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Open AccessJournal ArticleDOI

Orbital motion in the radio galaxy 3C 66B: evidence for a supermassive black hole binary.

Hiroshi Sudou, +3 more
- 23 May 2003 - 
- Vol. 300, Iss: 5623, pp 1263-1265
TLDR
Using the very-long-baseline interferometer, it is found that the unresolved radio core of 3C 66B shows well-defined elliptical motions with a period of 1.05 ± 0.03 years, which provides a direct detection of a supermassive black hole binary.
Abstract
Supermassive black hole binaries may exist in the centers of active galactic nuclei such as quasars and radio galaxies, and mergers between galaxies may result in the formation of supermassive binaries during the course of galactic evolution. Using the very-long-baseline interferometer, we imaged the radio galaxy 3C 66B at radio frequencies and found that the unresolved radio core of 3C 66B shows well-defined elliptical motions with a period of 1.05 ± 0.03 years, which provides a direct detection of a supermassive black hole binary.

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Citations
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3C 223.1: A source with unusual spectral properties

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References
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Journal ArticleDOI

Inward Bound—The Search for Supermassive Black Holes in Galactic Nuclei

TL;DR: In this paper, the authors review dynamical search techniques, the robustness of the evidence, and BH demographics, and find that supermassive black holes are present in 20% of nearby E-Sbc galaxies.
Journal ArticleDOI

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TL;DR: In this article, ground-based observations of a complete sample of 10 of these infrared galaxies suggest that they represent the initial dust-enshrouded stages of quasars, and a second group of ultraluminous objects selected on the basis of warm infrared colors are found to be preferentially Seyfert galaxies.
Book

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Journal ArticleDOI

Massive black hole binaries in active galactic nuclei

TL;DR: In this article, the authors explore the possibility that some active galactic nuclei may contain two massive black holes in orbit about each other, which suggests a new interpretation for the observed bending and apparent precession of radio jets emerging from these objects.
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