Multiwavelength observations of markarian 421 in 2005-2006

D. Horan; V. A. Acciari; S. M. Bradbury; J. H. Buckley; V. Bugaev; K. L. Byrum; A. Cannon; O. Celik; A. Cesarini; Y. C.K. Chow; L. Ciupik; P. Cogan; A. D. Falcone; S. J. Fegan; J. P. Finley; P. Fortin; L. F. Fortson; D. Gall; G. H. Gillanders; J. Grube; G. Gyuk; D. Hanna; E. Hays; M. Kertzman; J. Kildea; A. Konopelko; H. Krawczynski; F. Krennrich; M. J. Lang; K. Lee; P. Moriarty; T. Nagai; J. Niemiec; R. A. Ong; J. S. Perkins; M. Pohl; J. Quinn; P. T. Reynolds; H. J. Rose; G. H. Sembroski; A. W. Smith; D. Steele; S. P. Swordy; J. A. Toner; V. V. Vassiliev; S. P. Wakely; T. C. Weekes; R. J. White; D. A. Williams; M. D. Wood; B. Zitzer; H. D. Aller; M. F. Aller; M. Baker; D. Barnaby; M. T. Carini; P. Charlot; J. P. Dumm; N. E. Fields; T. Hovatta; B. Jordan; Y. A. Kovalev; Y. Y. Kovalev; H. A. Krimm; O. M. Kurtanidze; A. L. Ahteenmaki; J. F.Le Campion; J. Maune; T. Montaruli; A. C. Sadun; S. Smith; M. Tornikoski; M. Turunen; R. Walters

doi:10.1088/0004-637X/695/1/596

Multiwavelength observations of markarian 421 in 2005-2006

D. Horan, V. A. Acciari, S. M. Bradbury, J. H. Buckley, V. Bugaev, K. L. Byrum, A. Cannon, O. Celik, A. Cesarini, Y. C.K. Chow, L. Ciupik, P. Cogan, A. D. Falcone, S. J. Fegan, J. P. Finley, P. Fortin, L. F. Fortson, D. Gall, G. H. Gillanders, J. GrubeG. Gyuk, D. Hanna, E. Hays, M. Kertzman, J. Kildea, A. Konopelko, H. Krawczynski, F. Krennrich, M. J. Lang, K. Lee, P. Moriarty, T. Nagai, J. Niemiec, R. A. Ong, J. S. Perkins, M. Pohl, J. Quinn, P. T. Reynolds, H. J. Rose, G. H. Sembroski, A. W. Smith, D. Steele, S. P. Swordy, J. A. Toner, V. V. Vassiliev, S. P. Wakely, T. C. Weekes, R. J. White, D. A. Williams, M. D. Wood, B. Zitzer, H. D. Aller, M. F. Aller, M. Baker, D. Barnaby, M. T. Carini, P. Charlot, J. P. Dumm, N. E. Fields, T. Hovatta, B. Jordan, Y. A. Kovalev, Y. Y. Kovalev, H. A. Krimm, O. M. Kurtanidze, A. L. Ahteenmaki, J. F.Le Campion, J. Maune, T. Montaruli, A. C. Sadun, S. Smith, M. Tornikoski, M. Turunen, R. Walters

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Abstract

Since 2005 September, the Whipple 10 m Gamma-ray Telescope has been operated primarily as a blazar monitor. The five northern hemisphere blazars that have already been detected at the Whipple Observatory, Markarian 421 (Mrk 421), H1426+428, Mrk 501, 1ES 1959+650, and 1ES 2344+514, are monitored routinely each night that they are visible. We report on the Mrk 421 observations taken from 2005 November to 2006 June in the gamma-ray, X-ray, optical, and radio bands. During this time, Mrk 421 was found to be variable at all wavelengths probed. Both the variability and the correlations among different energy regimes are studied in detail here. A tentative correlation, with large spread, was measured between the X-ray and gamma-ray bands, while no clear correlation was evident among the other energy bands. In addition to this, the well-sampled spectral energy distribution of Mrk 421 (1101+384) is presented for three different activity levels. The observations of the other blazar targets will be reported separately.

Original language	English (US)
Pages (from-to)	596-618
Number of pages	23
Journal	Astrophysical Journal
Volume	695
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/695/1/596
State	Published - Apr 10 2009

All Science Journal Classification (ASJC) codes

Astronomy and Astrophysics
Space and Planetary Science

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10.1088/0004-637X/695/1/596

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Horan, D., Acciari, V. A., Bradbury, S. M., Buckley, J. H., Bugaev, V., Byrum, K. L., Cannon, A., Celik, O., Cesarini, A., Chow, Y. C. K., Ciupik, L., Cogan, P., Falcone, A. D., Fegan, S. J., Finley, J. P., Fortin, P., Fortson, L. F., Gall, D., Gillanders, G. H., ... Walters, R. (2009). Multiwavelength observations of markarian 421 in 2005-2006. Astrophysical Journal, 695(1), 596-618. https://doi.org/10.1088/0004-637X/695/1/596

@article{6333efbd34494e1c983b26b7dca41b48,

title = "Multiwavelength observations of markarian 421 in 2005-2006",

abstract = "Since 2005 September, the Whipple 10 m Gamma-ray Telescope has been operated primarily as a blazar monitor. The five northern hemisphere blazars that have already been detected at the Whipple Observatory, Markarian 421 (Mrk 421), H1426+428, Mrk 501, 1ES 1959+650, and 1ES 2344+514, are monitored routinely each night that they are visible. We report on the Mrk 421 observations taken from 2005 November to 2006 June in the gamma-ray, X-ray, optical, and radio bands. During this time, Mrk 421 was found to be variable at all wavelengths probed. Both the variability and the correlations among different energy regimes are studied in detail here. A tentative correlation, with large spread, was measured between the X-ray and gamma-ray bands, while no clear correlation was evident among the other energy bands. In addition to this, the well-sampled spectral energy distribution of Mrk 421 (1101+384) is presented for three different activity levels. The observations of the other blazar targets will be reported separately.",

author = "D. Horan and Acciari, {V. A.} and Bradbury, {S. M.} and Buckley, {J. H.} and V. Bugaev and Byrum, {K. L.} and A. Cannon and O. Celik and A. Cesarini and Chow, {Y. C.K.} and L. Ciupik and P. Cogan and Falcone, {A. D.} and Fegan, {S. J.} and Finley, {J. P.} and P. Fortin and Fortson, {L. F.} and D. Gall and Gillanders, {G. H.} and J. Grube and G. Gyuk and D. Hanna and E. Hays and M. Kertzman and J. Kildea and A. Konopelko and H. Krawczynski and F. Krennrich and Lang, {M. J.} and K. Lee and P. Moriarty and T. Nagai and J. Niemiec and Ong, {R. A.} and Perkins, {J. S.} and M. Pohl and J. Quinn and Reynolds, {P. T.} and Rose, {H. J.} and Sembroski, {G. H.} and Smith, {A. W.} and D. Steele and Swordy, {S. P.} and Toner, {J. A.} and Vassiliev, {V. V.} and Wakely, {S. P.} and Weekes, {T. C.} and White, {R. J.} and Williams, {D. A.} and Wood, {M. D.} and B. Zitzer and Aller, {H. D.} and Aller, {M. F.} and M. Baker and D. Barnaby and Carini, {M. T.} and P. Charlot and Dumm, {J. P.} and Fields, {N. E.} and T. Hovatta and B. Jordan and Kovalev, {Y. A.} and Kovalev, {Y. Y.} and Krimm, {H. A.} and Kurtanidze, {O. M.} and Ahteenmaki, {A. L.} and Campion, {J. F.Le} and J. Maune and T. Montaruli and Sadun, {A. C.} and S. Smith and M. Tornikoski and M. Turunen and R. Walters",

year = "2009",

month = apr,

day = "10",

doi = "10.1088/0004-637X/695/1/596",

language = "English (US)",

volume = "695",

pages = "596--618",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "American Astronomical Society",

number = "1",

}

Horan, D, Acciari, VA, Bradbury, SM, Buckley, JH, Bugaev, V, Byrum, KL, Cannon, A, Celik, O, Cesarini, A, Chow, YCK, Ciupik, L, Cogan, P, Falcone, AD, Fegan, SJ, Finley, JP, Fortin, P, Fortson, LF, Gall, D, Gillanders, GH, Grube, J, Gyuk, G, Hanna, D, Hays, E, Kertzman, M, Kildea, J, Konopelko, A, Krawczynski, H, Krennrich, F, Lang, MJ, Lee, K, Moriarty, P, Nagai, T, Niemiec, J, Ong, RA, Perkins, JS, Pohl, M, Quinn, J, Reynolds, PT, Rose, HJ, Sembroski, GH, Smith, AW, Steele, D, Swordy, SP, Toner, JA, Vassiliev, VV, Wakely, SP, Weekes, TC, White, RJ, Williams, DA, Wood, MD, Zitzer, B, Aller, HD, Aller, MF, Baker, M, Barnaby, D, Carini, MT, Charlot, P, Dumm, JP, Fields, NE, Hovatta, T, Jordan, B, Kovalev, YA, Kovalev, YY, Krimm, HA, Kurtanidze, OM, Ahteenmaki, AL, Campion, JFL, Maune, J, Montaruli, T, Sadun, AC, Smith, S, Tornikoski, M, Turunen, M & Walters, R 2009, 'Multiwavelength observations of markarian 421 in 2005-2006', Astrophysical Journal, vol. 695, no. 1, pp. 596-618. https://doi.org/10.1088/0004-637X/695/1/596

TY - JOUR

T1 - Multiwavelength observations of markarian 421 in 2005-2006

AU - Horan, D.

AU - Acciari, V. A.

AU - Bradbury, S. M.

AU - Buckley, J. H.

AU - Bugaev, V.

AU - Byrum, K. L.

AU - Cannon, A.

AU - Celik, O.

AU - Cesarini, A.

AU - Chow, Y. C.K.

AU - Ciupik, L.

AU - Cogan, P.

AU - Falcone, A. D.

AU - Fegan, S. J.

AU - Finley, J. P.

AU - Fortin, P.

AU - Fortson, L. F.

AU - Gall, D.

AU - Gillanders, G. H.

AU - Grube, J.

AU - Gyuk, G.

AU - Hanna, D.

AU - Hays, E.

AU - Kertzman, M.

AU - Kildea, J.

AU - Konopelko, A.

AU - Krawczynski, H.

AU - Krennrich, F.

AU - Lang, M. J.

AU - Lee, K.

AU - Moriarty, P.

AU - Nagai, T.

AU - Niemiec, J.

AU - Ong, R. A.

AU - Perkins, J. S.

AU - Pohl, M.

AU - Quinn, J.

AU - Reynolds, P. T.

AU - Rose, H. J.

AU - Sembroski, G. H.

AU - Smith, A. W.

AU - Steele, D.

AU - Swordy, S. P.

AU - Toner, J. A.

AU - Vassiliev, V. V.

AU - Wakely, S. P.

AU - Weekes, T. C.

AU - White, R. J.

AU - Williams, D. A.

AU - Wood, M. D.

AU - Zitzer, B.

AU - Aller, H. D.

AU - Aller, M. F.

AU - Baker, M.

AU - Barnaby, D.

AU - Carini, M. T.

AU - Charlot, P.

AU - Dumm, J. P.

AU - Fields, N. E.

AU - Hovatta, T.

AU - Jordan, B.

AU - Kovalev, Y. A.

AU - Kovalev, Y. Y.

AU - Krimm, H. A.

AU - Kurtanidze, O. M.

AU - Ahteenmaki, A. L.

AU - Campion, J. F.Le

AU - Maune, J.

AU - Montaruli, T.

AU - Sadun, A. C.

AU - Smith, S.

AU - Tornikoski, M.

AU - Turunen, M.

AU - Walters, R.

PY - 2009/4/10

Y1 - 2009/4/10

N2 - Since 2005 September, the Whipple 10 m Gamma-ray Telescope has been operated primarily as a blazar monitor. The five northern hemisphere blazars that have already been detected at the Whipple Observatory, Markarian 421 (Mrk 421), H1426+428, Mrk 501, 1ES 1959+650, and 1ES 2344+514, are monitored routinely each night that they are visible. We report on the Mrk 421 observations taken from 2005 November to 2006 June in the gamma-ray, X-ray, optical, and radio bands. During this time, Mrk 421 was found to be variable at all wavelengths probed. Both the variability and the correlations among different energy regimes are studied in detail here. A tentative correlation, with large spread, was measured between the X-ray and gamma-ray bands, while no clear correlation was evident among the other energy bands. In addition to this, the well-sampled spectral energy distribution of Mrk 421 (1101+384) is presented for three different activity levels. The observations of the other blazar targets will be reported separately.

AB - Since 2005 September, the Whipple 10 m Gamma-ray Telescope has been operated primarily as a blazar monitor. The five northern hemisphere blazars that have already been detected at the Whipple Observatory, Markarian 421 (Mrk 421), H1426+428, Mrk 501, 1ES 1959+650, and 1ES 2344+514, are monitored routinely each night that they are visible. We report on the Mrk 421 observations taken from 2005 November to 2006 June in the gamma-ray, X-ray, optical, and radio bands. During this time, Mrk 421 was found to be variable at all wavelengths probed. Both the variability and the correlations among different energy regimes are studied in detail here. A tentative correlation, with large spread, was measured between the X-ray and gamma-ray bands, while no clear correlation was evident among the other energy bands. In addition to this, the well-sampled spectral energy distribution of Mrk 421 (1101+384) is presented for three different activity levels. The observations of the other blazar targets will be reported separately.

UR - http://www.scopus.com/inward/record.url?scp=84908502667&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84908502667&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/695/1/596

DO - 10.1088/0004-637X/695/1/596

M3 - Article

AN - SCOPUS:84908502667

SN - 0004-637X

VL - 695

SP - 596

EP - 618

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

Multiwavelength observations of markarian 421 in 2005-2006

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