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Inter-day flux decline of HPQ PKS 0528+134 at 4.8 GHz

ATel #6047; Liu X., Lin M.-Q., Liu J., Cui L.(XAO), Krichbaum T. P.(MPIfR), Bignall H.(Curtin University)
on 7 Apr 2014; 05:03 UT
Credential Certification: Xiang Liu (liux@xao.ac.cn)

Subjects: Radio, AGN, Blazar, Quasar

We observed the Fermi-LAT and EGRET detected high polarization quasar PKS 0528+134 at 4.8 GHz in two Intra-day variability (IDV) sessions with the Urumqi 25m radio telescope of Xinjiang Astronomical Observatory (XAO), we find its flux is declining by ~5% in both 8-12 Feb. 2014 and 7-9 March 2014. We show the results below, which scaled to 3c286's flux density 7.51 Jy. MJD Flux and error(Jy) -------------------------------------- 08-12/02/2014 56696.44219 1.76413 0.01326 56696.49061 1.76132 0.01217 56696.59204 1.72814 0.01266 56696.67553 1.7513 0.01622 56696.74178 1.7334 0.01216 56696.81563 1.73505 0.01236 56697.44585 1.69798 0.01196 56697.5722 1.72326 0.01249 56697.63615 1.72514 0.01166 56697.71761 1.74915 0.01252 56697.78704 1.72069 0.01269 56698.52696 1.69998 0.01195 56698.58746 1.72835 0.0169 56698.67443 1.67296 0.01365 56698.74374 1.71732 0.01488 56698.81393 1.708 0.01251 56699.46327 1.67952 0.01235 56699.52175 1.64396 0.01265 56699.58502 1.66533 0.01462 56699.70129 1.66668 0.01657 56699.77058 1.68947 0.0135 07-09/03/2014 56723.3214 1.54382 0.00812 56723.35865 1.59512 0.00791 56723.40266 1.55213 0.00785 56723.45745 1.52899 0.00764 56723.5187 1.55059 0.00822 56723.58543 1.55336 0.0088 56723.65123 1.57473 0.00822 56723.72062 1.5417 0.00863 56724.35272 1.52341 0.00824 56724.39672 1.50265 0.00776 56724.45139 1.56838 0.00781 56724.51227 1.53363 0.00818 56724.57903 1.53912 0.00807 56724.64464 1.55241 0.00834 56724.71416 1.50227 0.00797 56725.37641 1.4844 0.00823 56725.42656 1.51207 0.00772 56725.48598 1.50118 0.00824 56725.55138 1.51659 0.0081 56725.62191 1.47921 0.0076 56725.68558 1.48501 0.00785