The BL Lac PG 1553+113: a supermassive binary black hole candidate

被引：0
|
作者：
Munar-Adrover, Pere [1 ,2 ]
Tavani, Marco [3 ,4 ,5 ,6 ]
Cavaliere, Alfonso [3 ]
Argan, Andrea [3 ]
机构：
[1] Univ Autonoma Barcelona, Dept Fis, Unitat Fis Radiac, Bellaterra 08193, Spain
[2] Univ Autonoma Barcelona, CERES IEEC, Bellaterra 08193, Spain
[3] INAF IAPS Roma, Via Fosso Cavaliere 100, I-00133 Rome, Italy
[4] Astron Acad Nazl Lincei, Via Lungara 10, I-00165 Rome, Italy
[5] Univ Tor Vergata, Dipartimento Fis, Via Ric Sci 1, I-00133 Rome, Italy
[6] Gran Sasso Sci Inst, Viale Francesco Crispi 7, I-67100 Laquila, Italy
来源：
RENDICONTI LINCEI-SCIENZE FISICHE E NATURALI | 2019年 / 30卷 / SUPPL 1期
关键词：
Astrophysics; Gamma rays; Active galactic nuclei;
D O I：
10.1007/s12210-019-00816-6
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：
We present updated observations of the blazar PG 1553+113, a bright BL Lac Object that yields quasi-periodic gamma-ray emission every 2.2 years, strongly suggesting the activity of a super-massive binary black hole. Such binary systems are widely held to emit low-frequency gravitational waves. Confirming the binary nature of PG 1553+113 is very relevant for upcoming searches of nHz gravitational waves.
引用
收藏
页码：145 / 148
页数：4
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