Photometric monitoring of three BL Lacertae objects in 1993-1998

CORC > 云南天文台 > 中国科学院云南天文台 > 丽江天文观测站（南方基地）

	Photometric monitoring of three BL Lacertae objects in 1993-1998
	Bai JM(白金明)1,2,3 ; Xie GZ(谢光中)1,2,3 ; Li KH(李开华)1,2,3 ; Zhang X(张雄)1,3 ; Liu WW(刘威卫)1,2 ; Bai, JM
刊名	ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES
	1999-05
卷号	136 期号:3 页码:455-460
关键词	BL Lacertae objects : general BL Lac OJ 287 PRS 0735+178 galaxies : jets
ISSN号	0275-1062
通讯作者	Bai, JM
产权排序	第一完成单位
英文摘要	The results of optical photometric (BV RI) monitoring of three BL Lac objects over a time interval of about four years are presented. The sources are three classical radio-selected BL Lac objects, BL Lac, OJ 287 and PKS 0735+178. During our observation OJ 287 was in the stage of a large periodic outburst which consisted of at least two peaks. Almost all the observations obtained over consecutive nights detected intranight variations. In 1995 and 1996 BL Lac kept in faint states, with fewer and smaller rapid flares and fluctuations. On the contrary, in late 1997 BL Lac was at the stage of a large outburst, accompanied with much more large amplitude rapid flares and fluctuations. PKS 0735+178 was almost at its faint end from 1994 to early 1998. Over this time interval, the intraday variations and microvariations in PKS 0735+178 were rare and the amplitude was very small, except a rapid darkening of similar to 0.4 mag on 24 January 1995. Previous work by Webb et al. (1988); Wagner et al. (1996); Plan et al. (1997) also showed the same behaviour of variability as BL Lac and PKS 0735+178 in BL Lac, S5 0716+714, PKS 2155 - 304, respectively. We propose that the motion of orientation of the relativistic jet in a BL Lac object be responsible for these variability behaviours.
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	INTRADAY VARIABILITY ; LAC OBJECTS ; OUTBURST ; OJ-287 ; CONFIRMATION ; PKS-2155-304 ; BLAZARS ; QUASARS ; JET
收录类别	SCI
原文出处	http://aas.aanda.org/articles/aas/abs/1999/09/ds7794/ds7794.html
语种	英语
WOS记录号	WOS:000080468600004
内容类型	期刊论文
源URL	[http://ir.ynao.ac.cn/handle/114a53/5378]
专题	云南天文台_丽江天文观测站（南方基地）
通讯作者	Bai, JM
作者单位	1.Yunnan Astronomical Observatory, The Chinese Academy of Sciences, Kunming 650011, China 2.United Laboratory of Optical Astronomy, The Chinese Academy of Sciences (ULOAC), China 3.Yunnan Astrophysics Center, Kunming 650011, China
推荐引用方式 GB/T 7714	Bai JM,Xie GZ,Li KH,et al. Photometric monitoring of three BL Lacertae objects in 1993-1998[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,1999,136(3):455-460.
APA	Bai JM,Xie GZ,Li KH,Zhang X,Liu WW,&Bai, JM.(1999).Photometric monitoring of three BL Lacertae objects in 1993-1998.ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES,136(3),455-460.
MLA	Bai JM,et al."Photometric monitoring of three BL Lacertae objects in 1993-1998".ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES 136.3(1999):455-460.