A massive binary black-hole system in OJ 287 and a test of general relativity

	A massive binary black-hole system in OJ 287 and a test of general relativity
	Valtonen, M. J.1,2; Lehto, H. J.1,2; Nilsson, K.2; Heidt, J.3; Takalo, L. O.1,2; Sillanpaa, A.1,2; Villforth, C.1,2; Kidger, M.4,5; Poyner, G.6; Pursimo, T.7
刊名	NATURE
	2008-04-17
卷号	452 期号:7189 页码:851-853
英文摘要	Tests of Einstein's general theory of relativity have mostly been carried out in weak gravitational fields where the space- time curvature effects are first- order deviations from Newton's theory(1-6). Binary pulsars(4) provide a means of probing the strong gravitational field around a neutron star, but strong- field effects may be best tested in systems containing black holes(7,8). Here we report such a test in a close binary system of two candidate black holes in the quasar OJ 287. This quasar shows quasi- periodic optical outbursts at 12- year intervals, with two outburst peaks per interval(9,10). The latest outburst occurred in September 2007, within a day of the time predicted by the binary black- hole model and general relativity(11). The observations confirm the binary nature of the system and also provide evidence for the loss of orbital energy in agreement ( within 10 per cent) with the emission of gravitational waves from the system(12). In the absence of gravitational wave emission the outburst would have happened 20 days later(13).
收录类别	SCI
语种	英语
WOS记录号	WOS:000255026000043
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/7410]
专题	国家天文台_光学天文研究部
作者单位	1.Univ Turku, Dept Phys, FI-21500 Piikkio, Finland 2.Univ Turku, Tuorla Observ, FI-21500 Piikkio, Finland 3.Landessternwarte Heidelberg, D-69117 Heidelberg, Germany 4.European Space Agcy, European Space Astron Ctr, Herschel Sci Ctr, Villafrance Castillo Satellite Tracking Stn, Madrid 28691, Spain 5.INSA, Madrid 28008, Spain 6.British Astron Assoc Variable Star Sect, Birmingham B44 0QE, W Midlands, England 7.Nord Opt Telescope, E-38700 S C La Palma, Spain 8.Jagiellonian Univ, Astron Observ, PL-30224 Krakow, Poland 9.Pedagog Univ, Mt Suhora Observ, PL-30084 Krakow, Poland 10.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Valtonen, M. J.,Lehto, H. J.,Nilsson, K.,et al. A massive binary black-hole system in OJ 287 and a test of general relativity[J]. NATURE,2008,452(7189):851-853.
APA	Valtonen, M. J..,Lehto, H. J..,Nilsson, K..,Heidt, J..,Takalo, L. O..,...&Dogru, S..(2008).A massive binary black-hole system in OJ 287 and a test of general relativity.NATURE,452(7189),851-853.
MLA	Valtonen, M. J.,et al."A massive binary black-hole system in OJ 287 and a test of general relativity".NATURE 452.7189(2008):851-853.