A three-year multi-wavelength study of the very-high-energy γ-ray blazar 1es 0229+200

E. Aliu, S. Archambault, T. Arlen, T. Aune, B. Behera, M. Beilicke, W. Benbow, K. Berger, R. Bird, A. Bouvier, J. H. Buckley, V. Bugaev, K. Byrum, M. Cerruti, X. Chen, L. Ciupik, M. P. Connolly, W. Cui, C. Duke, J. DummM. Errando, Abraham David Falcone, S. Federici, Q. Feng, J. P. Finley, H. Fleischhack, P. Fortin, L. Fortson, A. Furniss, N. Galante, G. H. Gillanders, S. Griffin, S. T. Griffiths, J. Grube, G. Gyuk, D. Hanna, J. Holder, G. Hughes, T. B. Humensky, C. A. Johnson, P. Kaaret, M. Kertzman, Y. Khassen, D. Kieda, H. Krawczynski, F. Krennrich, M. J. Lang, A. S. Madhavan, G. Maier, P. Majumdar, S. McArthur, A. McCann, K. Meagher, J. Millis, P. Moriarty, R. Mukherjee, D. Nieto, A. O'Faoláin De Bhróithe, R. A. Ong, A. N. Otte, N. Park, J. S. Perkins, M. Pohl, A. Popkow, H. Prokoph, J. Quinn, K. Ragan, L. C. Reyes, P. T. Reynolds, G. T. Richards, E. Roache, G. H. Sembroski, A. W. Smith, D. Staszak, I. Telezhinsky, M. Theiling, A. Varlotta, V. V. Vassiliev, S. Vincent, S. P. Wakely, T. C. Weekes, A. Weinstein, R. Welsing, D. A. Williams, A. Zajczyk, B. Zitzer

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Abstract

The high-frequency-peaked BL Lacertae object 1ES 0229+200 is a relatively distant (z = 0.1396), hard-spectrum (Γ 2.5), very-high-energy (VHE; E > 100 GeV) emitting γ-ray blazar. VHE measurements of this active galactic nucleus have been used to place constraints on the intensity of the extragalactic background light and the intergalactic magnetic field (IGMF). A multi-wavelength study of this object centered around VHE observations by Very Energetic Radiation Imaging Telescope Array System (VERITAS) is presented. This study obtained, over a period of three years, an 11.7 standard deviation detection and an average integral flux F(E > 300 GeV) = (23.3 ± 2.8stat ± 5.8sys) × 10-9 photons m-2 s -1, or 1.7% of the Crab Nebula's flux (assuming the Crab Nebula spectrum measured by H.E.S.S). Supporting observations from Swift and RXTE are analyzed. The Swift observations are combined with previously published Fermi observations and the VHE measurements to produce an overall spectral energy distribution which is then modeled assuming one-zone synchrotron-self-Compton emission. The χ2 probability of the TeV flux being constant is 1.6%. This, when considered in combination with measured variability in the X-ray band, and the demonstrated variability of many TeV blazars, suggests that the use of blazars such as 1ES 0229+200 for IGMF studies may not be straightforward and challenges models that attribute hard TeV spectra to secondary γ-ray production along the line of sight.

Original languageEnglish (US)
Article number13
JournalAstrophysical Journal
Volume782
Issue number1
DOIs
StatePublished - Feb 10 2014

Fingerprint

rays
wavelength
Crab nebula
blazars
crab
wavelengths
magnetic field
energy
BL Lacertae objects
X Ray Timing Explorer
energetics
spectral energy distribution
magnetic fields
active galactic nuclei
line of sight
standard deviation
synchrotrons
telescopes
photons
radiation

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Aliu, E., Archambault, S., Arlen, T., Aune, T., Behera, B., Beilicke, M., ... Zitzer, B. (2014). A three-year multi-wavelength study of the very-high-energy γ-ray blazar 1es 0229+200. Astrophysical Journal, 782(1), [13]. https://doi.org/10.1088/0004-637X/782/1/13
Aliu, E. ; Archambault, S. ; Arlen, T. ; Aune, T. ; Behera, B. ; Beilicke, M. ; Benbow, W. ; Berger, K. ; Bird, R. ; Bouvier, A. ; Buckley, J. H. ; Bugaev, V. ; Byrum, K. ; Cerruti, M. ; Chen, X. ; Ciupik, L. ; Connolly, M. P. ; Cui, W. ; Duke, C. ; Dumm, J. ; Errando, M. ; Falcone, Abraham David ; Federici, S. ; Feng, Q. ; Finley, J. P. ; Fleischhack, H. ; Fortin, P. ; Fortson, L. ; Furniss, A. ; Galante, N. ; Gillanders, G. H. ; Griffin, S. ; Griffiths, S. T. ; Grube, J. ; Gyuk, G. ; Hanna, D. ; Holder, J. ; Hughes, G. ; Humensky, T. B. ; Johnson, C. A. ; Kaaret, P. ; Kertzman, M. ; Khassen, Y. ; Kieda, D. ; Krawczynski, H. ; Krennrich, F. ; Lang, M. J. ; Madhavan, A. S. ; Maier, G. ; Majumdar, P. ; McArthur, S. ; McCann, A. ; Meagher, K. ; Millis, J. ; Moriarty, P. ; Mukherjee, R. ; Nieto, D. ; O'Faoláin De Bhróithe, A. ; Ong, R. A. ; Otte, A. N. ; Park, N. ; Perkins, J. S. ; Pohl, M. ; Popkow, A. ; Prokoph, H. ; Quinn, J. ; Ragan, K. ; Reyes, L. C. ; Reynolds, P. T. ; Richards, G. T. ; Roache, E. ; Sembroski, G. H. ; Smith, A. W. ; Staszak, D. ; Telezhinsky, I. ; Theiling, M. ; Varlotta, A. ; Vassiliev, V. V. ; Vincent, S. ; Wakely, S. P. ; Weekes, T. C. ; Weinstein, A. ; Welsing, R. ; Williams, D. A. ; Zajczyk, A. ; Zitzer, B. / A three-year multi-wavelength study of the very-high-energy γ-ray blazar 1es 0229+200. In: Astrophysical Journal. 2014 ; Vol. 782, No. 1.
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title = "A three-year multi-wavelength study of the very-high-energy γ-ray blazar 1es 0229+200",
abstract = "The high-frequency-peaked BL Lacertae object 1ES 0229+200 is a relatively distant (z = 0.1396), hard-spectrum (Γ 2.5), very-high-energy (VHE; E > 100 GeV) emitting γ-ray blazar. VHE measurements of this active galactic nucleus have been used to place constraints on the intensity of the extragalactic background light and the intergalactic magnetic field (IGMF). A multi-wavelength study of this object centered around VHE observations by Very Energetic Radiation Imaging Telescope Array System (VERITAS) is presented. This study obtained, over a period of three years, an 11.7 standard deviation detection and an average integral flux F(E > 300 GeV) = (23.3 ± 2.8stat ± 5.8sys) × 10-9 photons m-2 s -1, or 1.7{\%} of the Crab Nebula's flux (assuming the Crab Nebula spectrum measured by H.E.S.S). Supporting observations from Swift and RXTE are analyzed. The Swift observations are combined with previously published Fermi observations and the VHE measurements to produce an overall spectral energy distribution which is then modeled assuming one-zone synchrotron-self-Compton emission. The χ2 probability of the TeV flux being constant is 1.6{\%}. This, when considered in combination with measured variability in the X-ray band, and the demonstrated variability of many TeV blazars, suggests that the use of blazars such as 1ES 0229+200 for IGMF studies may not be straightforward and challenges models that attribute hard TeV spectra to secondary γ-ray production along the line of sight.",
author = "E. Aliu and S. Archambault and T. Arlen and T. Aune and B. Behera and M. Beilicke and W. Benbow and K. Berger and R. Bird and A. Bouvier and Buckley, {J. H.} and V. Bugaev and K. Byrum and M. Cerruti and X. Chen and L. Ciupik and Connolly, {M. P.} and W. Cui and C. Duke and J. Dumm and M. Errando and Falcone, {Abraham David} and S. Federici and Q. Feng and Finley, {J. P.} and H. Fleischhack and P. Fortin and L. Fortson and A. Furniss and N. Galante and Gillanders, {G. H.} and S. Griffin and Griffiths, {S. T.} and J. Grube and G. Gyuk and D. Hanna and J. Holder and G. Hughes and Humensky, {T. B.} and Johnson, {C. A.} and P. Kaaret and M. Kertzman and Y. Khassen and D. Kieda and H. Krawczynski and F. Krennrich and Lang, {M. J.} and Madhavan, {A. S.} and G. Maier and P. Majumdar and S. McArthur and A. McCann and K. Meagher and J. Millis and P. Moriarty and R. Mukherjee and D. Nieto and {O'Faol{\'a}in De Bhr{\'o}ithe}, A. and Ong, {R. A.} and Otte, {A. N.} and N. Park and Perkins, {J. S.} and M. Pohl and A. Popkow and H. Prokoph and J. Quinn and K. Ragan and Reyes, {L. C.} and Reynolds, {P. T.} and Richards, {G. T.} and E. Roache and Sembroski, {G. H.} and Smith, {A. W.} and D. Staszak and I. Telezhinsky and M. Theiling and A. Varlotta and Vassiliev, {V. V.} and S. Vincent and Wakely, {S. P.} and Weekes, {T. C.} and A. Weinstein and R. Welsing and Williams, {D. A.} and A. Zajczyk and B. Zitzer",
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Aliu, E, Archambault, S, Arlen, T, Aune, T, Behera, B, Beilicke, M, Benbow, W, Berger, K, Bird, R, Bouvier, A, Buckley, JH, Bugaev, V, Byrum, K, Cerruti, M, Chen, X, Ciupik, L, Connolly, MP, Cui, W, Duke, C, Dumm, J, Errando, M, Falcone, AD, Federici, S, Feng, Q, Finley, JP, Fleischhack, H, Fortin, P, Fortson, L, Furniss, A, Galante, N, Gillanders, GH, Griffin, S, Griffiths, ST, Grube, J, Gyuk, G, Hanna, D, Holder, J, Hughes, G, Humensky, TB, Johnson, CA, Kaaret, P, Kertzman, M, Khassen, Y, Kieda, D, Krawczynski, H, Krennrich, F, Lang, MJ, Madhavan, AS, Maier, G, Majumdar, P, McArthur, S, McCann, A, Meagher, K, Millis, J, Moriarty, P, Mukherjee, R, Nieto, D, O'Faoláin De Bhróithe, A, Ong, RA, Otte, AN, Park, N, Perkins, JS, Pohl, M, Popkow, A, Prokoph, H, Quinn, J, Ragan, K, Reyes, LC, Reynolds, PT, Richards, GT, Roache, E, Sembroski, GH, Smith, AW, Staszak, D, Telezhinsky, I, Theiling, M, Varlotta, A, Vassiliev, VV, Vincent, S, Wakely, SP, Weekes, TC, Weinstein, A, Welsing, R, Williams, DA, Zajczyk, A & Zitzer, B 2014, 'A three-year multi-wavelength study of the very-high-energy γ-ray blazar 1es 0229+200', Astrophysical Journal, vol. 782, no. 1, 13. https://doi.org/10.1088/0004-637X/782/1/13

A three-year multi-wavelength study of the very-high-energy γ-ray blazar 1es 0229+200. / Aliu, E.; Archambault, S.; Arlen, T.; Aune, T.; Behera, B.; Beilicke, M.; Benbow, W.; Berger, K.; Bird, R.; Bouvier, A.; Buckley, J. H.; Bugaev, V.; Byrum, K.; Cerruti, M.; Chen, X.; Ciupik, L.; Connolly, M. P.; Cui, W.; Duke, C.; Dumm, J.; Errando, M.; Falcone, Abraham David; Federici, S.; Feng, Q.; Finley, J. P.; Fleischhack, H.; Fortin, P.; Fortson, L.; Furniss, A.; Galante, N.; Gillanders, G. H.; Griffin, S.; Griffiths, S. T.; Grube, J.; Gyuk, G.; Hanna, D.; Holder, J.; Hughes, G.; Humensky, T. B.; Johnson, C. A.; Kaaret, P.; Kertzman, M.; Khassen, Y.; Kieda, D.; Krawczynski, H.; Krennrich, F.; Lang, M. J.; Madhavan, A. S.; Maier, G.; Majumdar, P.; McArthur, S.; McCann, A.; Meagher, K.; Millis, J.; Moriarty, P.; Mukherjee, R.; Nieto, D.; O'Faoláin De Bhróithe, A.; Ong, R. A.; Otte, A. N.; Park, N.; Perkins, J. S.; Pohl, M.; Popkow, A.; Prokoph, H.; Quinn, J.; Ragan, K.; Reyes, L. C.; Reynolds, P. T.; Richards, G. T.; Roache, E.; Sembroski, G. H.; Smith, A. W.; Staszak, D.; Telezhinsky, I.; Theiling, M.; Varlotta, A.; Vassiliev, V. V.; Vincent, S.; Wakely, S. P.; Weekes, T. C.; Weinstein, A.; Welsing, R.; Williams, D. A.; Zajczyk, A.; Zitzer, B.

In: Astrophysical Journal, Vol. 782, No. 1, 13, 10.02.2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - A three-year multi-wavelength study of the very-high-energy γ-ray blazar 1es 0229+200

AU - Aliu, E.

AU - Archambault, S.

AU - Arlen, T.

AU - Aune, T.

AU - Behera, B.

AU - Beilicke, M.

AU - Benbow, W.

AU - Berger, K.

AU - Bird, R.

AU - Bouvier, A.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Byrum, K.

AU - Cerruti, M.

AU - Chen, X.

AU - Ciupik, L.

AU - Connolly, M. P.

AU - Cui, W.

AU - Duke, C.

AU - Dumm, J.

AU - Errando, M.

AU - Falcone, Abraham David

AU - Federici, S.

AU - Feng, Q.

AU - Finley, J. P.

AU - Fleischhack, H.

AU - Fortin, P.

AU - Fortson, L.

AU - Furniss, A.

AU - Galante, N.

AU - Gillanders, G. H.

AU - Griffin, S.

AU - Griffiths, S. T.

AU - Grube, J.

AU - Gyuk, G.

AU - Hanna, D.

AU - Holder, J.

AU - Hughes, G.

AU - Humensky, T. B.

AU - Johnson, C. A.

AU - Kaaret, P.

AU - Kertzman, M.

AU - Khassen, Y.

AU - Kieda, D.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - Lang, M. J.

AU - Madhavan, A. S.

AU - Maier, G.

AU - Majumdar, P.

AU - McArthur, S.

AU - McCann, A.

AU - Meagher, K.

AU - Millis, J.

AU - Moriarty, P.

AU - Mukherjee, R.

AU - Nieto, D.

AU - O'Faoláin De Bhróithe, A.

AU - Ong, R. A.

AU - Otte, A. N.

AU - Park, N.

AU - Perkins, J. S.

AU - Pohl, M.

AU - Popkow, A.

AU - Prokoph, H.

AU - Quinn, J.

AU - Ragan, K.

AU - Reyes, L. C.

AU - Reynolds, P. T.

AU - Richards, G. T.

AU - Roache, E.

AU - Sembroski, G. H.

AU - Smith, A. W.

AU - Staszak, D.

AU - Telezhinsky, I.

AU - Theiling, M.

AU - Varlotta, A.

AU - Vassiliev, V. V.

AU - Vincent, S.

AU - Wakely, S. P.

AU - Weekes, T. C.

AU - Weinstein, A.

AU - Welsing, R.

AU - Williams, D. A.

AU - Zajczyk, A.

AU - Zitzer, B.

PY - 2014/2/10

Y1 - 2014/2/10

N2 - The high-frequency-peaked BL Lacertae object 1ES 0229+200 is a relatively distant (z = 0.1396), hard-spectrum (Γ 2.5), very-high-energy (VHE; E > 100 GeV) emitting γ-ray blazar. VHE measurements of this active galactic nucleus have been used to place constraints on the intensity of the extragalactic background light and the intergalactic magnetic field (IGMF). A multi-wavelength study of this object centered around VHE observations by Very Energetic Radiation Imaging Telescope Array System (VERITAS) is presented. This study obtained, over a period of three years, an 11.7 standard deviation detection and an average integral flux F(E > 300 GeV) = (23.3 ± 2.8stat ± 5.8sys) × 10-9 photons m-2 s -1, or 1.7% of the Crab Nebula's flux (assuming the Crab Nebula spectrum measured by H.E.S.S). Supporting observations from Swift and RXTE are analyzed. The Swift observations are combined with previously published Fermi observations and the VHE measurements to produce an overall spectral energy distribution which is then modeled assuming one-zone synchrotron-self-Compton emission. The χ2 probability of the TeV flux being constant is 1.6%. This, when considered in combination with measured variability in the X-ray band, and the demonstrated variability of many TeV blazars, suggests that the use of blazars such as 1ES 0229+200 for IGMF studies may not be straightforward and challenges models that attribute hard TeV spectra to secondary γ-ray production along the line of sight.

AB - The high-frequency-peaked BL Lacertae object 1ES 0229+200 is a relatively distant (z = 0.1396), hard-spectrum (Γ 2.5), very-high-energy (VHE; E > 100 GeV) emitting γ-ray blazar. VHE measurements of this active galactic nucleus have been used to place constraints on the intensity of the extragalactic background light and the intergalactic magnetic field (IGMF). A multi-wavelength study of this object centered around VHE observations by Very Energetic Radiation Imaging Telescope Array System (VERITAS) is presented. This study obtained, over a period of three years, an 11.7 standard deviation detection and an average integral flux F(E > 300 GeV) = (23.3 ± 2.8stat ± 5.8sys) × 10-9 photons m-2 s -1, or 1.7% of the Crab Nebula's flux (assuming the Crab Nebula spectrum measured by H.E.S.S). Supporting observations from Swift and RXTE are analyzed. The Swift observations are combined with previously published Fermi observations and the VHE measurements to produce an overall spectral energy distribution which is then modeled assuming one-zone synchrotron-self-Compton emission. The χ2 probability of the TeV flux being constant is 1.6%. This, when considered in combination with measured variability in the X-ray band, and the demonstrated variability of many TeV blazars, suggests that the use of blazars such as 1ES 0229+200 for IGMF studies may not be straightforward and challenges models that attribute hard TeV spectra to secondary γ-ray production along the line of sight.

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UR - http://www.scopus.com/inward/citedby.url?scp=84893060974&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/782/1/13

DO - 10.1088/0004-637X/782/1/13

M3 - Article

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VL - 782

JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

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