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Planck intermediate results L. Evidence of spatial variation of the polarized thermal dust spectral energy distribution and implications for CMB B-mode analysis
- Aghanim, N. (author)
- Ashdown, M. (author)
- Aumont, J. (author)
- show more...
- Baccigalupi, C. (author)
- Ballardini, M. (author)
- Banday, A. J. (author)
- Barreiro, R. B. (author)
- Bartolo, N. (author)
- Basak, S. (author)
- Benabed, K. (author)
- Bernard, J. -P. (author)
- Bersanelli, M. (author)
- Bielewicz, P. (author)
- Bonaldi, A. (author)
- Bonavera, L. (author)
- Bond, J. R. (author)
- Borrill, J. (author)
- Bouchet, F. R. (author)
- Boulanger, F. (author)
- Bracco, A. (author)
- Burigana, C. (author)
- Calabrese, E. (author)
- Cardoso, J. -F. (author)
- Chiang, H. C. (author)
- Colombo, L. P. L. (author)
- Combet, C. (author)
- Comis, B. (author)
- Crill, B. P. (author)
- Curto, A. (author)
- Cuttaia, F. (author)
- Davis, R. J. (author)
- de Bernardis, P. (author)
- de Rosa, A. (author)
- de Zotti, G. (author)
- Delabrouille, J. (author)
- Delouis, J. -M. (author)
- Di Valentino, E. (author)
- Dickinson, C. (author)
- Diego, J. M. (author)
- Dore, O. (author)
- Douspis, M. (author)
- Ducout, A. (author)
- Dupac, X. (author)
- Dusini, S. (author)
- Efstathiou, G. (author)
- Elsner, F. (author)
- Ensslin, T. A. (author)
- Eriksen, H. K. (author)
- Falgarone, E. (author)
- Fantaye, Y. (author)
- Finelli, F. (author)
- Frailis, M. (author)
- Fraisse, A. A. (author)
- Franceschi, E. (author)
- Frolov, A. (author)
- Galeotta, S. (author)
- Galli, S. (author)
- Ganga, K. (author)
- Genova-Santos, R. T. (author)
- Ghosh, T. (author)
- Giard, M. (author)
- Gonzalez-Nuevo, J. (author)
- Gorski, K. M. (author)
- Gregorio, A. (author)
- Gruppuso, A. (author)
- Hansen, F. K. (author)
- Helou, G. (author)
- Herranz, D. (author)
- Hivon, E. (author)
- Huang, Z. (author)
- Jaffe, A. H. (author)
- Jones, W. C. (author)
- Keihanen, E. (author)
- Keskitalo, R. (author)
- Kisner, T. S. (author)
- Krachmalnicoff, N. (author)
- Kunz, M. (author)
- Kurki-Suonio, H. (author)
- Lagache, G. (author)
- Lahteenmaki, A. (author)
- Lamarre, J. -M. (author)
- Lasenby, A. (author)
- Lattanzi, M. (author)
- Lawrence, C. R. (author)
- Le Jeune, M. (author)
- Levrier, F. (author)
- Liguori, M. (author)
- Lilje, P. B. (author)
- Lopez-Caniego, M. (author)
- Lubin, P. M. (author)
- Macias-Perez, J. F. (author)
- Maggio, G. (author)
- Maino, D. (author)
- Mandolesi, N. (author)
- Mangilli, A. (author)
- Maris, M. (author)
- Martin, P. G. (author)
- Martinez-Gonzalez, E. (author)
- Matarrese, S. (author)
- Mauri, N. (author)
- McEwen, J. D. (author)
- Melchiorri, A. (author)
- Mennella, A. (author)
- Migliaccio, M. (author)
- Mitra, S. (author)
- Miville-Deschenes, M. -A. (author)
- Molinari, D. (author)
- Moneti, A. (author)
- Montier, L. (author)
- Morgante, G. (author)
- Moss, A. (author)
- Naselsky, P. (author)
- Norgaard-Nielsen, H. U. (author)
- Oxborrow, C. A. (author)
- Pagano, L. (author)
- Paoletti, D. (author)
- Partridge, B. (author)
- Patrizii, L. (author)
- Perdereau, O. (author)
- Perotto, L. (author)
- Pettorino, V. (author)
- Piacentini, F. (author)
- Plaszczynski, S. (author)
- Polenta, G. (author)
- Puget, J. -L. (author)
- Rachen, J. P. (author)
- Reinecke, M. (author)
- Remazeilles, M. (author)
- Renzi, A. (author)
- Rocha, G. (author)
- Rossetti, M. (author)
- Roudier, G. (author)
- Rubino-Martin, J. A. (author)
- Ruiz-Granados, B. (author)
- Salvati, L. (author)
- Sandri, M. (author)
- Savelainen, M. (author)
- Scott, D. (author)
- Sirignano, C. (author)
- Sirri, G. (author)
- Stanco, L. (author)
- Suur-Uski, A. -S. (author)
- Tauber, J. A. (author)
- Tenti, M. (author)
- Toffolatti, L. (author)
- Tomasi, M. (author)
- Tristram, M. (author)
- Trombetti, T. (author)
- Valiviita, J. (author)
- Vansyngel, F. (author)
- Van Tent, F. (author)
- Vielva, P. (author)
- Wandelt, B. D. (author)
- Wehus, I. K. (author)
- Zacchei, A. (author)
- Zonca, A. (author)
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- (creator_code:org_t)
- 2017-02-28
- 2017
- English.
- In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 599
- Journal article (peer-reviewed)
Abstract
Subject headings
Close
- The characterization of the Galactic foregrounds has been shown to be the main obstacle in the challenging 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- cosmic background radiation
- cosmology
- observations
- submillimeter
- ISM - dust
- extinction
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
- Aghanim, N.
- Ashdown, M.
- Aumont, J.
- Baccigalupi, C.
- Ballardini, M.
- Banday, A. J.
- show more...
- Barreiro, R. B.
- Bartolo, N.
- Basak, S.
- Benabed, K.
- Bernard, J. -P.
- Bersanelli, M.
- Bielewicz, P.
- Bonaldi, A.
- Bonavera, L.
- Bond, J. R.
- Borrill, J.
- Bouchet, F. R.
- Boulanger, F.
- Bracco, A.
- Burigana, C.
- Calabrese, E.
- Cardoso, J. -F.
- Chiang, H. C.
- Colombo, L. P. L ...
- Combet, C.
- Comis, B.
- Crill, B. P.
- Curto, A.
- Cuttaia, F.
- Davis, R. J.
- de Bernardis, P.
- de Rosa, A.
- de Zotti, G.
- Delabrouille, J.
- Delouis, J. -M.
- Di Valentino, E.
- Dickinson, C.
- Diego, J. M.
- Dore, O.
- Douspis, M.
- Ducout, A.
- Dupac, X.
- Dusini, S.
- Efstathiou, G.
- Elsner, F.
- Ensslin, T. A.
- Eriksen, H. K.
- Falgarone, E.
- Fantaye, Y.
- Finelli, F.
- Frailis, M.
- Fraisse, A. A.
- Franceschi, E.
- Frolov, A.
- Galeotta, S.
- Galli, S.
- Ganga, K.
- Genova-Santos, R ...
- Gerbino, Martina
- Ghosh, T.
- Giard, M.
- Gonzalez-Nuevo, ...
- Gorski, K. M.
- Gregorio, A.
- Gruppuso, A.
- Gudmundsson, Jón ...
- Hansen, F. K.
- Helou, G.
- Herranz, D.
- Hivon, E.
- Huang, Z.
- Jaffe, A. H.
- Jones, W. C.
- Keihanen, E.
- Keskitalo, R.
- Kisner, T. S.
- Krachmalnicoff, ...
- Kunz, M.
- Kurki-Suonio, H.
- Lagache, G.
- Lahteenmaki, A.
- Lamarre, J. -M.
- Lasenby, A.
- Lattanzi, M.
- Lawrence, C. R.
- Le Jeune, M.
- Levrier, F.
- Liguori, M.
- Lilje, P. B.
- Lopez-Caniego, M ...
- Lubin, P. M.
- Macias-Perez, J. ...
- Maggio, G.
- Maino, D.
- Mandolesi, N.
- Mangilli, A.
- Maris, M.
- Martin, P. G.
- Martinez-Gonzale ...
- Matarrese, S.
- Mauri, N.
- McEwen, J. D.
- Melchiorri, A.
- Mennella, A.
- Migliaccio, M.
- Mitra, S.
- Miville-Deschene ...
- Molinari, D.
- Moneti, A.
- Montier, L.
- Morgante, G.
- Moss, A.
- Naselsky, P.
- Norgaard-Nielsen ...
- Oxborrow, C. A.
- Pagano, L.
- Paoletti, D.
- Partridge, B.
- Patrizii, L.
- Perdereau, O.
- Perotto, L.
- Pettorino, V.
- Piacentini, F.
- Plaszczynski, S.
- Polenta, G.
- Puget, J. -L.
- Rachen, J. P.
- Reinecke, M.
- Remazeilles, M.
- Renzi, A.
- Rocha, G.
- Rossetti, M.
- Roudier, G.
- Rubino-Martin, J ...
- Ruiz-Granados, B ...
- Salvati, L.
- Sandri, M.
- Savelainen, M.
- Scott, D.
- Sirignano, C.
- Sirri, G.
- Stanco, L.
- Suur-Uski, A. -S ...
- Tauber, J. A.
- Tenti, M.
- Toffolatti, L.
- Tomasi, M.
- Tristram, M.
- Trombetti, T.
- Valiviita, J.
- Vansyngel, F.
- Van Tent, F.
- Vielva, P.
- Wandelt, B. D.
- Wehus, I. K.
- Zacchei, A.
- Zonca, A.
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