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 (sigma) significance in 7.6
hours 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 gamma-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 order >~2 in the HE (E>1
MeV) and VHE (E>100 GeV) gamma-ray regimes, which is corroborated by the
Fermi-LAT, VERITAS, and Whipple 10m telescope light curves.
Описание
[1307.6772] Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state
cite arxiv:1307.6772Comment: 9 pages, 7 figures. This is an author-created, un-copyedited version of an article accepted for publication in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it
%0 Generic
%1 collaboration2013multiwavelength
%A Collaboration, VERITAS
%A Aliu, E.
%A Archambault, S.
%A Arlen, T.
%A Aune, T.
%A Beilicke, M.
%A Benbow, W.
%A Bird, R.
%A Boettcher, M.
%A Bouvier, A.
%A Bugaev, V.
%A Byrum, K.
%A Cesarini, A.
%A Ciupik, L.
%A Collins-Hughes, E.
%A Connolly, M. P.
%A Cui, W.
%A Dickherber, R.
%A Duke, C.
%A Dumm, J.
%A Errando, M.
%A Falcone, A.
%A Federici, S.
%A Feng, Q.
%A Finley, J. P.
%A Finnegan, G.
%A Fortson, L.
%A Furniss, A.
%A Galante, N.
%A Gall, D.
%A Gillanders, G. H.
%A Griffin, S.
%A Grube, J.
%A Gyuk, G.
%A Hanna, D.
%A Holder, J.
%A Hughes, G.
%A Humensky, T. B.
%A Kaaret, P.
%A Kertzman, M.
%A Khassen, Y.
%A Kieda, D.
%A Krawczynski, H.
%A Krennrick, F.
%A Lang, M. J.
%A Madhavan, A. S.
%A Maier, G.
%A Majumdar, P.
%A McArthur, S.
%A McCann, A.
%A Moriarty, P.
%A Mukherjee, R.
%A Nelson, T.
%A de Bhroithe, A. O'Faolain
%A Ong, R. A.
%A Orr, M.
%A Otte, A. N.
%A Park, N.
%A Perkins, J. S.
%A Pichel, A.
%A Pohl, M.
%A Popkow, A.
%A Prokoph, H.
%A Quinn, J.
%A Ragan, K.
%A Reyes, L. C.
%A Reynolds, P. T.
%A Roache, E.
%A Saxon, D. B.
%A Schroedter, M.
%A Sembroski, G. H.
%A Skole, C.
%A Smith, A. W.
%A Staszak, D.
%A Telezhinsky, I.
%A Theiling, M.
%A Tyler, J.
%A Varlotta, A.
%A Vassiliev, V. V.
%A Wakely, S. P.
%A Weekes, T. C.
%A Weinstein, A.
%A Welsing, R.
%A Williams, D. A.
%A Zitzer, B.
%D 2013
%K blazar gas molecular
%T Multiwavelength observations and modeling of 1ES 1959+650 in a low flux
state
%U http://arxiv.org/abs/1307.6772
%X 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 (sigma) significance in 7.6
hours 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 gamma-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 order >~2 in the HE (E>1
MeV) and VHE (E>100 GeV) gamma-ray regimes, which is corroborated by the
Fermi-LAT, VERITAS, and Whipple 10m telescope light curves.
@misc{collaboration2013multiwavelength,
abstract = {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 (sigma) significance in 7.6
hours 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 gamma-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 order >~2 in the HE (E>1
MeV) and VHE (E>100 GeV) gamma-ray regimes, which is corroborated by the
Fermi-LAT, VERITAS, and Whipple 10m telescope light curves.},
added-at = {2013-07-26T23:51:57.000+0200},
author = {Collaboration, VERITAS and Aliu, E. and Archambault, S. and Arlen, T. and Aune, T. and Beilicke, M. and Benbow, W. and Bird, R. and Boettcher, M. and Bouvier, A. and Bugaev, V. and Byrum, K. and Cesarini, A. and Ciupik, L. and Collins-Hughes, E. and Connolly, M. P. and Cui, W. and Dickherber, R. and Duke, C. and Dumm, J. and Errando, M. and Falcone, A. and Federici, S. and Feng, Q. and Finley, J. P. and Finnegan, G. and Fortson, L. and Furniss, A. and Galante, N. and Gall, D. and Gillanders, G. H. and Griffin, S. and Grube, J. and Gyuk, G. and Hanna, D. and Holder, J. and Hughes, G. and Humensky, T. B. and Kaaret, P. and Kertzman, M. and Khassen, Y. and Kieda, D. and Krawczynski, H. and Krennrick, F. and Lang, M. J. and Madhavan, A. S. and Maier, G. and Majumdar, P. and McArthur, S. and McCann, A. and Moriarty, P. and Mukherjee, R. and Nelson, T. and de Bhroithe, A. O'Faolain and Ong, R. A. and Orr, M. and Otte, A. N. and Park, N. and Perkins, J. S. and Pichel, A. and Pohl, M. and Popkow, A. and Prokoph, H. and Quinn, J. and Ragan, K. and Reyes, L. C. and Reynolds, P. T. and Roache, E. and Saxon, D. B. and Schroedter, M. and Sembroski, G. H. and Skole, C. and Smith, A. W. and Staszak, D. and Telezhinsky, I. and Theiling, M. and Tyler, J. and Varlotta, A. and Vassiliev, V. V. and Wakely, S. P. and Weekes, T. C. and Weinstein, A. and Welsing, R. and Williams, D. A. and Zitzer, B.},
biburl = {https://www.bibsonomy.org/bibtex/2c5ae448fe47e7fffb7db1c9985be7b45/miki},
description = {[1307.6772] Multiwavelength observations and modeling of 1ES 1959+650 in a low flux state},
interhash = {2e89ae27391c46dd984c6974251aae7e},
intrahash = {c5ae448fe47e7fffb7db1c9985be7b45},
keywords = {blazar gas molecular},
note = {cite arxiv:1307.6772Comment: 9 pages, 7 figures. This is an author-created, un-copyedited version of an article accepted for publication in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it},
timestamp = {2013-07-26T23:51:58.000+0200},
title = {Multiwavelength observations and modeling of 1ES 1959+650 in a low flux
state},
url = {http://arxiv.org/abs/1307.6772},
year = 2013
}