Intra-day up and down of flux density at 4.8 GHz of the quasar S5 1044+71

ATel #6046; Liu X. (XAO), Lin M.-Q.(XAO), Liu J.(XAO), Cui L.(XAO), Krichbaum T. P.(MPIfR), Bignall H.(Curtin University)
on 6 Apr 2014; 12:23 UT
Credential Certification: Xiang Liu (liux@xao.ac.cn)

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Following ATEL #5869, we observed the quasar S5 1044+71 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 rising by ~4% on 11-12 Feb. 2014, and reached a higher state before 7-9 March 2014 because a rapid decline ~6% on 7 March is detected. We show the results below, which scaled to 3c286's flux density 7.51 Jy. MJD Flux and error(Jy) -------------------------------------- 11-12/02/2014 56698.70215 2.57308 0.01695 56698.77098 2.56109 0.01842 56698.84794 2.5385 0.01781 56698.9161 2.51902 0.01831 56698.9739 2.58229 0.01742 56699.04142 2.55584 0.01763 56699.14816 2.5387 0.02101 56699.55119 2.61805 0.01788 56699.61584 2.5831 0.01711 56699.72936 2.57549 0.02279 56699.79752 2.59767 0.01791 56699.86449 2.57685 0.01906 56699.92667 2.62388 0.01829 56700.03648 2.62624 0.01735 56700.09649 2.64872 0.01732 7-9/03/2014 56723.18296 2.88723 0.01355 56723.22626 2.90215 0.01356 56723.2671 2.88614 0.01443 56723.30487 2.87966 0.01364 56723.34315 2.86674 0.01364 56723.38379 2.85974 0.01369 56723.43243 2.85985 0.01342 56723.49542 2.8803 0.01492 56723.55859 2.8515 0.01503 56723.62793 2.83846 0.01381 56723.69028 2.80265 0.01644 56723.7612 2.78792 0.0173 56723.82809 2.75091 0.0142 56723.89266 2.79443 0.01336 56723.95398 2.76297 0.0145 56724.00723 2.7417 0.01342 56724.05875 2.77383 0.01339 56724.11588 2.77939 0.01432 56724.17709 2.7937 0.01417 56724.22036 2.7605 0.01513 56724.26119 2.76592 0.01523 56724.29899 2.73916 0.01362 56724.33724 2.73731 0.01296 56724.37786 2.75739 0.01392 56724.42643 2.72225 0.01298 56724.48922 2.73575 0.01303 56724.55224 2.76394 0.01369 56724.62141 2.7763 0.01584 56724.68377 2.76071 0.01832 56724.75472 2.75573 0.0157 56724.82149 2.75325 0.01569 56724.88824 2.73113 0.01333 56724.94965 2.7497 0.01358 56725.00286 2.72168 0.01391 56725.05436 2.7272 0.01479 56725.11152 2.78027 0.01413 56725.15842 2.80813 0.01362 56725.20173 2.7793 0.01368 56725.23813 2.79281 0.01425 56725.27901 2.79986 0.01495 56725.31692 2.73853 0.01385 56725.35753 2.77029 0.01331 56725.40162 2.75473 0.01377 56725.46097 2.78445 0.01348 56725.52488 2.75492 0.01331 56725.59383 2.77727 0.01315 56725.6617 2.75077 0.01292 56725.72376 2.80192 0.01338