2001AJ....122.2901D

Query : 2001AJ....122.2901D

2001AJ....122.2901D - Astron. J., 122, 2901-2912 (2001/December-0)

Rapid optical variability of gamma-ray-loud blazars.

DAI B.Z., XIE G.Z., LI K.H., ZHOU S.B., LIU W.W. and JIANG Z.J.

Abstract (from CDS):

We present the optical (B, V, and R) photometry for nine GeV and/or TeV γ-ray blazars, which were observed from 2000 through 2001 with the 1 m telescope at Yunnan Astronomical Observatory. The GeV γ-ray-loud source PKS 1510-089 was very active during our observation period, showing an apparent variation of 2.0 mag within 41 minutes in the R band. This is the most violently rapid variability in our optical monitoring program since 1982. Some physics parameters are calculated for this source, namely, the emission size, Doppler factor δ, the efficiency (η) for conversion of accreted matter into energy, and luminosity. An η=62.2 was obtained, strongly implying that relativistic beaming is responsible for the rapid variability of the γ-ray-loud source. The influence of variable seeing conditions on the observations was investigated. There is a weak correlation between the observed variability and the local seeing conditions for the object 1ES 2344+51.4.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: BL Lacertae Objects: General - Galaxies: Active - Galaxies: Photometry - Galaxies: Quasars: General

CDS comments: Table 1 : standard stars for 3C 66A are [CJT75] 0219+42 A to D, for PKS 0420-01 are [RVL98] PKS 0420-014 2,4,8 and 9, for 3C 279 are [RVL98] 3C 279 1 to 5, for PKS 1510-089 are [RVL98] PKS 1510-089 1 to 6, for Mrk 501 are [VRL98] Mkn 501 1 to 5, for OJ 248 are [RVL98] OJ 248 1 to 5, for 3C 273 are [S65] E and G, for 1ES 2344+51.4 are [FTR98] 2344+514 C1 to C 3 , for Mrk 421 are [VRL98] Mkn 501 1 to 3.

Simbad objects: 54

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Number of rows : 54
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 3C 66A BLL 02 22 39.6114771888 +43 02 07.799534304   15.71 15.21 14.5   ~ 942 2
2 [CJT75] 0219+42 A * 02 22 42.9 +43 05 32   14.07 13.57     ~ 7 0
3 [CJT75] 0219+42 B * 02 22 43.3 +43 04 22   15.77 14.77     ~ 6 0
4 QSO B0420-0127 Bla 04 23 15.80072217 -01 20 33.0656073   17.50 17.00 16.28   ~ 1263 3
5 MCG-01-12-005 BLL 04 25 51.336 -08 33 38.98   15.5   16.9   ~ 45 3
6 QSO B0754+10 BLL 07 57 06.64295154 +09 56 34.8522544   15.43 15.00 15.99   ~ 461 1
7 7C 082754.29+242103.00 Bla 08 30 52.08619250 +24 10 59.8202919   17.62 17.26 16.30   ~ 563 1
8 PG 0851+202 BLL 08 54 48.8749846272 +20 06 30.639583620   15.649 15.146 15.446   ~ 2513 1
9 Z 184-50 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2841 1
10 [S65] G * 12 29.0 +02 03   14.12 13.56 13.16 12.83 ~ 7 0
11 3C 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
12 [S65] E * 12 29.2 +02 03   13.33 12.69 12.27 11.84 ~ 10 0
13 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
14 6C 141804+543700 BLL 14 19 46.5974051952 +54 23 14.787857796   16.17 15.65 14.16   ~ 630 1
15 [RVL98] PKS 1510-089 6 * 15 12 -09.1   16.09 15.16 14.61   ~ 5 0
16 [RVL98] PKS 1510-089 2 * 15 12 -09.1   13.74 13.26 12.95 12.60 ~ 6 0
17 [RVL98] PKS 1510-089 3 * 15 12 -09.1   15.16 14.44 13.98 13.54 ~ 6 0
18 [RVL98] PKS 1510-089 4 * 15 12 -09.1   15.36 14.72 14.34 13.87 ~ 6 0
19 [RVL98] PKS 1510-089 5 * 15 12 -09.1   15.43 14.70 14.35   ~ 6 0
20 [RVL98] PKS 1510-089 1 * 15 12 -08.9   12.23 11.60 11.23 10.87 ~ 6 0
21 QSO J1512-0906 Bla 15 12 50.53293048 -09 05 59.8297908   16.74 16.54     ~ 1409 1
22 ESO 514-1 BLL 15 17 41.8134049824 -24 22 19.482207024   15.13 14.00 13.95   ~ 815 3
23 [SJE91] H 1652+398 A * 16 53 47.1 +39 44 11   13.55 12.61     ~ 7 0
24 [FT96b] Mkn 501 C1 * 16 53 47.8 +39 43 12   16.05 15.30     ~ 3 0
25 Z 225-7 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2304 2
26 [FT96b] Mkn 501 C2 * 16 53 56.0 +39 45 34   16.82 15.67     ~ 3 0
27 Z 340-35 BLL 18 06 50.6802916920 +69 49 28.109609256   14.77 14.22 11.39   ~ 909 1
28 PKS J2158-3013 BLL 21 58 52.0652249880 -30 13 32.118447792   13.36 13.09 12.62   ~ 1829 1
29 [FTR98] 2344+514 C1 * 23 47 03.6 +51 43 19     12.61     ~ 3 0
30 QSO B2344+514 BLL 23 47 04.8372110928 +51 42 17.877513168     15.50 10.7   ~ 500 1
31 [FTR98] 2344+514 C3 * 23 47 08.0 +51 42 10     15.89     ~ 3 0
32 [FTR98] 2344+514 C2 * 23 47 16.8 +51 43 44     14.62     ~ 3 0
33 [RVL98] 3C 279 4 * ~ ~   16.53 15.66     ~ 3 0
34 [CJT75] 0219+42 D * ~ ~   17.78 16.90     ~ 3 0
35 [RVL98] 3C 279 5 * ~ ~   16.79 15.98     ~ 5 0
36 [VRL98] Mkn 421 2 * ~ ~   16.20 15.57     ~ 1 0
37 [RVL98] OJ 248 3 * ~ ~     14.76 14.32   ~ 4 0
38 [VRL98] Mkn 421 1 * ~ ~   15.02 14.36     ~ 1 0
39 [VRL98] Mkn 501 5 * ~ ~   16.27 15.51     ~ 1 0
40 [RVL98] 3C 279 3 * ~ ~   15.49 14.87     ~ 4 0
41 [RVL98] 3C 279 2 * ~ ~   13.73 12.99     ~ 4 0
42 [RVL98] 3C 279 1 * ~ ~   13.02 12.42     ~ 5 0
43 [RVL98] PKS 0420-014 4 * ~ ~   15.69 14.95     ~ 4 0
44 [RVL98] PKS 0420-014 2 * ~ ~   13.64 13.15     ~ 4 0
45 [VRL98] Mkn 501 3 * ~ ~   15.98 15.24     ~ 1 0
46 [CJT75] 0219+42 C * ~ ~   16.28 15.75     ~ 4 0
47 [SJE91] H 1652+398 B * ~ ~   14.10 13.23     ~ 6 0
48 [RVL98] PKS 0420-01 9 * ~ ~     16.29     ~ 2 0
49 [RVL98] OJ 248 1 * ~ ~     14.16 13.76   ~ 4 0
50 [RVL98] OJ 248 2 * ~ ~     14.71     ~ 3 0
51 [RVL98] PKS 0420-014 8 * ~ ~     15.99     ~ 3 0
52 [RVL98] OJ 248 5 * ~ ~     15.76     ~ 3 0
53 [VRL98] Mkn 421 3 * ~ ~   16.69 15.77     ~ 1 0
54 [RVL98] OJ 248 4 * ~ ~     15.59     ~ 3 0

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