Veritas observations of six bright, hard-spectrum Fermi-lat blazars

E. Aliu; S. Archambault; T. Arlen; T. Aune; M. Beilicke; W. Benbow; M. Böttcher; A. Bouvier; J. H. Buckley; V. Bugaev; A. Cesarini; L. Ciupik; E. Collins-Hughes; M. P. Connolly; W. Cui; R. Dickherber; C. Duke; J. Dumm; M. Errando; A. Falcone; S. Federici; Q. Feng; J. P. Finley; G. Finnegan; L. Fortson; A. Furniss; N. Galante; D. Gall; S. Godambe; S. Griffin; J. Grube; G. Gyuk; D. Hanna; J. Holder; H. Huan; P. Kaaret; N. Karlsson; Y. Khassen; D. Kieda; H. Krawczynski; F. Krennrich; K. Lee; A. S. Madhavan; G. Maier; P. Majumdar; S. McArthur; A. McCann; P. Moriarty; R. Mukherjee; T. Nelson

doi:10.1088/0004-637X/759/2/102

Veritas observations of six bright, hard-spectrum Fermi-lat blazars

E. Aliu, S. Archambault, T. Arlen, T. Aune, M. Beilicke, W. Benbow, M. Böttcher, A. Bouvier, J. H. Buckley, V. Bugaev, A. Cesarini, L. Ciupik, E. Collins-Hughes, M. P. Connolly, W. Cui, R. Dickherber, C. Duke, J. Dumm, M. Errando, A. FalconeS. Federici, Q. Feng, J. P. Finley, G. Finnegan, L. Fortson, A. Furniss, N. Galante, D. Gall, S. Godambe, S. Griffin, J. Grube, G. Gyuk, D. Hanna, J. Holder, H. Huan, P. Kaaret, N. Karlsson, Y. Khassen, D. Kieda, H. Krawczynski, F. Krennrich, K. Lee, A. S. Madhavan, G. Maier, P. Majumdar, S. McArthur, A. McCann, P. Moriarty, R. Mukherjee, T. Nelson

Physics and Astronomy (Twin Cities)

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9 Scopus citations

Abstract

We report on VERITAS very high energy (VHE; E ≥ 100GeV) observations of six blazars selected from the Fermi Large Area Telescope First Source Catalog (1FGL). The gamma-ray emission from 1FGL sources was extrapolated up to the VHE band, taking gamma-ray absorption by the extragalactic background light into account. This allowed the selection of six bright, hard-spectrum blazars that were good candidate TeV emitters. Spectroscopic redshift measurements were attempted with the Keck Telescope for the targets without Sloan Digital Sky Survey spectroscopic data. No VHE emission is detected during the observations of the six sources described here. Corresponding TeV upper limits are presented, along with contemporaneous Fermi observations and non-concurrent Swift UVOT and X-Ray Telescope data. The blazar broadband spectral energy distributions (SEDs) are assembled and modeled with a single-zone synchrotron self-Compton model. The SED built for each of the six blazars shows a synchrotron peak bordering between the intermediate- and high-spectrum-peak classifications, with four of the six resulting in particle-dominated emission regions.

Original language	English (US)
Article number	102
Journal	Astrophysical Journal
Volume	759
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/759/2/102
State	Published - Nov 10 2012

Keywords

BL Lacertae objects: general
gamma rays: galaxies

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Aliu, E., Archambault, S., Arlen, T., Aune, T., Beilicke, M., Benbow, W., Böttcher, M., Bouvier, A., Buckley, J. H., Bugaev, V., Cesarini, A., Ciupik, L., Collins-Hughes, E., Connolly, M. P., Cui, W., Dickherber, R., Duke, C., Dumm, J., Errando, M., ... Nelson, T. (2012). Veritas observations of six bright, hard-spectrum Fermi-lat blazars. Astrophysical Journal, 759(2), Article 102. https://doi.org/10.1088/0004-637X/759/2/102

Aliu, E, Archambault, S, Arlen, T, Aune, T, Beilicke, M, Benbow, W, Böttcher, M, Bouvier, A, Buckley, JH, Bugaev, V, Cesarini, A, Ciupik, L, Collins-Hughes, E, Connolly, MP, Cui, W, Dickherber, R, Duke, C, Dumm, J, Errando, M, Falcone, A, Federici, S, Feng, Q, Finley, JP, Finnegan, G, Fortson, L, Furniss, A, Galante, N, Gall, D, Godambe, S, Griffin, S, Grube, J, Gyuk, G, Hanna, D, Holder, J, Huan, H, Kaaret, P, Karlsson, N, Khassen, Y, Kieda, D, Krawczynski, H, Krennrich, F, Lee, K, Madhavan, AS, Maier, G, Majumdar, P, McArthur, S, McCann, A, Moriarty, P, Mukherjee, R & Nelson, T 2012, 'Veritas observations of six bright, hard-spectrum Fermi-lat blazars', Astrophysical Journal, vol. 759, no. 2, 102. https://doi.org/10.1088/0004-637X/759/2/102

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abstract = "We report on VERITAS very high energy (VHE; E ≥ 100GeV) observations of six blazars selected from the Fermi Large Area Telescope First Source Catalog (1FGL). The gamma-ray emission from 1FGL sources was extrapolated up to the VHE band, taking gamma-ray absorption by the extragalactic background light into account. This allowed the selection of six bright, hard-spectrum blazars that were good candidate TeV emitters. Spectroscopic redshift measurements were attempted with the Keck Telescope for the targets without Sloan Digital Sky Survey spectroscopic data. No VHE emission is detected during the observations of the six sources described here. Corresponding TeV upper limits are presented, along with contemporaneous Fermi observations and non-concurrent Swift UVOT and X-Ray Telescope data. The blazar broadband spectral energy distributions (SEDs) are assembled and modeled with a single-zone synchrotron self-Compton model. The SED built for each of the six blazars shows a synchrotron peak bordering between the intermediate- and high-spectrum-peak classifications, with four of the six resulting in particle-dominated emission regions.",

keywords = "BL Lacertae objects: general, gamma rays: galaxies",

author = "E. Aliu and S. Archambault and T. Arlen and T. Aune and M. Beilicke and W. Benbow and M. B{\"o}ttcher and A. Bouvier and Buckley, {J. H.} and V. Bugaev and A. Cesarini and L. Ciupik and E. Collins-Hughes and Connolly, {M. P.} and W. Cui and R. Dickherber and C. Duke and J. Dumm and M. Errando and A. Falcone and S. Federici and Q. Feng and Finley, {J. P.} and G. Finnegan and L. Fortson and A. Furniss and N. Galante and D. Gall and S. Godambe and S. Griffin and J. Grube and G. Gyuk and D. Hanna and J. Holder and H. Huan and P. Kaaret and N. Karlsson and Y. Khassen and D. Kieda and H. Krawczynski and F. Krennrich and K. Lee and Madhavan, {A. S.} and G. Maier and P. Majumdar and S. McArthur and A. McCann and P. Moriarty and R. Mukherjee and T. Nelson",

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T1 - Veritas observations of six bright, hard-spectrum Fermi-lat blazars

AU - Aliu, E.

AU - Archambault, S.

AU - Arlen, T.

AU - Aune, T.

AU - Beilicke, M.

AU - Benbow, W.

AU - Böttcher, M.

AU - Bouvier, A.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Cesarini, A.

AU - Ciupik, L.

AU - Collins-Hughes, E.

AU - Connolly, M. P.

AU - Cui, W.

AU - Dickherber, R.

AU - Duke, C.

AU - Dumm, J.

AU - Errando, M.

AU - Falcone, A.

AU - Federici, S.

AU - Feng, Q.

AU - Finley, J. P.

AU - Finnegan, G.

AU - Fortson, L.

AU - Furniss, A.

AU - Galante, N.

AU - Gall, D.

AU - Godambe, S.

AU - Griffin, S.

AU - Grube, J.

AU - Gyuk, G.

AU - Hanna, D.

AU - Holder, J.

AU - Huan, H.

AU - Kaaret, P.

AU - Karlsson, N.

AU - Khassen, Y.

AU - Kieda, D.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - Lee, K.

AU - Madhavan, A. S.

AU - Maier, G.

AU - Majumdar, P.

AU - McArthur, S.

AU - McCann, A.

AU - Moriarty, P.

AU - Mukherjee, R.

AU - Nelson, T.

PY - 2012/11/10

Y1 - 2012/11/10

N2 - We report on VERITAS very high energy (VHE; E ≥ 100GeV) observations of six blazars selected from the Fermi Large Area Telescope First Source Catalog (1FGL). The gamma-ray emission from 1FGL sources was extrapolated up to the VHE band, taking gamma-ray absorption by the extragalactic background light into account. This allowed the selection of six bright, hard-spectrum blazars that were good candidate TeV emitters. Spectroscopic redshift measurements were attempted with the Keck Telescope for the targets without Sloan Digital Sky Survey spectroscopic data. No VHE emission is detected during the observations of the six sources described here. Corresponding TeV upper limits are presented, along with contemporaneous Fermi observations and non-concurrent Swift UVOT and X-Ray Telescope data. The blazar broadband spectral energy distributions (SEDs) are assembled and modeled with a single-zone synchrotron self-Compton model. The SED built for each of the six blazars shows a synchrotron peak bordering between the intermediate- and high-spectrum-peak classifications, with four of the six resulting in particle-dominated emission regions.

AB - We report on VERITAS very high energy (VHE; E ≥ 100GeV) observations of six blazars selected from the Fermi Large Area Telescope First Source Catalog (1FGL). The gamma-ray emission from 1FGL sources was extrapolated up to the VHE band, taking gamma-ray absorption by the extragalactic background light into account. This allowed the selection of six bright, hard-spectrum blazars that were good candidate TeV emitters. Spectroscopic redshift measurements were attempted with the Keck Telescope for the targets without Sloan Digital Sky Survey spectroscopic data. No VHE emission is detected during the observations of the six sources described here. Corresponding TeV upper limits are presented, along with contemporaneous Fermi observations and non-concurrent Swift UVOT and X-Ray Telescope data. The blazar broadband spectral energy distributions (SEDs) are assembled and modeled with a single-zone synchrotron self-Compton model. The SED built for each of the six blazars shows a synchrotron peak bordering between the intermediate- and high-spectrum-peak classifications, with four of the six resulting in particle-dominated emission regions.

KW - BL Lacertae objects: general

KW - gamma rays: galaxies

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UR - http://www.scopus.com/inward/citedby.url?scp=84868122321&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/759/2/102

DO - 10.1088/0004-637X/759/2/102

M3 - Article

AN - SCOPUS:84868122321

SN - 0004-637X

VL - 759

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 102

ER -

Veritas observations of six bright, hard-spectrum Fermi-lat blazars

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