Titolo: | Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants |
Autori: | Planck Collaboration Arnaud, M. Ashdown, M. Atrio-Barandela, F. Aumont, J. Baccigalupi, C. Banday, A. J. Barreiro, R. B. Battaner, E. Benabed, K. Benoit-Lévy, A. Pratt, G. W. Puget, J. -L. Rachen, J. P. Reach, W. T. Reich, W. Reinecke, M. Bielewicz, P. Remazeilles, M. Renault, C. Rho, J. Dickinson, C. RICCIARDI, SARA Riller, T. Ristorcelli, I. Rocha, G. Rosset, C. Roudier, G. Rusholme, B. Bobin, J. SANDRI, MAURA Savini, G. Diego, J. M. Scott, D. Stolyarov, V. Sutton, D. Suur-Uski, A. -S. Sygnet, J. -F. Tauber, J. A. TERENZI, LUCA Toffolatti, L. Bond, J. R. Tomasi, M. Donzelli, S. Tristram, M. Tucci, M. UMANA, Grazia Maria Gloria VALENZIANO, LUCA Valiviita, J. Van Tent, B. Vielva, P. VILLA, FABRIZIO Wade, L. A. Borrill, J. Doré, O. Yvon, D. ZACCHEI, Andrea Zonca, A. Bouchet, F. R. Brogan, C. L. BURIGANA, CARLO Cardoso, J. -F. Catalano, A. Chamballu, A. Chiang, H. C. Dupac, X. Christensen, P. R. Colombi, S. Colombo, L. P. L. Crill, B. P. Curto, A. CUTTAIA, FRANCESCO Davies, R. D. Davis, R. J. de Bernardis, P. De Rosa, A. Enßlin, T. A. de Zotti, G. Delabrouille, J. Désert, F. -X. Eriksen, H. K. FINELLI, FABIO Forni, O. FRAILIS, Marco Mortlock, D. Fraisse, A. A. FRANCESCHI, ENRICO GALEOTTA, Samuele Ganga, K. Giard, M. Giraud-Héraud, Y. González-Nuevo, J. Górski, K. M. Gregorio, A. GRUPPUSO, ALESSANDRO Munshi, D. Hansen, F. K. Harrison, D. L. Hernández-Monteagudo, C. Herranz, D. Hildebrandt, S. R. Hobson, M. Holmes, W. A. Huffenberger, K. M. Jaffe, A. H. Jaffe, T. R. Murphy, J. A. Keihänen, E. Keskitalo, R. Kisner, T. S. Kneissl, R. Knoche, J. Kunz, M. Kurki-Suonio, H. Lähteenmäki, A. Lamarre, J. -M. Lasenby, A. Naselsky, P. Lawrence, C. R. Leonardi, R. Liguori, M. Lilje, P. B. Linden-Vørnle, M. López-Caniego, M. Lubin, P. M. Maino, D. MARIS, Michele Marshall, D. J. Nati, F. Martin, P. G. Martínez-González, E. Masi, S. Matarrese, S. Mazzotta, P. Melchiorri, A. Mendes, L. Mennella, A. Migliaccio, M. Miville-Deschênes, M. -A. Noviello, F. Moneti, A. Montier, L. MORGANTE, GIANLUCA Novikov, D. Novikov, I. Oppermann, N. Oxborrow, C. A. Bernard, J. -P. Pagano, L. Pajot, F. Paladini, R. Pasian, F. Peel, M. Perdereau, O. Perrotta, F. Piacentini, F. Piat, M. Pietrobon, D. Bersanelli, M. Plaszczynski, S. Pointecouteau, E. Polenta, G. Popa, L. |
Data pubblicazione: | 2016 |
Rivista: | ASTRONOMY & ASTROPHYSICS |
Numero: | 586 |
Da pagina:: | A134 |
Abstract: | The all-sky Planck survey in 9 frequency bands was used to search for emission from all 274 known Galactic supernova remnants. Of these, 16 were detected in at least two Planck frequencies. The radio-through-microwave spectral energy distributions were compiled to determine the mechanism for microwave emission. In only one case, IC 443, is there high-frequency emission clearly from dust associated with the supernova remnant. In all cases, the low-frequency emission is from synchrotron radiation. As predicted for a population of relativistic particles with energy distribution that extends continuously to high energies, a single power law is evident for many sources, including the Crab and PKS 1209-51/52. A decrease in flux density relative to the extrapolation of radio emission is evident in several sources. Their spectral energy distributions can be approximated as broken power laws, S<SUB>ν</SUB> ∝ ν<SUP>-α</SUP>, with the spectral index, α, increasing by 0.5-1 above a break frequency in the range 10-60 GHz. The break could be due to synchrotron losses. |
URI: | http://hdl.handle.net/20.500.12386/25291 |
URL: | https://www.aanda.org/articles/aa/abs/2016/02/aa25022-14/aa25022-14.html |
ISSN: | 0004-6361 |
DOI: | 10.1051/0004-6361/201425022 |
Bibcode ADS: | 2016A&A...586A.134P |
Fulltext: | open |
È visualizzato nelle collezioni: | 1.01 Articoli in rivista
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