardoso, J-F and Chiang, HC and Colombo, LPL and Combet, C and Comis, B and Crill, BP and Curto, A and Cuttaia, F and Davis, RJ and de, Bernardis P and de, Rosa A and de, Zotti G and Delabrouille, J and Delouis, J-M and Di, Valentino E and Dickinson, C and Diego, JM and Dore, O and Douspis, M and Ducout, A and Dupac, X and Dusini, S and Efstathiou, G and Elsner, F and Ensslin, TA and Eriksen, HK and Falgarone, E and Fantaye, Y and Finelli, F and Frailis, M and Fraisse, AA and Franceschi, E and Frolov, A and Galeotta, S and Galli, S and Ganga, K and Genova-Santos, RT and Gerbino, M and Ghosh, T and Giard, M and Gonzalez-Nuevo, J and Gorski, KM an},
doi = {0004-6361/201629164},
journal = {Astronomy and Astrophysics},
title = {Planck intermediate results L. Evidence of spatial variation of the polarized thermal dust spectral energy distribution and implications for CMB B-mode analysis},
url = {http://dx.doi.org/10.1051/0004-6361/201629164},
volume = {599},
year = {2017}
}

Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - The characterization of the Galactic foregrounds has been shown to be the main obstacle in thechallenging quest to detect primordial B-modes in the polarized microwave sky. We make use of the Planck-HFI 2015 data release at high frequencies to place new constraints on the properties of the polarized thermal dust emission at high Galactic latitudes. Here, we specifically study the spatial variability of the dust polarized spectral energy distribution (SED), and its potential impact on the determination of the tensor-to-scalar ratio, r. We use the correlation ratio of the CBB angular power spectra between the 217 and 353 GHz channels as a tracer of these potential variations, computed on different high Galactic latitude regions, ranging from 80% to 20% of the sky. The new insight from Planck data is a departure of the correlation ratio from unity that cannot be attributed to a spurious decorrelation due to the cosmic microwave background, instrumental noise, or instrumental systematics. The effect is marginally detected on each region, but the statistical combination of all the regions gives more than 99% confidence for this variation in polarized dust properties. In addition, we show that the decorrelation increases when there is a decrease in the mean column density of the region of the sky being considered, and we propose a simple power-law empirical model for this dependence, which matches what is seen in the Planck data. We explore the effect that this measured decorrelation has on simulations of the BICEP2-Keck Array/Planck analysis and show that the 2015 constraints from these data still allow a decorrelation between the dust at 150 and 353 GHz that is compatible with our measured value. Finally, using simplified models, we show that either spatial variation of the dust SED or of the dust polarization angle are able to produce decorrelations between 217 and 353 GHz data similar to the values we observe in the data.
AU  - Aghanim,N
AU  - Ashdown,M
AU  - Aumont,J
AU  - Baccigalupi,C
AU  - Ballardini,M
AU  - Banday,AJ
AU  - Barreiro,RB
AU  - Bartolo,N
AU  - Basak,S
AU  - Benabed,K
AU  - Bernard,J-P
AU  - Bersanelli,M
AU  - Bielewicz,P
AU  - Bonaldi,A
AU  - Bonavera,L
AU  - Bond,JR
AU  - Borrill,J
AU  - Bouchet,FR
AU  - Boulanger,F
AU  - Bracco,A
AU  - Burigana,C
AU  - Calabrese,E
AU  - Cardoso,J-F
AU  - Chiang,HC
AU  - Colombo,LPL
AU  - Combet,C
AU  - Comis,B
AU  - Crill,BP
AU  - Curto,A
AU  - Cuttaia,F
AU  - Davis,RJ
AU  - de,Bernardis P
AU  - de,Rosa A
AU  - de,Zotti G
AU  - Delabrouille,J
AU  - Delouis,J-M
AU  - Di,Valentino E
AU  - Dickinson,C
AU  - Diego,JM
AU  - Dore,O
AU  - Douspis,M
AU  - Ducout,A
AU  - Dupac,X
AU  - Dusini,S
AU  - Efstathiou,G
AU  - Elsner,F
AU  - Ensslin,TA
AU  - Eriksen,HK
AU  - Falgarone,E
AU  - Fantaye,Y
AU  - Finelli,F
AU  - Frailis,M
AU  - Fraisse,AA
AU  - Franceschi,E
AU  - Frolov,A
AU  - Galeotta,S
AU  - Galli,S
AU  - Ganga,K
AU  - Genova-Santos,RT
AU  - Gerbino,M
AU  - Ghosh,T
AU  - Giard,M
AU  - Gonzalez-Nuevo,J
AU  - Gorski,KM
AU  - Gregorio,A
AU  - Gruppuso,A
AU  - Gudmundsson,JE
AU  - Hansen,FK
AU  - Helou,G
AU  - Herranz,D
AU  - Hivon,E
AU  - Huang,Z
AU  - Jaffe,AH
AU  - Jones,WC
AU  - Keihanen,E
AU  - Keskitalo,R
AU  - Kisner,TS
AU  - Krachmalnicoff,N
AU  - Kunz,M
AU  - Kurki-Suonio,H
AU  - Lagache,G
AU  - Lahteenmaki,A
AU  - Lamarre,J-M
AU  - Lasenby,A
AU  - Lattanzi,M
AU  - Lawrence,CR
AU  - Le,Jeune M
AU  - Levrier,F
AU  - Liguori,M
AU  - Lilje,PB
AU  - Lopez-Caniego,M
AU  - Lubin,PM
AU  - Macias-Perez,JF
AU  - Maggio,G
AU  - Maino,D
AU  - Mandolesi,N
AU  - Mangilli,A
AU  - Maris,M
AU  - Martin,PG
AU  - Martinez-Gonzalez,E
AU  - Matarrese,S
AU  - Mauri,N
AU  - McEwen,JD
AU  - Melchiorri,A
AU  - Mennella,A
AU  - Migliaccio,M
AU  - Mitra,S
AU  - Miville-Deschenes,M-A
AU  - Molinari,D
AU  - Moneti,A
AU  - Montier,L
AU  - Morgante,G
AU  - Moss,A
AU  - Naselsky,P
AU  - Norgaard-Nielsen,HU
AU  - Oxborrow,CA
AU  - Pagano,L
AU  - Paoletti,D
AU  - Partridge,B
AU  - Patrizii,L
AU  - Perdereau,O
AU  - Perotto,L
AU  - Pettorino,V
AU  - Piacentini,F
AU  - Plaszczynski,S
AU  - Polenta,G
AU  - Puget,J-L
AU  - Rachen,JP
AU  - Reinecke,M
AU  - Remazeilles,M
AU  - Renzi,A
AU  - Rocha,G
AU  - Rossetti,M
AU  - Roudier,G
AU  - Rubino-Martin,JA
AU  - Ruiz-Granados,B
AU  - Salvati,L
AU  - Sandri,M
AU  - Savelainen,M
AU  - Scott,D
AU  - Sirignano,C
AU  - Sirri,G
AU  - Stanco,L
AU  - Suur-Uski,A-S
AU  - Tauber,JA
AU  - Tenti,M
AU  - Toffolatti,L
AU  - Tomasi,M
AU  - Tristram,M
AU  - Trombetti,T
AU  - Valiviita,J
AU  - Vansyngel,F
AU  - Van,Tent F
AU  - Vielva,P
AU  - Wandelt,BD
AU  - Wehus,IK
AU  - Zacchei,A
AU  - Zonca,A
DO  - 0004-6361/201629164
PY  - 2017///
SN  - 0004-6361
TI  - Planck intermediate results L. Evidence of spatial variation of the polarized thermal dust spectral energy distribution and implications for CMB B-mode analysis
T2  - Astronomy and Astrophysics
UR  - http://dx.doi.org/10.1051/0004-6361/201629164
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000395821900035&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/60005
VL  - 599
ER  -

Download

Professor Andrew H Jaffe

Contact

Assistant

Location

Summary

Citation

BibTex format

RIS format (EndNote, RefMan)