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. Kosack; H. 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

doi:10.1086/503738

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

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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 language	English (US)
Pages (from-to)	742-747
Number of pages	6
Journal	Astrophysical Journal
Volume	644
Issue number	2 II
DOIs	https://doi.org/10.1086/503738
State	Published - Jun 10 2006

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1086/503738

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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., ... 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

@article{d0cd1a1c2c4c47e0b7dd00ccf73b03e4,

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.",

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

year = "2006",

month = jun,

day = "10",

doi = "10.1086/503738",

language = "English (US)",

volume = "644",

pages = "742--747",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "2 II",

}

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

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.

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

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

U2 - 10.1086/503738

DO - 10.1086/503738

M3 - Article

AN - SCOPUS:34249310172

SN - 0004-637X

VL - 644

SP - 742

EP - 747

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 II

ER -

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

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