Double-peaked Lines, Dual VLBI Components, and Precessing Jets in J1328+2752

Autor(es)

Nandi, S. ^[1] ; Caproni, A. ^[2] ; Kharb, P. ^[1] ; Sebastian, B. ^[1] ; Roy, R. ^[3]

Afiliação do(s) autor(es)

^[1] Tata Inst Fundamental Res, Natl Ctr Radio Astrophys, SP Pune Univ Campus, Post Bag 3, Pune 411007, Maharashtra - India

^[2] Nucleo Astrofis, Univ Cidade Sao Paulo R Galvao Bueno 868, BR-01506000 Sao Paulo, SP - Brazil

^[3] Interuniv Ctr Astron & Astrophys, SP Pune Univ Campus, Pune 411007, Maharashtra - India

• Tipo de documento: Artigo Científico
• Fonte: ASTROPHYSICAL JOURNAL; v. 908, n. 2 FEB 2021.
• Citações Web of Science: 0

Resumo

In this work, we report a radio galaxy with precessing jets, double-peaked emission lines and the presence of two compact radio components with a projected separation of similar to 6 parsec in very long baseline interferometry (VLBI) observations. The emission-line peak separations could be suggesting the presence of a supermassive binary black hole (BBH) with a separation of 6.3 parsec, matching the VLBI results. The kinematic jet precession model applied to the jets of J1328+2752 indicates that if it is a BBH, the accretion disk of the primary black hole is not coplanar with the binary system orbit, making its jet precess under the effect of the torque produced by the secondary black hole. However, we find that the Bardeen-Petterson effect can also provide precession timescales compatible with the jet precession period inferred in this source. This source has previously been identified as a restarted double-double radio galaxy (DDRG). Our findings therefore have important ramifications for the nature of DDRGs in general. (AU)

• Processo FAPESP: 17/25651-5 - Estudos numéricos de objetos extragalácticos no universo local e em altos redshifts
• Beneficiário: Anderson Caproni
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 14/11156-4 - O que determina o crescimento da massa estelar de galáxias elípticas? Intrínseco ou ambiente: a saga contínua
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• Modalidade de apoio: Auxílio à Pesquisa - Temático