Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state

We report on the VERITAS observations of the high-frequency peaked BL Lac object 1ES 1959+650 in the period 2007-2011. This source is detected at TeV energies by VERITAS at 16.4 standard deviation (σ) significance in 7.6 hr of observation in a low flux state. A multiwavelength spectral energy distri...

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Autores principales: Aliu, E., Archambault, S., Arlen, T., Aune, T., Beilicke, M., Benbow, W., Bird, R., Böttcher, M., Bouvier, A., Bugaev, V., Byrum, K., Cesarini, A., Ciupik, L., Collins-Hughes, E., Connolly, M.P., Cui, W., Dickherber, R., Duke, C., Dumm, J., Errando, M., Falcone, A., Federici, S., Feng, Q., Finley, J.P., Finnegan, G., Fortson, L., Furniss, A., Galante, N., Gall, D., Gillanders, G.H., Griffin, S., Grube, J., Gyuk, G., Hanna, D., Holder, J., Hughes, G., Humensky, T.B., 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., Moriarty, P., Mukherjee, R., Nelson, T., O'Faoláin De Bhróithe, A., Ong, R.A., Orr, M., Otte, A.N., Park, N., Perkins, J.S., Pichel, A., Pohl, M., Popkow, A., Prokoph, H., Quinn, J., Ragan, K., Reyes, L.C., Reynolds, P.T., Roache, E., Saxon, D.B., Schroedter, M., Sembroski, G.H., Skole, C., Smith, A.W., Staszak, D., Telezhinsky, I., Theiling, M., Tyler, J., Varlotta, A., Vassiliev, V.V., Wakely, S.P., Weekes, T.C., Weinstein, A., Welsing, R., Williams, D.A., Zitzer, B.
Formato: JOUR
Materias:
BL Lacertae objects: general
galaxies: active
gamma rays: galaxies
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_0004637X_v775_n1_p_Aliu
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_0004637X_v775_n1_p_Aliu2023-10-03T14:02:33Z Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state Aliu, E. Archambault, S. Arlen, T. Aune, T. Beilicke, M. Benbow, W. Bird, R. Böttcher, M. Bouvier, A. Bugaev, V. Byrum, K. Cesarini, A. Ciupik, L. Collins-Hughes, E. Connolly, M.P. Cui, W. Dickherber, R. Duke, C. Dumm, J. Errando, M. Falcone, A. Federici, S. Feng, Q. Finley, J.P. Finnegan, G. Fortson, L. Furniss, A. Galante, N. Gall, D. Gillanders, G.H. Griffin, S. Grube, J. Gyuk, G. Hanna, D. Holder, J. Hughes, G. Humensky, T.B. 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. Moriarty, P. Mukherjee, R. Nelson, T. O'Faoláin De Bhróithe, A. Ong, R.A. Orr, M. Otte, A.N. Park, N. Perkins, J.S. Pichel, A. Pohl, M. Popkow, A. Prokoph, H. Quinn, J. Ragan, K. Reyes, L.C. Reynolds, P.T. Roache, E. Saxon, D.B. Schroedter, M. Sembroski, G.H. Skole, C. Smith, A.W. Staszak, D. Telezhinsky, I. Theiling, M. Tyler, J. Varlotta, A. Vassiliev, V.V. Wakely, S.P. Weekes, T.C. Weinstein, A. Welsing, R. Williams, D.A. Zitzer, B. BL Lacertae objects: general galaxies: active gamma rays: galaxies We report on the VERITAS observations of the high-frequency peaked BL Lac object 1ES 1959+650 in the period 2007-2011. This source is detected at TeV energies by VERITAS at 16.4 standard deviation (σ) significance in 7.6 hr of observation in a low flux state. A multiwavelength spectral energy distribution (SED) is constructed from contemporaneous data from VERITAS, Fermi-LAT, RXTE PCA, and Swift UVOT. Swift XRT data is not included in the SED due to a lack of simultaneous observations with VERITAS. In contrast to the orphan γ-ray flare exhibited by this source in 2002, the X-ray flux of the source is found to vary by an order of magnitude, while other energy regimes exhibit less variable emission. A quasi-equilibrium synchrotron self-Compton model with an additional external radiation field is used to describe three SEDs corresponding to the lowest, highest, and average X-ray states. The variation in the X-ray spectrum is modeled by changing the electron injection spectral index, with minor adjustments of the kinetic luminosity in electrons. This scenario produces small-scale flux variability of the order of ≲ 2 in the high energy (E > 1 MeV) and very high energy (E > 100 GeV) γ-ray regimes, which is corroborated by the Fermi-LAT, VERITAS, and Whipple 10 m telescope light curves. © 2013. The American Astronomical Society. All rights reserved.. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_0004637X_v775_n1_p_Aliu
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic BL Lacertae objects: general
galaxies: active
gamma rays: galaxies
spellingShingle BL Lacertae objects: general
galaxies: active
gamma rays: galaxies
Aliu, E.
Archambault, S.
Arlen, T.
Aune, T.
Beilicke, M.
Benbow, W.
Bird, R.
Böttcher, M.
Bouvier, A.
Bugaev, V.
Byrum, K.
Cesarini, A.
Ciupik, L.
Collins-Hughes, E.
Connolly, M.P.
Cui, W.
Dickherber, R.
Duke, C.
Dumm, J.
Errando, M.
Falcone, A.
Federici, S.
Feng, Q.
Finley, J.P.
Finnegan, G.
Fortson, L.
Furniss, A.
Galante, N.
Gall, D.
Gillanders, G.H.
Griffin, S.
Grube, J.
Gyuk, G.
Hanna, D.
Holder, J.
Hughes, G.
Humensky, T.B.
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.
Moriarty, P.
Mukherjee, R.
Nelson, T.
O'Faoláin De Bhróithe, A.
Ong, R.A.
Orr, M.
Otte, A.N.
Park, N.
Perkins, J.S.
Pichel, A.
Pohl, M.
Popkow, A.
Prokoph, H.
Quinn, J.
Ragan, K.
Reyes, L.C.
Reynolds, P.T.
Roache, E.
Saxon, D.B.
Schroedter, M.
Sembroski, G.H.
Skole, C.
Smith, A.W.
Staszak, D.
Telezhinsky, I.
Theiling, M.
Tyler, J.
Varlotta, A.
Vassiliev, V.V.
Wakely, S.P.
Weekes, T.C.
Weinstein, A.
Welsing, R.
Williams, D.A.
Zitzer, B.
Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state
topic_facet BL Lacertae objects: general
galaxies: active
gamma rays: galaxies
description We report on the VERITAS observations of the high-frequency peaked BL Lac object 1ES 1959+650 in the period 2007-2011. This source is detected at TeV energies by VERITAS at 16.4 standard deviation (σ) significance in 7.6 hr of observation in a low flux state. A multiwavelength spectral energy distribution (SED) is constructed from contemporaneous data from VERITAS, Fermi-LAT, RXTE PCA, and Swift UVOT. Swift XRT data is not included in the SED due to a lack of simultaneous observations with VERITAS. In contrast to the orphan γ-ray flare exhibited by this source in 2002, the X-ray flux of the source is found to vary by an order of magnitude, while other energy regimes exhibit less variable emission. A quasi-equilibrium synchrotron self-Compton model with an additional external radiation field is used to describe three SEDs corresponding to the lowest, highest, and average X-ray states. The variation in the X-ray spectrum is modeled by changing the electron injection spectral index, with minor adjustments of the kinetic luminosity in electrons. This scenario produces small-scale flux variability of the order of ≲ 2 in the high energy (E > 1 MeV) and very high energy (E > 100 GeV) γ-ray regimes, which is corroborated by the Fermi-LAT, VERITAS, and Whipple 10 m telescope light curves. © 2013. The American Astronomical Society. All rights reserved..
format JOUR
author Aliu, E.
Archambault, S.
Arlen, T.
Aune, T.
Beilicke, M.
Benbow, W.
Bird, R.
Böttcher, M.
Bouvier, A.
Bugaev, V.
Byrum, K.
Cesarini, A.
Ciupik, L.
Collins-Hughes, E.
Connolly, M.P.
Cui, W.
Dickherber, R.
Duke, C.
Dumm, J.
Errando, M.
Falcone, A.
Federici, S.
Feng, Q.
Finley, J.P.
Finnegan, G.
Fortson, L.
Furniss, A.
Galante, N.
Gall, D.
Gillanders, G.H.
Griffin, S.
Grube, J.
Gyuk, G.
Hanna, D.
Holder, J.
Hughes, G.
Humensky, T.B.
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.
Moriarty, P.
Mukherjee, R.
Nelson, T.
O'Faoláin De Bhróithe, A.
Ong, R.A.
Orr, M.
Otte, A.N.
Park, N.
Perkins, J.S.
Pichel, A.
Pohl, M.
Popkow, A.
Prokoph, H.
Quinn, J.
Ragan, K.
Reyes, L.C.
Reynolds, P.T.
Roache, E.
Saxon, D.B.
Schroedter, M.
Sembroski, G.H.
Skole, C.
Smith, A.W.
Staszak, D.
Telezhinsky, I.
Theiling, M.
Tyler, J.
Varlotta, A.
Vassiliev, V.V.
Wakely, S.P.
Weekes, T.C.
Weinstein, A.
Welsing, R.
Williams, D.A.
Zitzer, B.
author_facet Aliu, E.
Archambault, S.
Arlen, T.
Aune, T.
Beilicke, M.
Benbow, W.
Bird, R.
Böttcher, M.
Bouvier, A.
Bugaev, V.
Byrum, K.
Cesarini, A.
Ciupik, L.
Collins-Hughes, E.
Connolly, M.P.
Cui, W.
Dickherber, R.
Duke, C.
Dumm, J.
Errando, M.
Falcone, A.
Federici, S.
Feng, Q.
Finley, J.P.
Finnegan, G.
Fortson, L.
Furniss, A.
Galante, N.
Gall, D.
Gillanders, G.H.
Griffin, S.
Grube, J.
Gyuk, G.
Hanna, D.
Holder, J.
Hughes, G.
Humensky, T.B.
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.
Moriarty, P.
Mukherjee, R.
Nelson, T.
O'Faoláin De Bhróithe, A.
Ong, R.A.
Orr, M.
Otte, A.N.
Park, N.
Perkins, J.S.
Pichel, A.
Pohl, M.
Popkow, A.
Prokoph, H.
Quinn, J.
Ragan, K.
Reyes, L.C.
Reynolds, P.T.
Roache, E.
Saxon, D.B.
Schroedter, M.
Sembroski, G.H.
Skole, C.
Smith, A.W.
Staszak, D.
Telezhinsky, I.
Theiling, M.
Tyler, J.
Varlotta, A.
Vassiliev, V.V.
Wakely, S.P.
Weekes, T.C.
Weinstein, A.
Welsing, R.
Williams, D.A.
Zitzer, B.
author_sort Aliu, E.
title Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state
title_short Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state
title_full Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state
title_fullStr Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state
title_full_unstemmed Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state
title_sort multiwavelength observations and modeling of 1es 1959+650 in a low flux state
url http://hdl.handle.net/20.500.12110/paper_0004637X_v775_n1_p_Aliu
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