Poster Presentation
The multi-band periodic variability and inter-band time lags of the SMBH binary candidate PKS J2134-0153
Presenter: Guowei Ren (University of Science and Technology of China)
Studying the periodic flux-variation behavior of blazars is vital for
probing supermassive black hole binaries and the kinematics of relativistic jets. In this work, we report the detection of the multi-band periodic variations of the blazar PKS J2134-0153, the periods ($P_{\mathrm{IR}}$$ = 1516\pm344$ days and $P_{\mathrm{V}}$$ = 1244\pm473$ days) are statistically consistent with $P_{\mathrm{radio}}$$ = 1711\pm367$ days, obtained from our previous work. Moreover, flux variations in different bands are correlated with evident inter-band time delays. The relative positions between emission regions of different bands are also estimated. The relative distances are quantitatively inconsistent with the theoretical prediction. It is implied that the electrons in the relativistic jet of this source may be produced by multi-zones or that the magnetic field in the jet is stratified.
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