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@article{Akrami:2020:0004-6361/201833881,
author = {Akrami, Y 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 Bersanelli, M and Bielewicz, P and Bond, JR and Borrill, J and Bouchet, FR and Boulanger, F and Bucher, M and Burigana, C and Calabrese, E and Cardoso, J-F and Carron, J and Casaponsa, B and Challinor, A and Colombo, LPL and Combet, C and Crill, BP and Cuttaia, F 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 Donzelli, S and Dore, O and Ducout, A and Dupac, X and Efstathiou, G and Elsner, F and Ensslin, TA and Eriksen, HK and Falgarone, E and Fernandez-Cobos, R and Finelli, F and Forastieri, 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 Gonzalez-Nuevo, J and Gorski, KM and Gratton, S and Gruppuso, A and Gudmundsson, JE and Han},
doi = {0004-6361/201833881},
journal = {Astronomy and Astrophysics: a European journal},
title = {Planck 2018 results: IV. Diffuse component separation},
url = {http://dx.doi.org/10.1051/0004-6361/201833881},
volume = {641},
year = {2020}
}

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TY  - JOUR
AB  - We present full-sky maps of the cosmic microwave background (CMB) and polarized synchrotron and thermal dust emission, derived from the third set of Planck frequency maps. These products have significantly lower contamination from instrumental systematic effects than previous versions. The methodologies used to derive these maps follow closely those described in earlier papers, adopting four methods (Commander, NILC, SEVEM, and SMICA) to extract the CMB component, as well as three methods (Commander, GNILC, and SMICA) to extract astrophysical components. Our revised CMB temperature maps agree with corresponding products in the Planck 2015 delivery, whereas the polarization maps exhibit significantly lower large-scale power, reflecting the improved data processing described in companion papers; however, the noise properties of the resulting data products are complicated, and the best available end-to-end simulations exhibit relative biases with respect to the data at the few percent level. Using these maps, we are for the first time able to fit the spectral index of thermal dust independently over 3° regions. We derive a conservative estimate of the mean spectral index of polarized thermal dust emission of βd=1.55±0.05, where the uncertainty marginalizes both over all known systematic uncertainties and different estimation techniques. For polarized synchrotron emission, we find a mean spectral index of βs=−3.1±0.1, consistent with previously reported measurements. We note that the current data processing does not allow for construction of unbiased single-bolometer maps, and this limits our ability to extract CO emission and correlated components. The foreground results for intensity derived in this paper therefore do not supersede corresponding Planck 2015 products. For polarization the new results supersede the corresponding 2015 products in all respects.
AU  - Akrami,Y
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  - Bersanelli,M
AU  - Bielewicz,P
AU  - Bond,JR
AU  - Borrill,J
AU  - Bouchet,FR
AU  - Boulanger,F
AU  - Bucher,M
AU  - Burigana,C
AU  - Calabrese,E
AU  - Cardoso,J-F
AU  - Carron,J
AU  - Casaponsa,B
AU  - Challinor,A
AU  - Colombo,LPL
AU  - Combet,C
AU  - Crill,BP
AU  - Cuttaia,F
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  - Donzelli,S
AU  - Dore,O
AU  - Ducout,A
AU  - Dupac,X
AU  - Efstathiou,G
AU  - Elsner,F
AU  - Ensslin,TA
AU  - Eriksen,HK
AU  - Falgarone,E
AU  - Fernandez-Cobos,R
AU  - Finelli,F
AU  - Forastieri,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  - Gruppuso,A
AU  - Gudmundsson,JE
AU  - Handley,W
AU  - Hansen,FK
AU  - Helou,G
AU  - Herranz,D
AU  - Hildebrandt,SR
AU  - Huang,Z
AU  - Jaffe,AH
AU  - Karakci,A
AU  - Keihanen,E
AU  - Keskitalo,R
AU  - Kiiveri,K
AU  - Kim,J
AU  - Kisner,TS
AU  - Krachmalnicoff,N
AU  - Kunz,M
AU  - Kurki-Suonio,H
AU  - Lagache,G
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  - Lindholm,V
AU  - Lopez-Caniego,M
AU  - Lubin,PM
AU  - Ma,Y-Z
AU  - Macias-Perez,JF
AU  - Maggio,G
AU  - Maino,D
AU  - Mandolesi,N
AU  - Mangilli,A
AU  - Marcos-Caballero,A
AU  - Maris,M
AU  - Martin,PG
AU  - Martinez-Gonzalez,E
AU  - Matarrese,S
AU  - Mauri,N
AU  - McEwen,JD
AU  - Meinhold,PR
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  - Natoli,P
AU  - Oppizzi,F
AU  - Pagano,L
AU  - Paoletti,D
AU  - Partridge,B
AU  - Peel,M
AU  - Pettorino,V
AU  - Piacentini,F
AU  - Polenta,G
AU  - Puget,J-L
AU  - Rachen,JP
AU  - Reinecke,M
AU  - Remazeilles,M
AU  - Renzi,A
AU  - Rocha,G
AU  - Roudier,G
AU  - Rubino-Martin,JA
AU  - Ruiz-Granados,B
AU  - Salvati,L
AU  - Sandri,M
AU  - Savelainen,M
AU  - Scott,D
AU  - Seljebotn,DS
AU  - Sirignano,C
AU  - Spencer,LD
AU  - Suur-Uski,A-S
AU  - Tauber,JA
AU  - Tavagnacco,D
AU  - Tenti,M
AU  - Thommesen,H
AU  - Toffolatti,L
AU  - Tomasi,M
AU  - Trombetti,T
AU  - Valiviita,J
AU  - Van,Tent B
AU  - Vielva,P
AU  - Villa,F
AU  - Vittorio,N
AU  - Wandelt,BD
AU  - Wehus,IK
AU  - Zacchei,A
AU  - Zonca,A
DO  - 0004-6361/201833881
PY  - 2020///
SN  - 0004-6361
TI  - Planck 2018 results: IV. Diffuse component separation
T2  - Astronomy and Astrophysics: a European journal
UR  - http://dx.doi.org/10.1051/0004-6361/201833881
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000571763700004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=a2bf6146997ec60c407a63945d4e92bb
UR  - https://www.aanda.org/articles/aa/full_html/2020/09/aa33881-18/aa33881-18.html
UR  - http://hdl.handle.net/10044/1/107600
VL  - 641
ER  -

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