SMBH binary candidate PKS J2134−0153: possible multi-band periodic variability and inter-band time lags

ABSTRACT Studying the periodic flux-variation behaviour of blazars is vital for probing supermassive black hole binaries and the kinematics of relativistic jets. In this work, we report the detection of multi-band possible periodic variations of the blazar PKS J2134−0153, including infrared ($1.6(\pm 0.4)\times 10^3$ day) and optical ($1.8(\pm 1)\times 10^3$ day) wavelengths. The periods in the infrared and optical bands are statistically consistent with the period in the radio band ($P_{\mathrm{Radio}} = 1760\pm 33$ days, obtained from our previous work). Moreover, flux variations in different bands are correlated with evident inter-band time delays, and the time lags of infrared and optical emission with respect to radio emission are $(3.3\pm 2.3)\times 10^{2}$ days and $(3.0\pm 2.3)\times 10^{2}$ days, respectively. The cross-correlations indicate a common origin of radio, infrared, and optical emission. The relative positions between emission regions of infrared and optical emission and radio emission are estimated according to the time lags, i.e. $0.37\pm 0.26$ and $0.33\pm 0.26$ pc. The relative distances seem to be quantitatively consistent with the theoretical prediction.

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Publication Details

Journal
Monthly Notices of the Royal Astronomical Society
Published
2025-02-07
DOI
https://doi.org/10.1093/mnras/stae2553
Citations
2
Primary Topic
Astrophysics and Cosmic Phenomena
Type
article
Field-Weighted Citation Impact
3.74

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article

SMBH binary candidate PKS J2134−0153: possible multi-band periodic variability and inter-band time lags

Nan Ding, Xing Yang, Guowei Ren, Mouyuan Sun et al.
2 citations
Monthly Notices of the Royal Astronomical Society
Astrophysics and Cosmic Phenomena
3.74
article

SMBH binary candidate PKS J2134−0153: possible multi-band periodic variability and inter-band time lags

Nan Ding, Xing Yang, Guowei Ren, Mouyuan Sun, Zhi-Xiang Zhang
article en
2 citations

Abstract

ABSTRACT Studying the periodic flux-variation behaviour of blazars is vital for probing supermassive black hole binaries and the kinematics of relativistic jets. In this work, we report the detection of multi-band possible periodic variations of the blazar PKS J2134−0153, including infrared ($1.6(\pm 0.4)\times 10^3$ day) and optical ($1.8(\pm 1)\times 10^3$ day) wavelengths. The periods in the infrared and optical bands are statistically consistent with the period in the radio band ($P_{\mathrm{Radio}} = 1760\pm 33$ days, obtained from our previous work). Moreover, flux variations in different bands are correlated with evident inter-band time delays, and the time lags of infrared and optical emission with respect to radio emission are $(3.3\pm 2.3)\times 10^{2}$ days and $(3.0\pm 2.3)\times 10^{2}$ days, respectively. The cross-correlations indicate a common origin of radio, infrared, and optical emission. The relative positions between emission regions of infrared and optical emission and radio emission are estimated according to the time lags, i.e. $0.37\pm 0.26$ and $0.33\pm 0.26$ pc. The relative distances seem to be quantitatively consistent with the theoretical prediction.

Monthly Notices of the Royal Astronomical SocietyVol. 537(3)
Kunming University (CN), Guangxi University (CN), Xiamen University (CN)
National Science Foundation, Smithsonian Institution, National Aeronautics and Space Administration, Yale University, Carnegie Institution of Washington, Vanderbilt University, New York University, Ohio State University, California Institute of Technology, University of Wisconsin-Madison, Northwestern University, University of Utah, University of Washington, Johns Hopkins University, University of Arizona, Carnegie Mellon University, University of Notre Dame, Pennsylvania State University, University of Virginia, University of Maryland, University of Portsmouth, New Mexico State University, Space Telescope Science Institute, University of Warwick, University of Oxford, Queen's University Belfast, National Natural Science Foundation of China, Queen's University, Natural Science Foundation of Fujian Province, Ministério da Ciência, Tecnologia e Inovação, Nuclear Safety and Security Commission, University of Tokyo, Stockholms Universitet, Max-Planck-Institut für Astronomie, Jet Propulsion Laboratory, University of Colorado Boulder, Smithsonian Astrophysical Observatory, Science Mission Directorate, Science and Technology Facilities Council, Deutsches Elektronen-Synchrotron, Leibniz-Gemeinschaft, Institut National de Physique Nucléaire et de Physique des Particules, Lawrence Berkeley National Laboratory
Openalex Percentile: Top 9%
Astrophysics and Cosmic Phenomena
3.74
DOIOpen Access PDFOpenAlex
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