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    Planck intermediate results XXXI. Microwave survey of Galactic supernova remnants


    Arnaud, M. 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-Lévy, A. and Bernard, J.-P. and Bersanelli, M. and Bielewicz, P. and Bobin, J. and Bond, J.R. and Borrill, J. and Bouchet, F.R. and Brogan, C.L. 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 Crill, B.P. and Curto, A. and Cuttaia, F. and Davies, R.D. and Davis, R.J. and De Bernardis, P. and de Rosa, A. and de Zotti, G. and Delabrouille, J. and Desert, F.-X. and Dickinson, C. and Diego, J.M. and Donzelli, S. and Dore, O. and Dupac, X. and Enßlin, T.A. and Eriksen, H.K. and Finelli, F. and Forni, O. and Frailis, M. and Fraisse, A.A. and Franceschi, E. and Galeotta, S. and Ganga, K. and Giard, M. and Giraud-Héraud, Y. and Gonzalez-Nuevo, J. and Gorski, K.M. and Gregorio, A. and Gruppuso, A. and Hansen, F.K. and Harrison, D. and Hernandez-Monteagudo, C. and Herranz, D. and Hildebrandt, S.R. and Hobson, M. and Holmes, W.A. and Huffenberger, K.M. and Jaffe, A.H. and Jaffe, T.R. and Keihanen, E. and Keskitalo, R. and Kisner, T.S. and Kneissl, R. and Knoche, J. and Kunz, M. and Kurki-Suonio, H. and Lahteenmaki, A. and Lamarre, J.-M. and Lasenby, A. and Lawrence, C.R. and Leonardi, R. and Liguori, M. and Lilje, P.B. and Linden-Vornle, M. and Lopez-Caniego, M. and Lubin, P.M. and Maino, D. and Maris, M. and Marshall, D.J. and Martin, P.G. and Martinez-Gonzalez, E. and Masi, S. and Matarrese, S. and Mazzotta, P. and Melchiorri, A. and Mendes, L. and Mennella, A. and Migliaccio, M. and Miville-Deschenes, M.-A. and Moneti, A. and Montier, L. and Morgante, G. and Mortlock, D. and Munshi, D. and Murphy, J.Anthony and Naselsky, P. and Nati, F. and Noviello, F. and Novikov, D. and Novikov, I. and Oppermann, N. and Oxborrow, C.A. and Pagano, L. and Pajot, F. and Paladini, R. and Pasian, F. and Peel, M. and Perdereau, O. 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 Puget, J.-L. and Rachen, J.P. and Reach, W.T. and Reich, W. and Reinecke, M. and Remazeilles, M. and Renault, C. and Rho, J. 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 Savini, G. and Scott, D. and Stolyarov, V. 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 Yvon, D. and Zacchei, A. and Zonca, A. (2016) Planck intermediate results XXXI. Microwave survey of Galactic supernova remnants. Astronomy & Astrophysics, 586 (A134). ISSN 0004-6361

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    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, Sν ∝ ν−α, 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.

    Item Type: Article
    Keywords: Planck Collaboration; ISM: supernova remnants; cosmic rays; radio continuum: ISM;
    Academic Unit: Faculty of Science and Engineering > Experimental Physics
    Item ID: 14305
    Identification Number: https://doi.org/10.1051/0004-6361/201425022
    Depositing User: Dr. Anthony Murphy
    Date Deposited: 07 Apr 2021 14:34
    Journal or Publication Title: Astronomy & Astrophysics
    Publisher: EDP Sciences
    Refereed: Yes
    URI:

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