Multiwavelength observations of IES 1959+650, 1 year after the strong outburst of 2002

K. Gutierrez, H. M. Badran, S. M. Bradbury, J. H. Buckley, O. Celik, Y. C. Chow, P. Cogan, W. Cui, M. Daniel, A. Falcone, S. J. Fegan, J. P. Finley, G. H. Gillanders, J. Grube, J. Holder, D. Horan, S. B. Hughes, I. Jung, D. Kieda, K. KosackH. Krawczynski, F. Krennrich, M. J. Lang, S. Le Bohec, G. Maier, P. Moriarty, J. Perkins, M. Pohl, J. Quinn, P. F. Rebillot, H. J. Rose, M. Schroedter, G. H. Sembroski, S. P. Wakely, T. C. Weekes, R. J. White, M. Aller, H. Aller, P. Charlot, J. F. Le Campion

Research output: Contribution to journalArticle

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Abstract

In 2003 April-May, the blazar IES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m γ-ray telescope, the Rossi X-Ray Timing Explorer, the Bordeaux Optical Observatory, and the University of Michigan Radio Astronomy Observatory. We present the multiwavelength data taken from 2003 May 2 to June 7 and compare the source characteristics with those measured during observations taken during the years 2000 and 2002. The X-ray observations gave a data set with high signal-to-noise ratio light curves and energy spectra; however, the γ-ray observations did not reveal a major TeV γ-ray flare. Furthermore, we find that the radio and optical fluxes do not show statistically significant deviations from those measured during the 2002 flaring periods. While the X-ray flux and X-ray photon index appear correlated during sub-sequent observations, the apparent correlation evolved significantly among the years 2000, 2002, and 2003. We discuss the implications of this finding for the mechanism that causes the flaring activity.

Original languageEnglish (US)
Pages (from-to)742-747
Number of pages6
JournalAstrophysical Journal
Volume644
Issue number2 II
DOIs
StatePublished - Jun 10 2006

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outburst
rays
observatories
x rays
observatory
radio
radio astronomy
X Ray Timing Explorer
astronomy
signal-to-noise ratio
flares
light curve
energy spectra
signal to noise ratios
telescopes
deviation
causes
photons
energy
flaring

All Science Journal Classification (ASJC) codes

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Gutierrez, K., Badran, H. M., Bradbury, S. M., Buckley, J. H., Celik, O., Chow, Y. C., ... Le Campion, J. F. (2006). Multiwavelength observations of IES 1959+650, 1 year after the strong outburst of 2002. Astrophysical Journal, 644(2 II), 742-747. https://doi.org/10.1086/503738
Gutierrez, K. ; Badran, H. M. ; Bradbury, S. M. ; Buckley, J. H. ; Celik, O. ; Chow, Y. C. ; Cogan, P. ; Cui, W. ; Daniel, M. ; Falcone, A. ; Fegan, S. J. ; Finley, J. P. ; Gillanders, G. H. ; Grube, J. ; Holder, J. ; Horan, D. ; Hughes, S. B. ; Jung, I. ; Kieda, D. ; Kosack, K. ; Krawczynski, H. ; Krennrich, F. ; Lang, M. J. ; Le Bohec, S. ; Maier, G. ; Moriarty, P. ; Perkins, J. ; Pohl, M. ; Quinn, J. ; Rebillot, P. F. ; Rose, H. J. ; Schroedter, M. ; Sembroski, G. H. ; Wakely, S. P. ; Weekes, T. C. ; White, R. J. ; Aller, M. ; Aller, H. ; Charlot, P. ; Le Campion, J. F. / Multiwavelength observations of IES 1959+650, 1 year after the strong outburst of 2002. In: Astrophysical Journal. 2006 ; Vol. 644, No. 2 II. pp. 742-747.
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title = "Multiwavelength observations of IES 1959+650, 1 year after the strong outburst of 2002",
abstract = "In 2003 April-May, the blazar IES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m γ-ray telescope, the Rossi X-Ray Timing Explorer, the Bordeaux Optical Observatory, and the University of Michigan Radio Astronomy Observatory. We present the multiwavelength data taken from 2003 May 2 to June 7 and compare the source characteristics with those measured during observations taken during the years 2000 and 2002. The X-ray observations gave a data set with high signal-to-noise ratio light curves and energy spectra; however, the γ-ray observations did not reveal a major TeV γ-ray flare. Furthermore, we find that the radio and optical fluxes do not show statistically significant deviations from those measured during the 2002 flaring periods. While the X-ray flux and X-ray photon index appear correlated during sub-sequent observations, the apparent correlation evolved significantly among the years 2000, 2002, and 2003. We discuss the implications of this finding for the mechanism that causes the flaring activity.",
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Gutierrez, K, Badran, HM, Bradbury, SM, Buckley, JH, Celik, O, Chow, YC, Cogan, P, Cui, W, Daniel, M, Falcone, A, Fegan, SJ, Finley, JP, Gillanders, GH, Grube, J, Holder, J, Horan, D, Hughes, SB, Jung, I, Kieda, D, Kosack, K, Krawczynski, H, Krennrich, F, Lang, MJ, Le Bohec, S, Maier, G, Moriarty, P, Perkins, J, Pohl, M, Quinn, J, Rebillot, PF, Rose, HJ, Schroedter, M, Sembroski, GH, Wakely, SP, Weekes, TC, White, RJ, Aller, M, Aller, H, Charlot, P & Le Campion, JF 2006, 'Multiwavelength observations of IES 1959+650, 1 year after the strong outburst of 2002', Astrophysical Journal, vol. 644, no. 2 II, pp. 742-747. https://doi.org/10.1086/503738

Multiwavelength observations of IES 1959+650, 1 year after the strong outburst of 2002. / Gutierrez, K.; Badran, H. M.; Bradbury, S. M.; Buckley, J. H.; Celik, O.; Chow, Y. C.; Cogan, P.; Cui, W.; Daniel, M.; Falcone, A.; Fegan, S. J.; Finley, J. P.; Gillanders, G. H.; Grube, J.; Holder, J.; Horan, D.; Hughes, S. B.; Jung, I.; Kieda, D.; Kosack, K.; Krawczynski, H.; Krennrich, F.; Lang, M. J.; Le Bohec, S.; Maier, G.; Moriarty, P.; Perkins, J.; Pohl, M.; Quinn, J.; Rebillot, P. F.; Rose, H. J.; Schroedter, M.; Sembroski, G. H.; Wakely, S. P.; Weekes, T. C.; White, R. J.; Aller, M.; Aller, H.; Charlot, P.; Le Campion, J. F.

In: Astrophysical Journal, Vol. 644, No. 2 II, 10.06.2006, p. 742-747.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Multiwavelength observations of IES 1959+650, 1 year after the strong outburst of 2002

AU - Gutierrez, K.

AU - Badran, H. M.

AU - Bradbury, S. M.

AU - Buckley, J. H.

AU - Celik, O.

AU - Chow, Y. C.

AU - Cogan, P.

AU - Cui, W.

AU - Daniel, M.

AU - Falcone, A.

AU - Fegan, S. J.

AU - Finley, J. P.

AU - Gillanders, G. H.

AU - Grube, J.

AU - Holder, J.

AU - Horan, D.

AU - Hughes, S. B.

AU - Jung, I.

AU - Kieda, D.

AU - Kosack, K.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - Lang, M. J.

AU - Le Bohec, S.

AU - Maier, G.

AU - Moriarty, P.

AU - Perkins, J.

AU - Pohl, M.

AU - Quinn, J.

AU - Rebillot, P. F.

AU - Rose, H. J.

AU - Schroedter, M.

AU - Sembroski, G. H.

AU - Wakely, S. P.

AU - Weekes, T. C.

AU - White, R. J.

AU - Aller, M.

AU - Aller, H.

AU - Charlot, P.

AU - Le Campion, J. F.

PY - 2006/6/10

Y1 - 2006/6/10

N2 - In 2003 April-May, the blazar IES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m γ-ray telescope, the Rossi X-Ray Timing Explorer, the Bordeaux Optical Observatory, and the University of Michigan Radio Astronomy Observatory. We present the multiwavelength data taken from 2003 May 2 to June 7 and compare the source characteristics with those measured during observations taken during the years 2000 and 2002. The X-ray observations gave a data set with high signal-to-noise ratio light curves and energy spectra; however, the γ-ray observations did not reveal a major TeV γ-ray flare. Furthermore, we find that the radio and optical fluxes do not show statistically significant deviations from those measured during the 2002 flaring periods. While the X-ray flux and X-ray photon index appear correlated during sub-sequent observations, the apparent correlation evolved significantly among the years 2000, 2002, and 2003. We discuss the implications of this finding for the mechanism that causes the flaring activity.

AB - In 2003 April-May, the blazar IES 1959+650 showed an increased level of X-ray activity. This prompted a multiwavelength observation campaign with the Whipple 10 m γ-ray telescope, the Rossi X-Ray Timing Explorer, the Bordeaux Optical Observatory, and the University of Michigan Radio Astronomy Observatory. We present the multiwavelength data taken from 2003 May 2 to June 7 and compare the source characteristics with those measured during observations taken during the years 2000 and 2002. The X-ray observations gave a data set with high signal-to-noise ratio light curves and energy spectra; however, the γ-ray observations did not reveal a major TeV γ-ray flare. Furthermore, we find that the radio and optical fluxes do not show statistically significant deviations from those measured during the 2002 flaring periods. While the X-ray flux and X-ray photon index appear correlated during sub-sequent observations, the apparent correlation evolved significantly among the years 2000, 2002, and 2003. We discuss the implications of this finding for the mechanism that causes the flaring activity.

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UR - http://www.scopus.com/inward/citedby.url?scp=34249310172&partnerID=8YFLogxK

U2 - 10.1086/503738

DO - 10.1086/503738

M3 - Article

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JO - Astrophysical Journal

JF - Astrophysical Journal

SN - 0004-637X

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Gutierrez K, Badran HM, Bradbury SM, Buckley JH, Celik O, Chow YC et al. Multiwavelength observations of IES 1959+650, 1 year after the strong outburst of 2002. Astrophysical Journal. 2006 Jun 10;644(2 II):742-747. https://doi.org/10.1086/503738