摘要
收集了蝎虎天体OJ287光学B,V,R,I波段37年的观测数据,获得了从1972年至2009年的光变曲线.运用Lomb-Scargle傅里叶变换方法分析中等时标光变的周期性特性,发现存在52.0±1.1 d与255±23 d的主要周期成分,并模拟了存在倍周期分岔的准周期信号,与不同时段观测数据的相图和关联维数进行对比.结果表明,OJ287具有多周期尺度特征,不同时段准周期光变中谐波成分不同,谐波成分的变化与次黑洞对主黑洞吸积流的扰动有关,光变中的谐波成分可能是主黑洞吸积流受强扰动时分岔形成的.
In this paper, we collect the 37 years' data observed for BL Lac object OJ287 in the optical band, and construct its light curve from 1972 to 2009. Using the method of Lomb-Scargle Fourier transform, we analyze the middle time-scale periodic behavior and discover the primary periodic compositions of 52.0 ± 1.1 day and 255 ± 23 day. Then, we simulate the quasi-periodic signal of period doubling bifurcations and compare it with the observation data at different timeinterval in their phase diagram and correlation dimension. Result indicates that OJ287 has multi-period scale features.At different time-intervals, there are different harmonic period components in the quasi-periodic light curve. Variation of harmonic period component is related with the disturbance of accretion flow which is from the secondary black hole to the primary black hole, and the periodicity variability may bifurcate the harmonic period component when the primary accretion flow is influenced by a strong disturbance.
引文
[1]Hartman R C,Bertsch D L,Bloom S D 1999 Astrophys.J.Suppl.123 79
[2]Fan J H,Huang Y,Yuan Y H 2008 Chin.Phys.B 171526
[3]Valtonen M J,Mikkola S,Merritt D,Gopakumar A,Lehto H J,Hyv?nen T,Rampadarath H,Saunders R,Basta M 2010 Astrophys.J.709 725
[4]Abramowicz M A,Nobili L 1982 Nature 300 506
[5]Zhang X 1998 Ch JAA 18 260(in Chinese)[张雄1998天体物理学报18 260]
[6]Tang J,Fu M X,Zhang H J,Liu X Q 2013 Acta.Astron.Sin.54 421(in Chinese)[唐洁,傅明星,张皓晶,刘晓琴2013天文学报54 421]
[7]Tang J,Zhang X J,Pang Q,Zhang H J,Zhang Y G,Zhang X 2009 Acta.Astron.Sin.50 364(in Chinese)[唐洁,张晓娟,庞桥,张皓晶,郑永刚,张雄2009天文学报50 364]
[8]Xun Y B,Zhang H J,Zhang X 2013 Journal of Yunnan Normal University.33 9(in Chinese)[徐云冰,张皓晶,张雄2013云南师范大学学报:自然科学版33 9]
[9]Valtonen M J,Mikkola S,Lehto H J,Gopakumar A,Hudec R,Polednikova J 2011 Astrophys.J.742 22
[10]Su C Y 2004 Chin.Phys.B.13 1375
[11]Wu J,Zhou X,Wu X B,Liu F K,Peng B,Ma J,Wu Z Y,Jiang Z J,Chen J S 2006 Astronomy.J.132 1256
[12]Valtonen M J,Wiik K 2012 Mon.Not.R.Astron.4211861
[13]Tang J 2014 Sci.Sin.Phys.G.44 865(in Chinese)[唐洁2014中国科学G辑44 865]
[14]Carrasco L,Dultzin-hacyan D,Bruz-Gonzalez I 1985Nature 314 146
[15]Valtonen M J,Nilsson K,Villforth C,Lehto H J,Takalo L O,Lindfors E,Sillanp??A,Hentunen V,Mikkola S,Zola S,Drozdz M,Koziel D,Ogloza W,KurpinskaWiniarska M,Siwak M,Winiarski M,Heidt J,Kidger M,Pursimo T,Wu J,Zhou X,Sadakane K,Marchev D,Nissinen M,Niarchos P,Liakos A,Gazeas K,Dogru S,Poyner G,Dietrich M,Assef R,Atlee D,Bird J,De Poy D,Eastman J,Peeples M,Prieto J,Watson L,Yee J,Mattingly A,Ohlert J 2009 Astrophys.J.698 781
[16]Pihajoki P,Valtonen M J,Ciprini S 2013 Mon.Not.R.Astron.434 3122
[17]Tang J 2014 Acta.Phys.Sin.63 049701(in Chinese)[唐洁2014物理学报63 049701]
[18]Libchaber A,Mauer J 1980 Journal de Physique.41 51
[19]Lauterborn W,Cramer E 1981 Phys.Rev.Lett.47 1445
[20]Schuster H G(translated by Hong X Z)2010 An introduction of chaos(Si Chuan:Education Press of Si Chuan)pp73–74(in Chinese)[H.G舒斯特著(朱鋐雄译)2010混沌学引论(四川:四川教育出版社)第73—74页]
[21]Chen F S,Jiang S Y 1993 Progress In Astronomy.11217(in Chinese)[陈福生,蒋世仰1993天文学进展11217]
[22]Xu B,Yang T,Tan B H,Chen Y 2011 Nuclear Electronics&Detection Technology 31 702(in Chinese)[徐斌,杨涛,谭保华,陈益2011核电子学与探测技术31 702]
[23]Horne J H,Baliunas S L 1986 Astrophys.J.302 757
[24]Packard N H,Crutchfield J P,Farmer J D,Shaw R S1980 Phy.Rev.Lett.45 712
[25]Harikrishnan K P,Misra R,Ambika G,Kembhavi A K2006 Physica.D 215 137
[26]Ou J W,Zhang H J,Zheng Y G,Zhang X 2014 Acta.Phys.Sin.63 049801(in Chinese)[欧健文,张浩晶,郑永刚,张雄2014物理学报63 049801]
[27]Jia G B,Cen X F,Ma H Y,Wang J C 2008 Astron.Astrophys.Suppl 129 569
[28]Zheng Y G,Zhang X,Bi X W,Hao J M,Zhang H J2008 Mon.Not.R.Astron.385 823
[29]Villforth C,Nilsson K,Heidt J,Takalo L O,Pursimo T,Berdyugin A,Lindfors E,Pasanen M,Winiarski M,Drozdz M,Ogloza W,Kurpinska-Winiarska M,Siwak M,Koziel-Wierzbowska D,Porowski C,Kuzmicz A,Krzesinski J,Kundera T,Wu J,Zhou X,Efimov Y,Sadakane K,Kamada M,Ohlert J,Hentunen V,Nissinen M,Dietrich M,Assef R J,Atlee D W,Bird J,Depoy D L,Eastman J,Peeples M S,Prieto J,Watson L,Yee J C,Liakos A,Niarchos P,Gazeas K,Dogru S,Donmez A,Marchev D,Coggins-Hill S A,Mattingly A,Keel W C,Haque S,Aungwerojwit A,Bergvall N 2010 Mon.Not.R.Astron.402 2087
[30]Lehto H,Valtonen M J 1996 Astrophys.J.460 207
[31]Sundelius B,Wahde M,Lehto H J,Valtonen M J 1997Astrophys.J.484 180
[32]Cao X W,Zhang J L 1993 Acta.Astron.Sin.34 366(in Chinese)[曹新伍,张家铝1993天文学报34 366]
[33]Wu S Q,Zhang Y,Fu Z W 2012 Acta.Astron.Sin.53186(in Chinese)[武曙光,张杨,付正文2012天文学报53 186]
[34]Grassberger P,Procaccia I 1983 Physica.D 9 189
[35]Yonehara A,Mineshige S 1997 Astrophys.J.486 388
[36]Ou J W,Zheng Y G,Zhang X 2014 Acta.Phys.Sin.63239801(in Chinese)[欧健文,郑永刚,张雄2014物理学报63 239801]
[37]Sillanp A,Takalo L O,Pursimo T,Nilsson K,Heinamaki P,Katajainen S,Pietila H,Hanski M,Rekola R,Kidger M,Boltwood P,Turner G W,Robertson J W,Honeycut R K,Efimov Y S,Shakhovskoy N,Fiorucci M,Tosti G,Ghisellini G,Raiteri C M,Villata M,de Francesco G,Lanteri L,Chiaberge M,Peila A,Heidt J1996 Astron.Astrophys.305L 13
[38]Zhang X,Zheng Y G,Zhang H J,Hu S M,Xie Z H 2006Chin.Phys.15 2185