%0 Generic %1 citeulike:13160234 %A Collaboration, Planck %A Ade, P. A. R. %A Aghanim, N. %A Alves, M. I. R. %A Aniano, G. %A Armitage-Caplan, C. %A Arnaud, M. %A Arzoumanian, D. %A Ashdown, M. %A Atrio-Barandela, F. %A Aumont, J. %A Baccigalupi, C. %A Banday, A. J. %A Barreiro, R. B. %A Battaner, E. %A Benabed, K. %A Benoit-Lévy, A. %A Bernard, J. P. %A Bersanelli, M. %A Bielewicz, P. %A Bond, J. R. %A Borrill, J. %A Bouchet, F. R. %A Boulanger, F. %A Bracco, A. %A Burigana, C. %A Cardoso, J. F. %A Catalano, A. %A Chamballu, A. %A Chiang, H. C. %A Christensen, P. R. %A Colombi, S. %A Colombo, L. P. L. %A Combet, C. %A Couchot, F. %A Coulais, A. %A Crill, B. P. %A Curto, A. %A Cuttaia, F. %A Danese, L. %A Davies, R. D. %A Davis, R. J. %A de Bernardis, P. %A de Rosa, A. %A de Zotti, G. %A Delabrouille, J. %A Dickinson, C. %A Diego, J. M. %A Donzelli, S. %A Doré, O. %A Douspis, M. %A Dupac, X. %A Enßlin, T. A. %A Eriksen, H. K. %A Falgarone, E. %A Fanciullo, L. %A Ferrière, K. %A Finelli, F. %A Forni, O. %A Frailis, M. %A Fraisse, A. A. %A Franceschi, E. %A Galeotta, S. %A Ganga, K. %A Ghosh, T. %A Giard, M. %A Giraud-Héraud, Y. %A González-Nuevo, J. %A Górski, K. M. %A Gregorio, A. %A Gruppuso, A. %A Guillet, V. %A Hansen, F. K. %A Harrison, D. L. %A Helou, G. %A Hernández-Monteagudo, C. %A Hildebrandt, S. R. %A Hivon, E. %A Hobson, M. %A Holmes, W. A. %A Hornstrup, A. %A Huffenberger, K. M. %A Jaffe, A. H. %A Jaffe, T. R. %A Jones, W. C. %A Juvela, M. %A Keihänen, E. %A Keskitalo, R. %A Kisner, T. S. %A Kneissl, R. %A Knoche, J. %A Kunz, M. %A Kurki-Suonio, H. %A Lagache, G. %A Lamarre, J. M. %A Lasenby, A. %A Lawrence, C. R. %A Leonardi, R. %A Levrier, F. %A Liguori, M. %A Lilje, P. B. %A Linden-Vørnle, M. %A López-Caniego, M. %A Lubin, P. M. %A Mac\'ıas-Pérez, J. F. %A Maino, D. %A Mandolesi, N. %A Maris, M. %A Marshall, D. J. %A Martin, P. G. %A Mart\'ınez-González, E. %A Masi, S. %A Matarrese, S. %A Mazzotta, P. %A Melchiorri, A. %A Mendes, L. %A Mennella, A. %A Migliaccio, M. %A Miville-Deschênes, M. A. %A Moneti, A. %A Montier, L. %A Morgante, G. %A Mortlock, D. %A Munshi, D. %A Murphy, J. A. %A Naselsky, P. %A Nati, F. %A Natoli, P. %A Netterfield, C. B. %A Noviello, F. %A Novikov, D. %A Novikov, I. %A Oxborrow, C. A. %A Pagano, L. %A Pajot, F. %A Paoletti, D. %A Pasian, F. %A Pelkonen, V. M. %A Perdereau, O. %A Perotto, L. %A Perrotta, F. %A Piacentini, F. %A Piat, M. %A Pietrobon, D. %A Plaszczynski, S. %A Pointecouteau, E. %A Polenta, G. %A Popa, L. %A Pratt, G. W. %A Prunet, S. %A Puget, J. L. %A Rachen, J. P. %A Reinecke, M. %A Remazeilles, M. %A Renault, C. %A Ricciardi, S. %A Riller, T. %A Ristorcelli, I. %A Rocha, G. %A Rosset, C. %A Roudier, G. %A Rusholme, B. %A Sandri, M. %A Scott, D. %A Soler, J. D. %A Spencer, L. D. %A Stolyarov, V. %A Stompor, R. %A Sudiwala, R. %A Sutton, D. %A Suur-Uski, A. S. %A Sygnet, J. F. %A Tauber, J. A. %A Terenzi, L. %A Toffolatti, L. %A Tomasi, M. %A Tristram, M. %A Tucci, M. %A Umana, G. %A Valenziano, L. %A Valiviita, J. %A Van Tent, B. %A Vielva, P. %A Villa, F. %A Wade, L. A. %A Wandelt, B. D. %A Zonca, A. %D 2014 %K imported %T Planck intermediate results. XX. Comparison of polarized thermal emission from Galactic dust with simulations of MHD turbulence %U http://arxiv.org/abs/1405.0872 %X Polarized emission observed by Planck HFI at 353 GHz towards a sample of nearby fields is presented, focusing on the statistics of polarization fractions \$p\$ and angles \$\psi\$. The polarization fractions and column densities in these nearby fields are representative of the range of values obtained over the whole sky. We find that: (i) the largest polarization fractions are reached in the most diffuse fields; (ii) the maximum polarization fraction \$p\_max\$ decreases with column density \$N\_H\$ in the more opaque fields with \$N\_H > 10^21\,cm^-2\$; and (iii) the polarization fraction along a given line of sight is correlated with the local spatial coherence of the polarization angle. These observations are compared to polarized emission maps computed in simulations of anisotropic magnetohydrodynamical (MHD) turbulence in which we assume a uniform intrinsic polarization fraction of the dust grains. We find that an estimate of this parameter may be recovered from the maximum polarization fraction \$p\_max\$ in diffuse regions where the magnetic field is ordered on large scales and perpendicular to the line of sight. This emphasizes the impact of anisotropies of the magnetic field on the emerging polarization signal. The decrease of the polarization fraction with column density in nearby molecular clouds is well reproduced in the simulations, indicating that it is essentially due to the turbulent structure of the magnetic field: an accumulation of variously polarized structures along the line of sight leads to such an anti-correlation. In the simulations, polarization fractions are also found to anti-correlate with the angle dispersion function \$\Delta\psi\$. abridged

@misc{citeulike:13160234, abstract = {Polarized emission observed by Planck HFI at 353 GHz towards a sample of nearby fields is presented, focusing on the statistics of polarization fractions \$p\$ and angles \$\psi\$. The polarization fractions and column densities in these nearby fields are representative of the range of values obtained over the whole sky. We find that: (i) the largest polarization fractions are reached in the most diffuse fields; (ii) the maximum polarization fraction \$p\_\mathrm{max}\$ decreases with column density \$N\_\mathrm{H}\$ in the more opaque fields with \$N\_\mathrm{H} \> 10^{21}\,\mathrm{cm}^{-2}\$; and (iii) the polarization fraction along a given line of sight is correlated with the local spatial coherence of the polarization angle. These observations are compared to polarized emission maps computed in simulations of anisotropic magnetohydrodynamical (MHD) turbulence in which we assume a uniform intrinsic polarization fraction of the dust grains. We find that an estimate of this parameter may be recovered from the maximum polarization fraction \$p\_\mathrm{max}\$ in diffuse regions where the magnetic field is ordered on large scales and perpendicular to the line of sight. This emphasizes the impact of anisotropies of the magnetic field on the emerging polarization signal. The decrease of the polarization fraction with column density in nearby molecular clouds is well reproduced in the simulations, indicating that it is essentially due to the turbulent structure of the magnetic field: an accumulation of variously polarized structures along the line of sight leads to such an anti-correlation. In the simulations, polarization fractions are also found to anti-correlate with the angle dispersion function \$\Delta\psi\$. [abridged]}, added-at = {2019-03-25T08:20:55.000+0100}, archiveprefix = {arXiv}, author = {Collaboration, Planck and Ade, P. A. R. and Aghanim, N. and Alves, M. I. R. and Aniano, G. and Armitage-Caplan, C. and Arnaud, M. and Arzoumanian, D. and Ashdown, M. and Atrio-Barandela, F. and Aumont, J. and Baccigalupi, C. and Banday, A. J. and Barreiro, R. B. and Battaner, E. and Benabed, K. and Benoit-L\'{e}vy, A. and Bernard, J. P. and Bersanelli, M. and Bielewicz, P. and Bond, J. R. and Borrill, J. and Bouchet, F. R. and Boulanger, F. and Bracco, A. and Burigana, C. and Cardoso, J. F. and Catalano, A. and Chamballu, A. and Chiang, H. C. and Christensen, P. R. and Colombi, S. and Colombo, L. P. L. and Combet, C. and Couchot, F. and Coulais, A. and Crill, B. P. and Curto, A. and Cuttaia, F. and Danese, L. and Davies, R. D. and Davis, R. J. and de Bernardis, P. and de Rosa, A. and de Zotti, G. and Delabrouille, J. and Dickinson, C. and Diego, J. M. and Donzelli, S. and Dor\'{e}, O. and Douspis, M. and Dupac, X. and En{\ss}lin, T. A. and Eriksen, H. K. and Falgarone, E. and Fanciullo, L. and Ferri\`{e}re, K. and Finelli, F. and Forni, O. and Frailis, M. and Fraisse, A. A. and Franceschi, E. and Galeotta, S. and Ganga, K. and Ghosh, T. and Giard, M. and Giraud-H\'{e}raud, Y. and Gonz\'{a}lez-Nuevo, J. and G\'{o}rski, K. M. and Gregorio, A. and Gruppuso, A. and Guillet, V. and Hansen, F. K. and Harrison, D. L. and Helou, G. and Hern\'{a}ndez-Monteagudo, C. and Hildebrandt, S. R. and Hivon, E. and Hobson, M. and Holmes, W. A. and Hornstrup, A. and Huffenberger, K. M. and Jaffe, A. H. and Jaffe, T. R. and Jones, W. C. and Juvela, M. and Keih\"{a}nen, E. and Keskitalo, R. and Kisner, T. S. and Kneissl, R. and Knoche, J. and Kunz, M. and Kurki-Suonio, H. and Lagache, G. and Lamarre, J. M. and Lasenby, A. and Lawrence, C. R. and Leonardi, R. and Levrier, F. and Liguori, M. and Lilje, P. B. and Linden-V{\o}rnle, M. and L\'{o}pez-Caniego, M. and Lubin, P. M. and Mac\'{\i}as-P\'{e}rez, J. F. and Maino, D. and Mandolesi, N. and Maris, M. and Marshall, D. J. and Martin, P. G. and Mart\'{\i}nez-Gonz\'{a}lez, E. and Masi, S. and Matarrese, S. and Mazzotta, P. and Melchiorri, A. and Mendes, L. and Mennella, A. and Migliaccio, M. and Miville-Desch\^{e}nes, M. A. and Moneti, A. and Montier, L. and Morgante, G. and Mortlock, D. and Munshi, D. and Murphy, J. A. and Naselsky, P. and Nati, F. and Natoli, P. and Netterfield, C. B. and Noviello, F. and Novikov, D. and Novikov, I. and Oxborrow, C. A. and Pagano, L. and Pajot, F. and Paoletti, D. and Pasian, F. and Pelkonen, V. M. and Perdereau, O. and Perotto, L. and Perrotta, F. and Piacentini, F. and Piat, M. and Pietrobon, D. and Plaszczynski, S. and Pointecouteau, E. and Polenta, G. and Popa, L. and Pratt, G. W. and Prunet, S. and Puget, J. L. and Rachen, J. P. and Reinecke, M. and Remazeilles, M. and Renault, C. and Ricciardi, S. and Riller, T. and Ristorcelli, I. and Rocha, G. and Rosset, C. and Roudier, G. and Rusholme, B. and Sandri, M. and Scott, D. and Soler, J. D. and Spencer, L. D. and Stolyarov, V. and Stompor, R. and Sudiwala, R. and Sutton, D. and Suur-Uski, A. S. and Sygnet, J. F. and Tauber, J. A. and Terenzi, L. and Toffolatti, L. and Tomasi, M. and Tristram, M. and Tucci, M. and Umana, G. and Valenziano, L. and Valiviita, J. and Van Tent, B. and Vielva, P. and Villa, F. and Wade, L. A. and Wandelt, B. D. and Zonca, A.}, biburl = {https://www.bibsonomy.org/bibtex/28c0bf61ba8a8fe60c9d73fa8fcb66b07/ericblackman}, citeulike-article-id = {13160234}, citeulike-linkout-0 = {http://arxiv.org/abs/1405.0872}, citeulike-linkout-1 = {http://arxiv.org/pdf/1405.0872}, day = 5, eprint = {1405.0872}, interhash = {eb89de2c1a7948b9b3b4a34cf32859e0}, intrahash = {8c0bf61ba8a8fe60c9d73fa8fcb66b07}, keywords = {imported}, month = may, posted-at = {2014-05-11 07:47:27}, priority = {2}, timestamp = {2019-03-25T08:20:55.000+0100}, title = {{Planck intermediate results. XX. Comparison of polarized thermal emission from Galactic dust with simulations of MHD turbulence}}, url = {http://arxiv.org/abs/1405.0872}, year = 2014 }