Planck intermediate results: XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap
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...
Published in: | Astronomy & Astrophysics |
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Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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2016
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Online Access: | http://hdl.handle.net/11585/603866 https://doi.org/10.1051/0004-6361/201628636 http://www.edpsciences.org/journal/index.cfm?edpsname=aa |
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ftunibolognairis:oai:cris.unibo.it:11585/603866 |
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openpolar |
institution |
Open Polar |
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IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) |
op_collection_id |
ftunibolognairis |
language |
English |
topic |
Cosmic background radiation Dust extinction ISM: magnetic field Magnetohydrodynamics (MHD) Methods: data analysi Polarization Astronomy and Astrophysic Space and Planetary Science |
spellingShingle |
Cosmic background radiation Dust extinction ISM: magnetic field Magnetohydrodynamics (MHD) Methods: data analysi Polarization Astronomy and Astrophysic Space and Planetary Science Aghanim, N. Alves, M. I. R. Arzoumanian, D. Aumont, J. Banday, A. J. Barreiro, R. B. Bartolo, N. Basak, S. Benabed, K. Bernard, J. P. Bersanelli, M. Bielewicz, P. Bonavera, L. Bond, J. R. Borrill, J. Bouchet, F. R. Boulanger, F. Bracco, A. Bucher, M. Burigana, C. Calabrese, E. Cardoso, J. F. Chiang, H. C. Colombo, L. P. L. Combet, C. Comis, B. Couchot, F. Coulais, A. Crill, B. P. Curto, A. 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. Doré, O. Douspis, M. Ducout, A. Dupac, X. Dusini, S. Efstathiou, G. Elsner, F. Enßlin, T. A. Eriksen, H. K. Falgarone, E. Fantaye, Y. Ferrière, K. Frailis, M. Fraisse, A. A. Franceschi, E. Frolov, A. Galeotta, S. Galli, S. Ganga, K. Génova Santos, R. T. Gerbino, M. Ghosh, T. González Nuevo, J. Górski, K. M. Gratton, S. Gregorio, A. Gudmundsson, J. E. Guillet, V. Hansen, F. K. Helou, G. Henrot Versillé, S. Herranz, D. Hivon, E. Huang, Z. Jaffe, A. H. Jaffe, T. R. Jones, W. C. Keihänen, E. Keskitalo, R. Kisner, T. S. Krachmalnicoff, N. Kunz, M. Kurki Suonio, H. Lagache, G. Lähteenmäki, A. Lamarre, J. M. Langer, M. Lasenby, A. Lattanzi, M. Le Jeune, M. Levrier, F. Liguori, M. Lilje, P. B. López Caniego, M. Lubin, P. M. MacIás Pérez, J. F. Maggio, G. Maino, D. Mandolesi, N. Mangilli, A. Maris, M. Martin, P. G. Martínez González, E. Mcewen, J. D. Melchiorri, A. Mennella, A. Migliaccio, M. Miville Deschênes, M. A. Moneti, A. Montier, L. Morgante, G. Moss, A. Naselsky, P. Natoli, P. Neveu, J. Nørgaard Nielsen, H. U. Oppermann, N. Oxborrow, C. A. Pagano, L. Paoletti, D. Partridge, B. Perdereau, O. Perotto, L. Pettorino, V. Piacentini, F. Plaszczynski, S. Polenta, G. Rachen, J. P. Rebolo, R. Reinecke, M. Remazeilles, M. Renzi, A. Ristorcelli, I. Rocha, G. Rossetti, M. Roudier, G. Ruiz Granados, B. Salvati, L. Sandri, M. Savelainen, M. Scott, D. Sirignano, C. Soler, J. D. Suur Uski, A. S. Tauber, J. A. Tavagnacco, D. Toffolatti, L. Tomasi, M. Tristram, M. Trombetti, T. Valiviita, J. Vansyngel, F. Van Tent, F. Vielva, P. Villa, F. Wandelt, B. D. Wehus, I. K. Zacchei, A. Zonca, A. BACCIGALUPI, CARLO BALLARDINI, MARIO CUTTAIA, FRANCESCO FINELLI, FABIO GRUPPUSO, ALESSANDRO MATARRESE, SABINO MAURI, NICOLETTA MOLINARI, DIEGO TENTI, MATTEO Planck intermediate results: XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap |
topic_facet |
Cosmic background radiation Dust extinction ISM: magnetic field Magnetohydrodynamics (MHD) Methods: data analysi Polarization Astronomy and Astrophysic Space and Planetary Science |
description |
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 the LOS. We emphasize the simplicity of our model (involving only a few parameters), which can be easily computed on the ... |
author2 |
Aghanim, N. Alves, M.I.R. Arzoumanian, D. Aumont, J. Baccigalupi, C. Ballardini, M. Banday, A.J. Barreiro, R.B. Bartolo, N. Basak, S. Benabed, K. Bernard, J.-P. Bersanelli, M. Bielewicz, P. Bonavera, L. Bond, J.R. Borrill, J. Bouchet, F.R. Boulanger, F. Bracco, A. Bucher, M. Burigana, C. Calabrese, E. Cardoso, J.-F. 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. Delouis, J.-M. Di Valentino, E. Dickinson, C. Diego, J.M. Doré, O. Douspis, M. Ducout, A. Dupac, X. Dusini, S. Efstathiou, G. Elsner, F. Enßlin, T.A. |
format |
Article in Journal/Newspaper |
author |
Aghanim, N. Alves, M. I. R. Arzoumanian, D. Aumont, J. Banday, A. J. Barreiro, R. B. Bartolo, N. Basak, S. Benabed, K. Bernard, J. P. Bersanelli, M. Bielewicz, P. Bonavera, L. Bond, J. R. Borrill, J. Bouchet, F. R. Boulanger, F. Bracco, A. Bucher, M. Burigana, C. Calabrese, E. Cardoso, J. F. Chiang, H. C. Colombo, L. P. L. Combet, C. Comis, B. Couchot, F. Coulais, A. Crill, B. P. Curto, A. 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. Doré, O. Douspis, M. Ducout, A. Dupac, X. Dusini, S. Efstathiou, G. Elsner, F. Enßlin, T. A. Eriksen, H. K. Falgarone, E. Fantaye, Y. Ferrière, K. Frailis, M. Fraisse, A. A. Franceschi, E. Frolov, A. Galeotta, S. Galli, S. Ganga, K. Génova Santos, R. T. Gerbino, M. Ghosh, T. González Nuevo, J. Górski, K. M. Gratton, S. Gregorio, A. Gudmundsson, J. E. Guillet, V. Hansen, F. K. Helou, G. Henrot Versillé, S. Herranz, D. Hivon, E. Huang, Z. Jaffe, A. H. Jaffe, T. R. Jones, W. C. Keihänen, E. Keskitalo, R. Kisner, T. S. Krachmalnicoff, N. Kunz, M. Kurki Suonio, H. Lagache, G. Lähteenmäki, A. Lamarre, J. M. Langer, M. Lasenby, A. Lattanzi, M. Le Jeune, M. Levrier, F. Liguori, M. Lilje, P. B. López Caniego, M. Lubin, P. M. MacIás Pérez, J. F. Maggio, G. Maino, D. Mandolesi, N. Mangilli, A. Maris, M. Martin, P. G. Martínez González, E. Mcewen, J. D. Melchiorri, A. Mennella, A. Migliaccio, M. Miville Deschênes, M. A. Moneti, A. Montier, L. Morgante, G. Moss, A. Naselsky, P. Natoli, P. Neveu, J. Nørgaard Nielsen, H. U. Oppermann, N. Oxborrow, C. A. Pagano, L. Paoletti, D. Partridge, B. Perdereau, O. Perotto, L. Pettorino, V. Piacentini, F. Plaszczynski, S. Polenta, G. Rachen, J. P. Rebolo, R. Reinecke, M. Remazeilles, M. Renzi, A. Ristorcelli, I. Rocha, G. Rossetti, M. Roudier, G. Ruiz Granados, B. Salvati, L. Sandri, M. Savelainen, M. Scott, D. Sirignano, C. Soler, J. D. Suur Uski, A. S. Tauber, J. A. Tavagnacco, D. Toffolatti, L. Tomasi, M. Tristram, M. Trombetti, T. Valiviita, J. Vansyngel, F. Van Tent, F. Vielva, P. Villa, F. Wandelt, B. D. Wehus, I. K. Zacchei, A. Zonca, A. BACCIGALUPI, CARLO BALLARDINI, MARIO CUTTAIA, FRANCESCO FINELLI, FABIO GRUPPUSO, ALESSANDRO MATARRESE, SABINO MAURI, NICOLETTA MOLINARI, DIEGO TENTI, MATTEO |
author_facet |
Aghanim, N. Alves, M. I. R. Arzoumanian, D. Aumont, J. Banday, A. J. Barreiro, R. B. Bartolo, N. Basak, S. Benabed, K. Bernard, J. P. Bersanelli, M. Bielewicz, P. Bonavera, L. Bond, J. R. Borrill, J. Bouchet, F. R. Boulanger, F. Bracco, A. Bucher, M. Burigana, C. Calabrese, E. Cardoso, J. F. Chiang, H. C. Colombo, L. P. L. Combet, C. Comis, B. Couchot, F. Coulais, A. Crill, B. P. Curto, A. 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. Doré, O. Douspis, M. Ducout, A. Dupac, X. Dusini, S. Efstathiou, G. Elsner, F. Enßlin, T. A. Eriksen, H. K. Falgarone, E. Fantaye, Y. Ferrière, K. Frailis, M. Fraisse, A. A. Franceschi, E. Frolov, A. Galeotta, S. Galli, S. Ganga, K. Génova Santos, R. T. Gerbino, M. Ghosh, T. González Nuevo, J. Górski, K. M. Gratton, S. Gregorio, A. Gudmundsson, J. E. Guillet, V. Hansen, F. K. Helou, G. Henrot Versillé, S. Herranz, D. Hivon, E. Huang, Z. Jaffe, A. H. Jaffe, T. R. Jones, W. C. Keihänen, E. Keskitalo, R. Kisner, T. S. Krachmalnicoff, N. Kunz, M. Kurki Suonio, H. Lagache, G. Lähteenmäki, A. Lamarre, J. M. Langer, M. Lasenby, A. Lattanzi, M. Le Jeune, M. Levrier, F. Liguori, M. Lilje, P. B. López Caniego, M. Lubin, P. M. MacIás Pérez, J. F. Maggio, G. Maino, D. Mandolesi, N. Mangilli, A. Maris, M. Martin, P. G. Martínez González, E. Mcewen, J. D. Melchiorri, A. Mennella, A. Migliaccio, M. Miville Deschênes, M. A. Moneti, A. Montier, L. Morgante, G. Moss, A. Naselsky, P. Natoli, P. Neveu, J. Nørgaard Nielsen, H. U. Oppermann, N. Oxborrow, C. A. Pagano, L. Paoletti, D. Partridge, B. Perdereau, O. Perotto, L. Pettorino, V. Piacentini, F. Plaszczynski, S. Polenta, G. Rachen, J. P. Rebolo, R. Reinecke, M. Remazeilles, M. Renzi, A. Ristorcelli, I. Rocha, G. Rossetti, M. Roudier, G. Ruiz Granados, B. Salvati, L. Sandri, M. Savelainen, M. Scott, D. Sirignano, C. Soler, J. D. Suur Uski, A. S. Tauber, J. A. Tavagnacco, D. Toffolatti, L. Tomasi, M. Tristram, M. Trombetti, T. Valiviita, J. Vansyngel, F. Van Tent, F. Vielva, P. Villa, F. Wandelt, B. D. Wehus, I. K. Zacchei, A. Zonca, A. BACCIGALUPI, CARLO BALLARDINI, MARIO CUTTAIA, FRANCESCO FINELLI, FABIO GRUPPUSO, ALESSANDRO MATARRESE, SABINO MAURI, NICOLETTA MOLINARI, DIEGO TENTI, MATTEO |
author_sort |
Aghanim, N. |
title |
Planck intermediate results: XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap |
title_short |
Planck intermediate results: XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap |
title_full |
Planck intermediate results: XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap |
title_fullStr |
Planck intermediate results: XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap |
title_full_unstemmed |
Planck intermediate results: XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap |
title_sort |
planck intermediate results: xliv. structure of the galactic magnetic field from dust polarization maps of the southern galactic cap |
publishDate |
2016 |
url |
http://hdl.handle.net/11585/603866 https://doi.org/10.1051/0004-6361/201628636 http://www.edpsciences.org/journal/index.cfm?edpsname=aa |
geographic |
South Pole |
geographic_facet |
South Pole |
genre |
South pole |
genre_facet |
South pole |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000390797900052 volume:596 firstpage:1 lastpage:15 numberofpages:15 journal:ASTRONOMY & ASTROPHYSICS http://hdl.handle.net/11585/603866 doi:10.1051/0004-6361/201628636 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85006459080 http://www.edpsciences.org/journal/index.cfm?edpsname=aa |
op_doi |
https://doi.org/10.1051/0004-6361/201628636 |
container_title |
Astronomy & Astrophysics |
container_volume |
596 |
container_start_page |
A105 |
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1790608280874123264 |
spelling |
ftunibolognairis:oai:cris.unibo.it:11585/603866 2024-02-11T10:08:43+01:00 Planck intermediate results: XLIV. Structure of the Galactic magnetic field from dust polarization maps of the southern Galactic cap Aghanim, N. Alves, M. I. R. Arzoumanian, D. Aumont, J. Banday, A. J. Barreiro, R. B. Bartolo, N. Basak, S. Benabed, K. Bernard, J. P. Bersanelli, M. Bielewicz, P. Bonavera, L. Bond, J. R. Borrill, J. Bouchet, F. R. Boulanger, F. Bracco, A. Bucher, M. Burigana, C. Calabrese, E. Cardoso, J. F. Chiang, H. C. Colombo, L. P. L. Combet, C. Comis, B. Couchot, F. Coulais, A. Crill, B. P. Curto, A. 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. Doré, O. Douspis, M. Ducout, A. Dupac, X. Dusini, S. Efstathiou, G. Elsner, F. Enßlin, T. A. Eriksen, H. K. Falgarone, E. Fantaye, Y. Ferrière, K. Frailis, M. Fraisse, A. A. Franceschi, E. Frolov, A. Galeotta, S. Galli, S. Ganga, K. Génova Santos, R. T. Gerbino, M. Ghosh, T. González Nuevo, J. Górski, K. M. Gratton, S. Gregorio, A. Gudmundsson, J. E. Guillet, V. Hansen, F. K. Helou, G. Henrot Versillé, S. Herranz, D. Hivon, E. Huang, Z. Jaffe, A. H. Jaffe, T. R. Jones, W. C. Keihänen, E. Keskitalo, R. Kisner, T. S. Krachmalnicoff, N. Kunz, M. Kurki Suonio, H. Lagache, G. Lähteenmäki, A. Lamarre, J. M. Langer, M. Lasenby, A. Lattanzi, M. Le Jeune, M. Levrier, F. Liguori, M. Lilje, P. B. López Caniego, M. Lubin, P. M. MacIás Pérez, J. F. Maggio, G. Maino, D. Mandolesi, N. Mangilli, A. Maris, M. Martin, P. G. Martínez González, E. Mcewen, J. D. Melchiorri, A. Mennella, A. Migliaccio, M. Miville Deschênes, M. A. Moneti, A. Montier, L. Morgante, G. Moss, A. Naselsky, P. Natoli, P. Neveu, J. Nørgaard Nielsen, H. U. Oppermann, N. Oxborrow, C. A. Pagano, L. Paoletti, D. Partridge, B. Perdereau, O. Perotto, L. Pettorino, V. Piacentini, F. Plaszczynski, S. Polenta, G. Rachen, J. P. Rebolo, R. Reinecke, M. Remazeilles, M. Renzi, A. Ristorcelli, I. Rocha, G. Rossetti, M. Roudier, G. Ruiz Granados, B. Salvati, L. Sandri, M. Savelainen, M. Scott, D. Sirignano, C. Soler, J. D. Suur Uski, A. S. Tauber, J. A. Tavagnacco, D. Toffolatti, L. Tomasi, M. Tristram, M. Trombetti, T. Valiviita, J. Vansyngel, F. Van Tent, F. Vielva, P. Villa, F. Wandelt, B. D. Wehus, I. K. Zacchei, A. Zonca, A. BACCIGALUPI, CARLO BALLARDINI, MARIO CUTTAIA, FRANCESCO FINELLI, FABIO GRUPPUSO, ALESSANDRO MATARRESE, SABINO MAURI, NICOLETTA MOLINARI, DIEGO TENTI, MATTEO Aghanim, N. Alves, M.I.R. Arzoumanian, D. Aumont, J. Baccigalupi, C. Ballardini, M. Banday, A.J. Barreiro, R.B. Bartolo, N. Basak, S. Benabed, K. Bernard, J.-P. Bersanelli, M. Bielewicz, P. Bonavera, L. Bond, J.R. Borrill, J. Bouchet, F.R. Boulanger, F. Bracco, A. Bucher, M. Burigana, C. Calabrese, E. Cardoso, J.-F. 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. Delouis, J.-M. Di Valentino, E. Dickinson, C. Diego, J.M. Doré, O. Douspis, M. Ducout, A. Dupac, X. Dusini, S. Efstathiou, G. Elsner, F. Enßlin, T.A. 2016 STAMPA http://hdl.handle.net/11585/603866 https://doi.org/10.1051/0004-6361/201628636 http://www.edpsciences.org/journal/index.cfm?edpsname=aa eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000390797900052 volume:596 firstpage:1 lastpage:15 numberofpages:15 journal:ASTRONOMY & ASTROPHYSICS http://hdl.handle.net/11585/603866 doi:10.1051/0004-6361/201628636 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85006459080 http://www.edpsciences.org/journal/index.cfm?edpsname=aa Cosmic background radiation Dust extinction ISM: magnetic field Magnetohydrodynamics (MHD) Methods: data analysi Polarization Astronomy and Astrophysic Space and Planetary Science info:eu-repo/semantics/article 2016 ftunibolognairis https://doi.org/10.1051/0004-6361/201628636 2024-01-17T17:49:26Z 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 the LOS. We emphasize the simplicity of our model (involving only a few parameters), which can be easily computed on the ... Article in Journal/Newspaper South pole IRIS Università degli Studi di Bologna (CRIS - Current Research Information System) South Pole Astronomy & Astrophysics 596 A105 |