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

被引：13

作者：

Nandi, S. ^{[1
]}

Jamrozy, M. ^{[2
]}

Roy, R. ^{[3
]}

Larsson, J. ^{[1
]}

Saikia, D. J. ^{[4
,5
]}

Baes, M. ^{[6
]}

Singh, M. ^{[7
]}

机构：

[1] AlbaNova, Dept Phys, KTH, Oskar Klein Ctr, SE-10691 Stockholm, Sweden

[2] Uniwersytet Jagiellonski, Obserwatorium Astronomiczne, Ul Orla 171, PL-30244 Krakow, Poland

[3] Stockholm Univ, Dept Astron, Oskar Klein Ctr, AlbaNova, SE-10691 Stockholm, Sweden

[4] State Univ, Cotton Coll, Panbazar 781001, Guwahati, India

[5] TIFR, Natl Ctr Radio Astrophys, Pune Univ Campus,Post Bag 3, Pune 411007, Maharashtra, India

[6] Univ Ghent, Sterrenkundig Observ, Krijgslaan 281 S9, B-9000 Ghent, Belgium

[7] Aryabhatta Res Inst Observat Sci ARIES, Manora Peak 263129, Nainital, India

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2017年 / 467卷 / 01期

基金：

美国国家科学基金会;

关键词：

line: identification; line: profiles; galaxies: active; galaxies: individual: J1328+2752; galaxies: nuclei; radio continuum: galaxies; LINE SPECTRA; SKY; CATALOG; CLASSIFICATION; J0041+3224; SCALE;

D O I：

10.1093/mnrasl/slw256

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present a radio and optical study of the double-double radio galaxy J1328+2752 based on new low-frequency Giant Metrewave Radio Telescope observations and Sloan Digital Sky Survey (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 similar to 30 degrees 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 offset of the two components is 235 +/- 10.5 kms(-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.

引用

页码：L56 / L60

页数：5

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