A4 Refereed article in a conference publication
Multifrequency observations of the gamma-ray blazar 3C 279 in low-state during integral AO-1
Authors: Collmar W, Bottcher M, Burwitz V, Courvoisier T, Komossa S, Kretschmar P, Nieppola E, Nilsson K, Ojala T, Pottschmidt K, Pasanen M, Pursimo T, Sillanpaa A, Takalo L, Tornikoski M, Ungerechts H, Valtaoja E, Walter R, Webster R, Whiting M, Wiik K, Wong I
Publication year: 2004
Journal:: ESA SP
Journal name in source: PROCEEDINGS OF THE 5TH INTEGRAL WORKSHOP ON THE INTEGRAL UNIVERSE
Journal acronym: ESA SP PUBL
Volume: 552
First page : 555
Last page: 558
Number of pages: 4
ISBN: 92-9092-863-8
ISSN: 0379-6566
Abstract
We report first results of a multifrequency campaign from radio to hard X-ray energies of the prominent gamma-ray blazar 3C 279 during the first year of the INTEGRAL mission. The variable blazar was found at a low activity level, but was detected by all participating instruments. Subsequently a multifrequency spectrum could be compiled. The individual measurements as well as the compiled multifrequency spectrum are presented. In addition, this 2003 broadband spectrum is compared to one measured in 1999 during a high activity period of 3C 279.
We report first results of a multifrequency campaign from radio to hard X-ray energies of the prominent gamma-ray blazar 3C 279 during the first year of the INTEGRAL mission. The variable blazar was found at a low activity level, but was detected by all participating instruments. Subsequently a multifrequency spectrum could be compiled. The individual measurements as well as the compiled multifrequency spectrum are presented. In addition, this 2003 broadband spectrum is compared to one measured in 1999 during a high activity period of 3C 279.
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