Planck intermediate results XLV. Radio spectra of northern extragalactic radio sources

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Title: Planck intermediate results XLV. Radio spectra of northern extragalactic radio sources
Authors: Ade, PAR
Aghanim, N
Aller, HD
Aller, MF
Arnaud, M
Aumont, J
Baccigalupi, C
Banday, AJ
Barreiro, RB
Bartolo, N
Battaner, E
Wehrle, AE
Wehus, IK
Yvon, D
Zacchei, A
Zonca, A
Borrill, J
Bouchet, FR
Burigana, C
Calabrese, E
Catalano, A
Mandolesi, N
Chiang, HC
Christensen, PR
Clements, DL
Colomb, LPL
Couchot, F
Crill, BP
Curto, A
Cuttaia, F
Danese, L
Davies, RD
Maris, M
Davis, RJ
De Bernardis, P
De Rosa, A
De Zotti, G
Delabrouille, J
Dickinson, C
Diego, JM
Dole, H
Donzelli, S
Dore, O
Martini, PG
Ducout, A
Dupac, X
Efstathiou, G
Elsner, F
Eriksen, HK
Finelli, F
Forni, O
Frailis, M
Fraisse, AA
Franceschi, E
Martinez-Gonzalez, E
Galeotta, S
Galli, S
Ganga, K
Giard, M
Giraud-Heraud, Y
Gjerlow, E
Gonzalez-Nuevo, J
Gorski, KM
Gruppuso, A
Gurwel, MA
Masi, S
Hansen, FK
Harrison, DL
Henrot-Versille, S
Hernandez-Monteagudo, C
Hildebrandt, SR
Hobson, M
Hornstrup, A
Hovatta, T
Hovest, W
Huffenberger, KM
Matarrese, S
Hurier, G
Jaffe, AH
Jaffe, TR
Jarvela, E
Keihanen, E
Keskitalo, R
Kisner, TS
Kneiss, R
Knoche, J
Kunz, M
Max-Moerbeck, W
Kurki-Suonio, H
Lahteenmaki, A
Lamarre, J-M
Lasenby, A
Lattanzi, M
Lawrence, CR
Leonardi, R
Levrier, F
Liguori, M
Lilje, PB
Meinhold, PR
Linden-Vornle, M
Lopez-Caniego, M
Lubin, PM
Macias-Perez, JF
Maffei, B
Maino, D
Melchiorri, A
Mennella, A
Benabed, K
Migliaccio, M
Millgaliev, M
Miville-Deschenes, M-A
Moneti, A
Montier, L
Morgante, G
Mortlock, D
Munshi, D
Murphy, JA
Nati, F
Benoit-Levy, A
Natoli, P
Nieppola, E
Noviello, F
Novikov, D
Novikov, I
Pagano, L
Pajot, F
Paoletti, D
Partridge, B
Pasian, F
Bernard, J-P
Pearson, TJ
Perdereau, O
Perotto, L
Pettorino, V
Piacentini, F
Piat, M
Pierpaoli, E
Plaszczynski, S
Pointecouteau, E
Polenta, G
Bersanelli, M
Pratt, GW
Ramakrishnan, V
Rastorgueva-Foi, EA
Readhead, ACS
Reinecke, M
Remazeilles, M
Renault, C
Renzi, A
Richards, JL
Ristorcelli, I
Bielewicz, P
Rocha, G
Rossetti, M
Roudier, G
Rubino-Martin, JA
Rusholme, B
Sandri, M
Savelainen, M
Savini, G
Scott, D
Sotnikova, Y
Bonaldi, A
Stolyarov, V
Sunyaev, R
Sutton, D
Suur-Uski, A-S
Sygnet, J-F
Tammi, J
Tauber, JA
Terenzi, L
Toffolatti, L
Tomasi, M
Bonavera, L
Tornikoski, M
Tristram, M
Tucci, M
Turler, M
Valenziano, L
Valiviita, J
Valtaoja, E
Van Tent, B
Vielva, P
Ville, F
Bond, JR
Wade, LA
Item Type: Journal Article
Abstract: Continuum spectra covering centimetre to submillimetre wavelengths are presented for a northern sample of 104 extragalactic radio sources, mainly active galactic nuclei, based on four-epoch Planck data. The nine Planck frequencies, from 30 to 857 GHz, are complemented by a set of simultaneous ground-based radio observations between 1.1 and 37 GHz. The single-survey Planck data confirm that the flattest high-frequency radio spectral indices are close to zero, indicating that the original accelerated electron energy spectrum is much harder than commonly thought, with power-law index around 1.5 instead of the canonical 2.5. The radio spectra peak at high frequencies and exhibit a variety of shapes. For a small set of low-z sources, we find a spectral upturn at high frequencies, indicating the presence of intrinsic cold dust. Variability can generally be approximated by achromatic variations, while sources with clear signatures of evolving shocks appear to be limited to the strongest outbursts.
Issue Date: 12-Dec-2016
Date of Acceptance: 4-Apr-2016
ISSN: 0004-6361
Publisher: EDP Sciences
Journal / Book Title: Astronomy and Astrophysics
Volume: 596
Copyright Statement: © ESO, 2016
Sponsor/Funder: Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council (STFC)
Science and Technology Facilities Council [2006-2012]
Funder's Grant Number: ST/F01239X/1
Keywords: Science & Technology
Physical Sciences
Astronomy & Astrophysics
galaxies: active
galaxies: general
radio continuum: galaxies
QUASAR 3C 454.3
0201 Astronomical And Space Sciences
Publication Status: Published
Open Access location:
Article Number: ARTN A106
Appears in Collections:Physics

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