A candidate sub-parsec supermassive binary black hole system

被引：181
|
作者：
Boroson, Todd A. [1 ]
Lauer, Tod R. [1 ]
机构：
[1] Natl Opt Astron Observ, Tucson, AZ 85726 USA
来源：
NATURE | 2009年 / 458卷 / 7234期
基金：
美国国家航空航天局;
关键词：
DIGITAL-SKY-SURVEY; QUASARS; SPECTRA; OJ-287;
D O I：
10.1038/nature07779
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The role of mergers in producing galaxies, together with the finding that most large galaxies harbour black holes in their nuclei(1), implies that binary supermassive black hole systems should be common. Here we report that the quasar SDSS J153636.22+ 044127.0 is a plausible example of such a system. This quasar shows two broad-line emission systems, separated in velocity by 3,500km s(-1). A third system of unresolved absorption lines has an intermediate velocity. These characteristics are unique among known quasars. We interpret this object as a binary system of two black holes, having masses of 10(7.3) and 10(8.9) solar masses separated by similar to 0.1 parsec with an orbital period of similar to 100 years.
引用
收藏
页码：53 / 55
页数：3
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