Herschel-ATLAS: Blazars in the science demonstration phase field

J. Gonzalez-Nuevo; G. de Zotti; P. Andreani; E. Barton; F. Bertoldi; M. Birkinshaw; L. Bonavera; S. Buttiglione; J. Cooke; A. Cooray; G. Danese; L. Dunne; S. Eales; L. Fan; M.J. Jarvis; H-R. Kloeckner; E. Hatziminaoglou; D. Herranz; D.H. Hughes; A. Lapi; A. Lawrence; L. Leeuw; M. Lopez-Caniego; M. Massardi; T. Mauch; M. Michalowski; M. Negrello; S. Rawlings; G. Rodighiero; S. Samui; S. Serjeant; J. Vieira; G.J. White; A. Amblard; R. Auld; M. Baes; D. Bonfield; D. Burgarella; A. Cava; D. Clements; A. Dariush; S. Dye; D. Frayer; J. Fritz; E. Ibar; R.J. Ivison; G. Lagache; S. Maddox; E. Pascale; M. Pohlen; E. Rigby; B. Sibthorpe; Daniel Smith; P. Temi; M.A. Thompson; I. Valtchanov; A. Verma

doi:10.1051/0004-6361/201014637

Herschel-ATLAS: Blazars in the science demonstration phase field

J. Gonzalez-Nuevo, G. de Zotti, P. Andreani, E. Barton, F. Bertoldi, M. Birkinshaw, L. Bonavera, S. Buttiglione, J. Cooke, A. Cooray, G. Danese, L. Dunne, S. Eales, L. Fan, M.J. Jarvis, H-R. Kloeckner, E. Hatziminaoglou, D. Herranz, D.H. Hughes, A. LapiA. Lawrence, L. Leeuw, M. Lopez-Caniego, M. Massardi, T. Mauch, M. Michalowski, M. Negrello, S. Rawlings, G. Rodighiero, S. Samui, S. Serjeant, J. Vieira, G.J. White, A. Amblard, R. Auld, M. Baes, D. Bonfield, D. Burgarella, A. Cava, D. Clements, A. Dariush, S. Dye, D. Frayer, J. Fritz, E. Ibar, R.J. Ivison, G. Lagache, S. Maddox, E. Pascale, M. Pohlen, E. Rigby, B. Sibthorpe, Daniel Smith, P. Temi, M.A. Thompson, I. Valtchanov, A. Verma

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Abstract

To investigate the poorly constrained sub-mm counts and spectral properties of blazars we searched for these in the Herschel-ATLAS (H-ATLAS) science demonstration phase (SDP) survey catalog.  We cross-matched 500 μm sources brighter than 50 mJy with the FIRST radio catalogue. We found two blazars, both previously known. Our study is among the first blind blazar searches at sub-mm wavelengths, i.e., in the spectral regime where little is still known about the blazar SEDs, but where the synchrotron peak of the most luminous blazars is expected to occur. Our early results are consistent with educated extrapolations of lower frequency counts and question indications of substantial spectral curvature downwards and of spectral upturns at mm wavelengths. One of the two blazars is identified with a Fermi/LAT γ-ray source and a WMAP source. The physical parameters of the two blazars are briefly discussed. These observations demonstrate that the H-ATLAS survey will provide key information about the physics of blazars and their contribution to sub-mm counts.

Original language	English
Journal	Astronomy & Astrophysics
Volume	518
Issue number	7-8
DOIs	https://doi.org/10.1051/0004-6361/201014637
Publication status	Published - 2010

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Gonzalez-Nuevo, J., de Zotti, G., Andreani, P., Barton, E., Bertoldi, F., Birkinshaw, M., Bonavera, L., Buttiglione, S., Cooke, J., Cooray, A., Danese, G., Dunne, L., Eales, S., Fan, L., Jarvis, M. J., Kloeckner, H.-R., Hatziminaoglou, E., Herranz, D., Hughes, D. H., ... Verma, A. (2010). Herschel-ATLAS: Blazars in the science demonstration phase field. Astronomy & Astrophysics, 518(7-8). https://doi.org/10.1051/0004-6361/201014637

@article{9df12c1e30e04d31b8c1ae0e36205b03,

title = "Herschel-ATLAS: Blazars in the science demonstration phase field",

abstract = "To investigate the poorly constrained sub-mm counts and spectral properties of blazars we searched for these in the Herschel-ATLAS (H-ATLAS) science demonstration phase (SDP) survey catalog.  We cross-matched 500 μm sources brighter than 50 mJy with the FIRST radio catalogue. We found two blazars, both previously known. Our study is among the first blind blazar searches at sub-mm wavelengths, i.e., in the spectral regime where little is still known about the blazar SEDs, but where the synchrotron peak of the most luminous blazars is expected to occur. Our early results are consistent with educated extrapolations of lower frequency counts and question indications of substantial spectral curvature downwards and of spectral upturns at mm wavelengths. One of the two blazars is identified with a Fermi/LAT γ-ray source and a WMAP source. The physical parameters of the two blazars are briefly discussed. These observations demonstrate that the H-ATLAS survey will provide key information about the physics of blazars and their contribution to sub-mm counts.",

author = "J. Gonzalez-Nuevo and \{de Zotti\}, G. and P. Andreani and E. Barton and F. Bertoldi and M. Birkinshaw and L. Bonavera and S. Buttiglione and J. Cooke and A. Cooray and G. Danese and L. Dunne and S. Eales and L. Fan and M.J. Jarvis and H-R. Kloeckner and E. Hatziminaoglou and D. Herranz and D.H. Hughes and A. Lapi and A. Lawrence and L. Leeuw and M. Lopez-Caniego and M. Massardi and T. Mauch and M. Michalowski and M. Negrello and S. Rawlings and G. Rodighiero and S. Samui and S. Serjeant and J. Vieira and G.J. White and A. Amblard and R. Auld and M. Baes and D. Bonfield and D. Burgarella and A. Cava and D. Clements and A. Dariush and S. Dye and D. Frayer and J. Fritz and E. Ibar and R.J. Ivison and G. Lagache and S. Maddox and E. Pascale and M. Pohlen and E. Rigby and B. Sibthorpe and Daniel Smith and P. Temi and M.A. Thompson and I. Valtchanov and A. Verma",

note = "Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory",

year = "2010",

doi = "10.1051/0004-6361/201014637",

language = "English",

volume = "518",

journal = "Astronomy \& Astrophysics",

issn = "0004-6361",

publisher = "EDP Sciences",

number = "7-8",

}

Gonzalez-Nuevo, J, de Zotti, G, Andreani, P, Barton, E, Bertoldi, F, Birkinshaw, M, Bonavera, L, Buttiglione, S, Cooke, J, Cooray, A, Danese, G, Dunne, L, Eales, S, Fan, L, Jarvis, MJ, Kloeckner, H-R, Hatziminaoglou, E, Herranz, D, Hughes, DH, Lapi, A, Lawrence, A, Leeuw, L, Lopez-Caniego, M, Massardi, M, Mauch, T, Michalowski, M, Negrello, M, Rawlings, S, Rodighiero, G, Samui, S, Serjeant, S, Vieira, J, White, GJ, Amblard, A, Auld, R, Baes, M, Bonfield, D, Burgarella, D, Cava, A, Clements, D, Dariush, A, Dye, S, Frayer, D, Fritz, J, Ibar, E, Ivison, RJ, Lagache, G, Maddox, S, Pascale, E, Pohlen, M, Rigby, E, Sibthorpe, B, Smith, D, Temi, P, Thompson, MA, Valtchanov, I & Verma, A 2010, 'Herschel-ATLAS: Blazars in the science demonstration phase field', Astronomy & Astrophysics, vol. 518, no. 7-8. https://doi.org/10.1051/0004-6361/201014637

TY - JOUR

T1 - Herschel-ATLAS: Blazars in the science demonstration phase field

AU - Gonzalez-Nuevo, J.

AU - de Zotti, G.

AU - Andreani, P.

AU - Barton, E.

AU - Bertoldi, F.

AU - Birkinshaw, M.

AU - Bonavera, L.

AU - Buttiglione, S.

AU - Cooke, J.

AU - Cooray, A.

AU - Danese, G.

AU - Dunne, L.

AU - Eales, S.

AU - Fan, L.

AU - Jarvis, M.J.

AU - Kloeckner, H-R.

AU - Hatziminaoglou, E.

AU - Herranz, D.

AU - Hughes, D.H.

AU - Lapi, A.

AU - Lawrence, A.

AU - Leeuw, L.

AU - Lopez-Caniego, M.

AU - Massardi, M.

AU - Mauch, T.

AU - Michalowski, M.

AU - Negrello, M.

AU - Rawlings, S.

AU - Rodighiero, G.

AU - Samui, S.

AU - Serjeant, S.

AU - Vieira, J.

AU - White, G.J.

AU - Amblard, A.

AU - Auld, R.

AU - Baes, M.

AU - Bonfield, D.

AU - Burgarella, D.

AU - Cava, A.

AU - Clements, D.

AU - Dariush, A.

AU - Dye, S.

AU - Frayer, D.

AU - Fritz, J.

AU - Ibar, E.

AU - Ivison, R.J.

AU - Lagache, G.

AU - Maddox, S.

AU - Pascale, E.

AU - Pohlen, M.

AU - Rigby, E.

AU - Sibthorpe, B.

AU - Smith, Daniel

AU - Temi, P.

AU - Thompson, M.A.

AU - Valtchanov, I.

AU - Verma, A.

N1 - Original article can be found at: http://www.aanda.org/ Copyright The European Southern Observatory

PY - 2010

Y1 - 2010

N2 - To investigate the poorly constrained sub-mm counts and spectral properties of blazars we searched for these in the Herschel-ATLAS (H-ATLAS) science demonstration phase (SDP) survey catalog.  We cross-matched 500 μm sources brighter than 50 mJy with the FIRST radio catalogue. We found two blazars, both previously known. Our study is among the first blind blazar searches at sub-mm wavelengths, i.e., in the spectral regime where little is still known about the blazar SEDs, but where the synchrotron peak of the most luminous blazars is expected to occur. Our early results are consistent with educated extrapolations of lower frequency counts and question indications of substantial spectral curvature downwards and of spectral upturns at mm wavelengths. One of the two blazars is identified with a Fermi/LAT γ-ray source and a WMAP source. The physical parameters of the two blazars are briefly discussed. These observations demonstrate that the H-ATLAS survey will provide key information about the physics of blazars and their contribution to sub-mm counts.

AB - To investigate the poorly constrained sub-mm counts and spectral properties of blazars we searched for these in the Herschel-ATLAS (H-ATLAS) science demonstration phase (SDP) survey catalog.  We cross-matched 500 μm sources brighter than 50 mJy with the FIRST radio catalogue. We found two blazars, both previously known. Our study is among the first blind blazar searches at sub-mm wavelengths, i.e., in the spectral regime where little is still known about the blazar SEDs, but where the synchrotron peak of the most luminous blazars is expected to occur. Our early results are consistent with educated extrapolations of lower frequency counts and question indications of substantial spectral curvature downwards and of spectral upturns at mm wavelengths. One of the two blazars is identified with a Fermi/LAT γ-ray source and a WMAP source. The physical parameters of the two blazars are briefly discussed. These observations demonstrate that the H-ATLAS survey will provide key information about the physics of blazars and their contribution to sub-mm counts.

U2 - 10.1051/0004-6361/201014637

DO - 10.1051/0004-6361/201014637

M3 - Article

SN - 0004-6361

VL - 518

JO - Astronomy & Astrophysics

JF - Astronomy & Astrophysics

IS - 7-8

ER -

Herschel-ATLAS: Blazars in the science demonstration phase field

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