
%0 Journal Article
%A Rector, Travis 
%A Perlman, Eric 
%A Sambruna, Rita 
%A Madejski, Greg 
%A Rantakyro, Frederik 
%A collaboration, CANGAROO 
%T Multifrequency Monitoring of the Blazar PKS 2005-489
%J Publications of the Astronomical Society of Australia
%D 2002/06/28
%V 19
%N 1
%P 158-160
%K BL Lacertae objects: individual &#40;PKS 2005&#8211;489&#41;
%R https://doi.org/10.1071/AS01115
%U https://www.publish.csiro.au/paper/AS01115 
%X We present a multifrequency monitoring campaign of PKS 2005&#8211;489, a bright and highly variable blazar. Simultaneous observations were completed over a 13 day period in the X-ray with RXTE, in the optical at the CTIO 0.9 m telescope, at TeV energies with CANGAROO-II, and at submillimetre wavelengths with SEST. Previous multiwavelength monitoring campaigns of PKS 2005&#8211;489 and other blazars have found complex flux and spectral variability behaviour, with different modes and timescales from days to hours and shorter. PKS 2005&#8211;489 was observed in transition from a quiescent state into the early stages of a flare. A gradual increase in flux density was observed at optical and X-ray wavelengths during 19&#8211;27 August 2000, and a dramatic increase in X-ray emission was observed starting on 2 September 2000. Intraday and spectral variability were not detected during the campaign. 
