Radio Galaxy Zoo Talk

Tale of J1328+2752: a misaligned double-double radio galaxy hosted by a binary black-hole

  • zutopian by zutopian

    Tale of J1328+2752: a misaligned double-double radio galaxy hosted by a binary black-hole?
    S. Nandi, M. Jamrozy, R. Roy, J. Larsson, D.J. Saikia, M. Baes, M. Singh

    We present a radio and optical study of the double-double radio galaxy J1328+2752 based on new low-frequency GMRT observations and SDSS data. The radio data were used to investigate the morphology and to perform a spectral index analysis. In this source we find that the inner double is misaligned by ∼ 30 ∘ from the axis of the outer diffuse structure. The SDSS spectrum shows that the central component has double-peaked line profiles with different emission strengths. The average velocity off-set of the two components is 235± 10.5 km s −1 . The misaligned radio morphology along with the double-peaked emission lines indicate that this source is a potential candidate binary supermassive black hole. This study further supports mergers as a possible explanation for repeated jet activity in radio sources.

    https://arxiv.org/abs/1612.06452
    (Submitted on 19 Dec 2016)

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