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29 March 2024
 
  » arxiv » 1409.5746

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Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants
M. Arnaud ; M. Ashdown ; F. Atrio-Barandela ; J. Aumont ; C. Baccigalupi ; A. J. Banday ; R. B. Barreiro ; E. Battaner ; K. Benabed ; A. Benoit-Lévy ; J.-P. Bernard ; M. Bersanelli ; P. Bielewicz ; J. Bobin ; J. R. Bond ; J. Borrill ; F. R. Bouchet ; C. L. Brogan ; C. Burigana ; J.-F. Cardoso ; A. Catalano ; A. Chamballu ; H. C. Chiang ; P. R. Christensen ; S. Colombi ; L. P. L. Colombo ; B. P. Crill ; A. Curto ; F. Cuttaia ; R. D. Davies ; R. J. Davis ; P. de Bernardis ; A. de Rosa ; G. de Zotti ; J. Delabrouille ; F.-X. Désert ; C. Dickinson ; J. M. Diego ; S. Donzelli ; O. Doré ; X. Dupac ; T. A. Enßlin ; H. K. Eriksen ; F. Finelli ; O. Forni ; M. Frailis ; E. Franceschi ; S. Galeotta ; K. Ganga ; M. Giard ; Y. Giraud-Héraud ; J. González-Nuevo ; K. M. Górski ; D. A. Green ; A. Gregorio ; A. Gruppuso ; F. K. Hansen ; D. L. Harrison ; C. Hernández-Monteagudo ; D. Herranz ; S. R. Hildebrandt ; W. A. Holmes ; K. M. Huffenberger ; A. H. Jaffe ; T. R. Jaffe ; E. Keihänen ; R. Keskitalo ; T. S. Kisner ; R. Kneissl ; J. Knoche ; M. Kunz ; H. Kurki-Suonio ; A. Lähteenmäki ; J.-M. Lamarre ; A. Lasenby ; C. R. Lawrence ; R. Leonardi ; M. Liguori ; P. B. Lilje ; M. Linden-Vørnle ; P. M. Lubin ; D. Maino ; D. J. Marshall ; P. G. Martin ; E. Martínez-González ; S. Masi ; S. Matarrese ; P. Mazzotta ; A. Melchiorri ; L. Mendes ; A. Mennella ; M. Migliaccio ; M.-A. Miville-Deschênes ; A. Moneti ; L. Montier ; G. Morgante ; D. Mortlock ; D. Munshi ; J. A. Murphy ; P. Naselsky ; F. Nati ; F. Noviello ; D. Novikov ; I. Novikov ; N. Oppermann ; C. A. Oxborrow ; L. Pagano ; F. Pajot ; R. Paladini ; F. Pasian ; M. Peel ; O. Perdereau ; F. Perrotta ; F. Piacentini ; M. Piat ; D. Pietrobon ; S. Plaszczynski ; E. Pointecouteau ; G. Polenta ; L. Popa ; G. W. Pratt ; J.-L. Puget ; J. P. Rachen ; W. T. Reach ; W. Reich ; M. Reinecke ; M. Remazeilles ; C. Renault ; J. Rho ; S. Ricciardi ; T. Riller ; I. Ristorcelli ; G. Rocha ; C. Rosset ; G. Roudier ; B. Rusholme ; M. Sandri ; G. Savini ; D. Scott ; V. Stolyarov ; D. Sutton ; A.-S. Suur-Uski ; J.-F. Sygnet ; J. A. Tauber ; L. Terenzi ; L. Toffolatti ; M. Tomasi ; M. Tristram ; M. Tucci ; G. Umana ; L. Valenziano ; B. Van Tent ; P. Vielva ; F. Villa ; L. A. Wade ; D. Yvon ; A. Zacchei ; A. Zonca ;
Date 23 Sep 2014
AbstractThe all-sky Planck survey in 9 frequency bands was used to search for emission from all 274 known Galactic supernova remnants. Of these, 17 were detected in at least two Planck frequencies. The radio-through-microwave spectral energy distributions were compiled to determine the emission mechanism for microwave emission. In only one case, IC 443, is the high-frequency emission clearly from dust associated with the supernova remnant. In all cases, the low-frequency emission is from synchrotron radiation. A single power law, as predicted for a population of relativistic particles with energy distribution that extends continuously to high energies, 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, $S_ upropto u^{-alpha}$, with the spectral index, $alpha$, with the spectral index, alpha, increasing by 0.5 to 1 above a break frequency in the range 10 to 60 GHz. The break could be due to synchrotron losses.
Source arXiv, 1409.5746
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