Confirmed short periodic variability of subparsec supermassive binary black hole candidate Mrk 231

13 Mar 2020 Kovacevic Andjelka B. Yi Tignfeng Dai Xinyu Yang Xing Cvorovic-Hajdinjak Iva Popovic Luka C.

Here we confirm the short periodic variability of a subparsec supermassive binary black hole (SMBBH) candidate Mrk 231 in the extended optical photometric data set collected by the Catalina Real-Time Transient Survey (CRTS) and All-Sky Automated Survey for Supernovae (ASAS-SN). Using the Lomb-Scargle periodogram and 2DHybrid method, we detected the significant periodicity of ~ 1.1 yr beyond a damped random walk model in the CRTS+ASAS-SN optical data set... (read more)

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Categories


  • ASTROPHYSICS OF GALAXIES
  • HIGH ENERGY ASTROPHYSICAL PHENOMENA