The WEBT Campaign on the Blazar 3C 279 in 2006
M. Boettcher;S. Basu;M. Joshi;A. J. Castro-Tirado;A. De Ugarte Postigo;M. Jelinek;S. Vitek;Y. Y. Kovalev;G. Tosti;V. A. Hagen-Thorn;V. M. Larionov;L. Larionova;H. -S. Yim;G. Henson;T. Hovatta;A. Laehteenmaeki;E. Nieppola;R. Ivanidze;B. Kapanadze;O. Kurtanidze;M. Nikolashvili;L. Sigua;Yu. A. Kovalev;C. -U. Lee;B. -W. Sohn;P. Leto;L. Lanteri;M. Villata;C. M. Raiteri;U. Bach;L. Fuhrmann;K. Marshall;H. R. Miller;M. A. Osterman;W. T. Ryle;M. G. Mingaliev;N. Mirabal;J. Ohlert;S. Pak;C. S. Peters;J. R. Thorstensen;T. Pursimo;J. Robertson;S. Vennes;T. Robertson;A. Volvach;Y. Ishii;M. Kamada;M. Katsuura;D. Kotaka;M. Kurosaki;S. Mizoguchi;K. Nakamura;A. Arai;S. Nishiyama;K. Sadakane;N. Sumitomo;Y. Tamesue;K. Tanaka;M. Yamanaka;J. Webb;N. Aryan;A. Sadun;M. Ibrahimov;I. M. Asfandiyarov;A. Strigachev;R. Bachev;A. Berduygin;E. Lindfors;K. Nilsson;M. Pasanen;L. O. Takalo;M. Blaek;R. Hudec;P. Kubanek;C. Buemi;A. Frasca;E. Marilli;C. Trigilio;G. Umana
Abstract
The quasar 3C 279 was the target of an extensive multiwavelength monitoring campaign from 2006 January through April. An optical-IR-radio monitoring campaign by the Whole Earth Blazar Telescope (WEBT) collaboration was organized around target-of-opportunity X-ray and soft gamma-ray observations with Chandra and INTEGRAL in 2006 mid-January, with additional X-ray coverage by RXTE and Swift XRT. In this paper we focus on the results of the WEBT campaign. The source exhibited substantial variabilit