Planck intermediate results: XLII. Large-scale Galactic magnetic fields
Recent models for the large-scale Galactic magnetic fields in the literature have been largely constrained by synchrotron emission and Faraday rotation measures. We use three different but representative models to compare their predicted polarized synchrotron and dust emission with that measured by...
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| Hauptverfasser: | , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
12 December 2016
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| In: |
Astronomy and astrophysics
Year: 2016, Jahrgang: 596, Pages: 1-28 |
| ISSN: | 1432-0746 |
| DOI: | 10.1051/0004-6361/201528033 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1051/0004-6361/201528033 Verlag, lizenzpflichtig, Volltext: https://www.aanda.org/articles/aa/abs/2016/12/aa28033-15/aa28033-15.html 
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| Verfasserangaben: | Planck Collaboration: R. Adam, P.A.R. Ade, M.I.R. Alves, M. Ashdown, J. Aumont, C. Baccigalupi, A.J. Banday, R.B. Barreiro, N. Bartolo, E. Battaner, K. Benabed, A. Benoit-Lévy, J.-P. Bernard, M. Bersanelli, P. Bielewicz, L. Bonavera, J.R. Bond, J. Borrill, F.R. Bouchet, F. Boulanger, M. Bucher, C. Burigana, R.C. Butler, E. Calabrese, J.-F. Cardoso, A. Catalano, H.C. Chiang, P.R. Christensen, L.P.L. Colombo, C. Combet, F. Couchot, B.P. Crill, A. Curto, F. Cuttaia, L. Danese, R. J. Davis, P. de Bernardis, A. de Rosa, G. de Zotti, J. Delabrouille, C. Dickinson, J.M. Diego, K. Dolag, O. Doré, A. Ducout, X. Dupac, F. Elsner, T.A. Enßlin, H.K. Eriksen, K. Ferrière, F. Finelli, O. Forni, M. Frailis, A.A. Fraisse, E. Franceschi, S. Galeotta, K. Ganga, T. Ghosh, M. Giard, E. Gjerløw, J. González-Nuevo, K.M. Górski, A. Gregorio, A. Gruppuso, J.E. Gudmundsson, F.K. Hansen, D.L. Harrison, C. Hernández-Monteagudo, D. Herranz, S.R. Hildebrandt, M. Hobson, A. Hornstrup, G. Hurier, A.H. Jaffe, T.R. Jaffe, W.C. Jones, M. Juvela, E. Keihänen, R. Keskitalo, T.S. Kisner, J. Knoche, M. Kunz, H. Kurki-Suonio, J.-M. Lamarre, A. Lasenby, M. Lattanzi, C.R. Lawrence, J.P. Leahy, R. Leonardi, F. Levrier, M. Liguori, P.B. Lilje, M. Linden-Vørnle, M. López-Caniego, P.M. Lubin, J.F. Macías-Pérez, G. Maggio, D. Maino, N. Mandolesi, A. Mangilli, M. Maris, P.G. Martin, E. Martínez-González, S. Masi, S. Matarrese, A. Melchiorri, A. Mennella, M. Migliaccio, M.-A. Miville-Deschênes, A. Moneti, L. Montier, G. Morgante, D. Munshi, J.A. Murphy, P. Naselsky, F. Nati, P. Natoli, H.U. Nørgaard-Nielsen, N. Oppermann, E. Orlando, L. Pagano, F. Pajot, R. Paladini, D. Paoletti, F. Pasian, L. Perotto, V. Pettorino, F. Piacentini, M. Piat, E. Pierpaoli, S. Plaszczynski, E. Pointecouteau, G. Polenta, N. Ponthieu, G.W. Pratt, S. Prunet, J.-L. Puget, J.P. Rachen, M. Reinecke, M. Remazeilles, C. Renault, A. Renzi, I. Ristorcelli, G. Rocha, M. Rossetti, G. Roudier, J.A. Rubiño-Martín, B. Rusholme, M. Sandri, D. Santos, M. Savelainen, D. Scott, L. D. Spencer, V. Stolyarov, R. Stompor, A.W. Strong, R. Sudiwala, R. Sunyaev, A.-S. Suur-Uski, J.-F. Sygnet, J.A. Tauber, L. Terenzi, L. Toffolatti, M. Tomasi, M. Tristram, M. Tucci, L. Valenziano, J. Valiviita, F. Van Tent, P. Vielva, F. Villa, L.A. Wade, B.D. Wandelt, I.K. Wehus, D. Yvon, A. Zacchei, and A. Zonca |
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| 245 | 1 | 0 | |a Planck intermediate results |b XLII. Large-scale Galactic magnetic fields |c Planck Collaboration: R. Adam, P.A.R. Ade, M.I.R. Alves, M. Ashdown, J. Aumont, C. Baccigalupi, A.J. Banday, R.B. Barreiro, N. Bartolo, E. Battaner, K. Benabed, A. Benoit-Lévy, J.-P. Bernard, M. Bersanelli, P. Bielewicz, L. Bonavera, J.R. Bond, J. Borrill, F.R. Bouchet, F. Boulanger, M. Bucher, C. Burigana, R.C. Butler, E. Calabrese, J.-F. Cardoso, A. Catalano, H.C. Chiang, P.R. Christensen, L.P.L. Colombo, C. Combet, F. Couchot, B.P. Crill, A. Curto, F. Cuttaia, L. Danese, R. J. Davis, P. de Bernardis, A. de Rosa, G. de Zotti, J. Delabrouille, C. Dickinson, J.M. Diego, K. Dolag, O. Doré, A. Ducout, X. Dupac, F. Elsner, T.A. Enßlin, H.K. Eriksen, K. Ferrière, F. Finelli, O. Forni, M. Frailis, A.A. Fraisse, E. Franceschi, S. Galeotta, K. Ganga, T. Ghosh, M. Giard, E. Gjerløw, J. González-Nuevo, K.M. Górski, A. Gregorio, A. Gruppuso, J.E. Gudmundsson, F.K. Hansen, D.L. Harrison, C. Hernández-Monteagudo, D. Herranz, S.R. Hildebrandt, M. Hobson, A. Hornstrup, G. Hurier, A.H. Jaffe, T.R. Jaffe, W.C. Jones, M. Juvela, E. Keihänen, R. Keskitalo, T.S. Kisner, J. Knoche, M. Kunz, H. Kurki-Suonio, J.-M. Lamarre, A. Lasenby, M. Lattanzi, C.R. Lawrence, J.P. Leahy, R. Leonardi, F. Levrier, M. Liguori, P.B. Lilje, M. Linden-Vørnle, M. López-Caniego, P.M. Lubin, J.F. Macías-Pérez, G. Maggio, D. Maino, N. Mandolesi, A. Mangilli, M. Maris, P.G. Martin, E. Martínez-González, S. Masi, S. Matarrese, A. Melchiorri, A. Mennella, M. Migliaccio, M.-A. Miville-Deschênes, A. Moneti, L. Montier, G. Morgante, D. Munshi, J.A. Murphy, P. Naselsky, F. Nati, P. Natoli, H.U. Nørgaard-Nielsen, N. Oppermann, E. Orlando, L. Pagano, F. Pajot, R. Paladini, D. Paoletti, F. Pasian, L. Perotto, V. Pettorino, F. Piacentini, M. Piat, E. Pierpaoli, S. Plaszczynski, E. Pointecouteau, G. Polenta, N. Ponthieu, G.W. Pratt, S. Prunet, J.-L. Puget, J.P. Rachen, M. Reinecke, M. Remazeilles, C. Renault, A. Renzi, I. Ristorcelli, G. Rocha, M. Rossetti, G. Roudier, J.A. Rubiño-Martín, B. Rusholme, M. Sandri, D. Santos, M. Savelainen, D. Scott, L. D. Spencer, V. Stolyarov, R. Stompor, A.W. Strong, R. Sudiwala, R. Sunyaev, A.-S. Suur-Uski, J.-F. Sygnet, J.A. Tauber, L. Terenzi, L. Toffolatti, M. Tomasi, M. Tristram, M. Tucci, L. Valenziano, J. Valiviita, F. Van Tent, P. Vielva, F. Villa, L.A. Wade, B.D. Wandelt, I.K. Wehus, D. Yvon, A. Zacchei, and A. Zonca |
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| 500 | |a Gesehen am 10.08.2020 | ||
| 520 | |a Recent models for the large-scale Galactic magnetic fields in the literature have been largely constrained by synchrotron emission and Faraday rotation measures. We use three different but representative models to compare their predicted polarized synchrotron and dust emission with that measured by the <i>Planck <i/>satellite. We first update these models to match the <i>Planck <i/>synchrotron products using a common model for the cosmic-ray leptons. We discuss the impact on this analysis of the ongoing problems of component separation in the <i>Planck <i/>microwave bands and of the uncertain cosmic-ray spectrum. In particular, the inferred degree of ordering in the magnetic fields is sensitive to these systematic uncertainties, and we further show the importance of considering the expected variations in the observables in addition to their mean morphology. We then compare the resulting simulated emission to the observed dust polarization and find that the dust predictions do not match the morphology in the <i>Planck <i/>data but underpredict the dust polarization away from the plane. We modify one of the models to roughly match both observables at high latitudes by increasing the field ordering in the thin disc near the observer. Though this specific analysis is dependent on the component separation issues, we present the improved model as a proof of concept for how these studies can be advanced in future using complementary information from ongoing and planned observational projects. | ||
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