Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants
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 emission 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. 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, , with the spectral index, alpha, increasing by 0.5-1 above a break frequency in the range 10-60 GHz. The break could be due to synchrotron losses.
Keywords
Cite
@article{arxiv.1409.5746,
title = {Planck intermediate results. XXXI. Microwave survey of Galactic supernova remnants},
author = {Planck Collaboration and M. Arnaud and M. Ashdown and F. Atrio-Barandela and J. Aumont and C. Baccigalupi and A. J. Banday and R. B. Barreiro and E. Battaner and K. Benabed and A. Benoit-Lévy and J. -P. Bernard and M. Bersanelli and P. Bielewicz and J. Bobin and J. R. Bond and J. Borrill and F. R. Bouchet and C. L. Brogan and C. Burigana and J. -F. Cardoso and A. Catalano and A. Chamballu and H. C. Chiang and P. R. Christensen and S. Colombi and L. P. L. Colombo and B. P. Crill and A. Curto and F. Cuttaia and R. D. Davies and R. J. Davis and P. de Bernardis and A. de Rosa and G. de Zotti and J. Delabrouille and F. -X. Désert and C. Dickinson and J. M. Diego and S. Donzelli and O. Doré and X. Dupac and T. A. Enßlin and H. K. Eriksen and F. Finelli and O. Forni and M. Frailis and A. A. Fraisse and E. Franceschi and S. Galeotta and K. Ganga and M. Giard and Y. Giraud-Héraud and J. González-Nuevo and K. M. Górski and A. Gregorio and A. Gruppuso and F. K. Hansen and D. L. Harrison and C. Hernández-Monteagudo and D. Herranz and S. R. Hildebrandt and M. Hobson and W. A. Holmes and K. M. Huffenberger and A. H. Jaffe and T. R. Jaffe and E. Keihänen and R. Keskitalo and T. S. Kisner and R. Kneissl and J. Knoche and M. Kunz and H. Kurki-Suonio and A. Lähteenmäki and J. -M. Lamarre and A. Lasenby and C. R. Lawrence and R. Leonardi and M. Liguori and P. B. Lilje and M. Linden-Vørnle and M. López-Caniego and P. M. Lubin and D. Maino and M. Maris and D. J. Marshall and P. G. Martin and E. Martínez-González and S. Masi and S. Matarrese and P. Mazzotta and A. Melchiorri and L. Mendes and A. Mennella and M. Migliaccio and M. -A. Miville-Deschênes and A. Moneti and L. Montier and G. Morgante and D. Mortlock and D. Munshi and J. A. Murphy and P. Naselsky and F. Nati and F. Noviello and D. Novikov and I. Novikov and N. Oppermann and C. A. Oxborrow and L. Pagano and F. Pajot and R. Paladini and F. Pasian and M. Peel and O. Perdereau and F. Perrotta and F. Piacentini and M. Piat and D. Pietrobon and S. Plaszczynski and E. Pointecouteau and G. Polenta and L. Popa and G. W. Pratt and J. -L. Puget and J. P. Rachen and W. T. Reach and W. Reich and M. Reinecke and M. Remazeilles and C. Renault and J. Rho and S. Ricciardi and T. Riller and I. Ristorcelli and G. Rocha and C. Rosset and G. Roudier and B. Rusholme and M. Sandri and G. Savini and D. Scott and V. Stolyarov and D. Sutton and A. -S. Suur-Uski and J. -F. Sygnet and J. A. Tauber and L. Terenzi and L. Toffolatti and M. Tomasi and M. Tristram and M. Tucci and G. Umana and L. Valenziano and J. Valiviita and B. Van Tent and P. Vielva and F. Villa and L. A. Wade and D. Yvon and A. Zacchei and A. Zonca},
journal= {arXiv preprint arXiv:1409.5746},
year = {2016}
}