Publications

BibTex format

@article{Aghanim:2016:0004-6361/201628636,
author = {Aghanim, N and Alves, MIR and Arzoumanian, D 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 Bonavera, L and Bond, JR and Borrill, J and Bouchet, FR and Boulanger, F and Bracco, A and Bucher, M and Burigana, C and Calabrese, E and Cardoso, J-F and Chiang, HC and Colombo, LPL and Combet, C and Comis, B and Couchot, F and Coulais, A 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 Ferriere, K 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 a},
doi = {0004-6361/201628636},
journal = {Astronomy & Astrophysics},
title = {Planck intermediate results XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap},
url = {http://dx.doi.org/10.1051/0004-6361/201628636},
volume = {596},
year = {2016}
}

Download

RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Using data from the Planck satellite, we study the statistical properties of interstellar dust polarization at high Galactic latitudes around the south pole (b < −60°). Our aim is to advance the understanding of the magnetized interstellar medium (ISM), and to provide a modelling framework of the polarized dust foreground for use in cosmic microwave background (CMB) component-separation procedures. We examine the Stokes I, Q, and U maps at 353 GHz, and particularly the statistical distribution of the polarization fraction (p) and angle (ψ), in order to characterize the ordered and turbulent components of the Galactic magnetic field (GMF) in the solar neighbourhood. The Q and U maps show patterns at large angular scales, which we relate to the mean orientation of the GMF towards Galactic coordinates (l0,b0) = (70° ± 5°,24° ± 5°). The histogram of the observed p values shows a wide dispersion up to 25%. The histogram of ψ has a standard deviation of 12° about the regular pattern expected from the ordered GMF. We build a phenomenological model that connects the distributions of p and ψ to a statistical description of the turbulent component of the GMF, assuming a uniform effective polarization fraction (p0) of dust emission. To compute the Stokes parameters, we approximate the integration along the line of sight (LOS) as a sum over a set of N independent polarization layers, in each of which the turbulent component of the GMF is obtained from Gaussian realizations of a power-law power spectrum. We are able to reproduce the observed p and ψ distributions using a p0 value of 26%, a ratio of 0.9 between the strengths of the turbulent and mean components of the GMF, and a small value of N. The mean value of p (inferred from the fit of the large-scale patterns in the Stokes maps) is 12 ± 1%. We relate the polarization layers to the density structure and to the correlation length of the GMF along th
AU  - Aghanim,N
AU  - Alves,MIR
AU  - Arzoumanian,D
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  - Bonavera,L
AU  - Bond,JR
AU  - Borrill,J
AU  - Bouchet,FR
AU  - Boulanger,F
AU  - Bracco,A
AU  - Bucher,M
AU  - Burigana,C
AU  - Calabrese,E
AU  - Cardoso,J-F
AU  - Chiang,HC
AU  - Colombo,LPL
AU  - Combet,C
AU  - Comis,B
AU  - Couchot,F
AU  - Coulais,A
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  - Ferriere,K
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  - Gonzalez-Nuevo,J
AU  - Gorski,KM
AU  - Gratton,S
AU  - Gregorio,A
AU  - Gruppuso,A
AU  - Gudmundsson,JE
AU  - Guillet,V
AU  - Hansen,FK
AU  - Helou,G
AU  - Henrot-Versille,S
AU  - Herranz,D
AU  - Hivon,E
AU  - Huang,Z
AU  - Jaffe,AH
AU  - Jaffe,TR
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  - Langer,M
AU  - Lasenby,A
AU  - Lattanzi,M
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  - Miville-Deschenes,M-A
AU  - Molinari,D
AU  - Moneti,A
AU  - Montier,L
AU  - Morgante,G
AU  - Moss,A
AU  - Naselsky,P
AU  - Natoli,P
AU  - Neveu,J
AU  - Norgaard-Nielsen,HU
AU  - Oppermann,N
AU  - Oxborrow,CA
AU  - Pagano,L
AU  - Paoletti,D
AU  - Partridge,B
AU  - Perdereau,O
AU  - Perotto,L
AU  - Pettorino,V
AU  - Piacentini,F
AU  - Plaszczynski,S
AU  - Polenta,G
AU  - Rachen,JP
AU  - Rebolo,R
AU  - Reinecke,M
AU  - Remazeilles,M
AU  - Renzi,A
AU  - Ristorcelli,I
AU  - Rocha,G
AU  - Rossetti,M
AU  - Roudier,G
AU  - Ruiz-Granados,B
AU  - Salvati,L
AU  - Sandri,M
AU  - Savelainen,M
AU  - Scott,D
AU  - Sirignano,C
AU  - Soler,JD
AU  - Suur-Uski,A-S
AU  - Tauber,JA
AU  - Tavagnacco,D
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  - Villa,F
AU  - Wandelt,BD
AU  - Wehus,IK
AU  - Zacchei,A
AU  - Zonca,A
DO  - 0004-6361/201628636
PY  - 2016///
SN  - 1432-0746
TI  - Planck intermediate results XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap
T2  - Astronomy & Astrophysics
UR  - http://dx.doi.org/10.1051/0004-6361/201628636
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000390797900052&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/44444
VL  - 596
ER  -

Download

Professor Andrew H Jaffe

Contact

Assistant

Location

Summary

Citation

BibTex format

RIS format (EndNote, RefMan)