2009AJ....138.1902O


Query : 2009AJ....138.1902O

2009AJ....138.1902O - Astron. J., 138, 1902-1910 (2009/December-0)

Simultaneous multiwavelength and optical microvariability observations of CTA 102 (PKS J2232+1143).

OSTERMAN MEYER A., MILLER H.R., MARSHALL K., RYLE W.T., ALLER H., ALLER M. and BALONEK T.

Abstract (from CDS):

We present analysis of both the short-term optical and long-term multiwavelength variability of CTA 102. In 2004, this object was observed in an intense optical flaring state. Extensive R-band microvariability observations were carried out during this high state. In 2005, we obtained several weeks of contemporaneous radio, optical, and X-ray observations of CTA 102. These observations recorded distinct flaring activity in all three wavebands. Subsequent analysis revealed that this object may appear redder when in a brighter optical state, and that the X-ray, optical, and radio activity do not appear to be correlated. The shape of the observed spectral energy distributions suggests that both synchrotron-related and external inverse Compton processes may contribute to the X-ray emission. Our results are also compared to other results on this object and archival microvariability observations. It appears that more rapid, dramatic microvariability events occur when CTA 102 is in an elevated optical flux state.

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Journal keyword(s): galaxies: active - galaxies: individual: CTA 102

Simbad objects: 7

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Number of rows : 7
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 273 BLL 12 29 06.6998257176 +02 03 08.597629980   13.05 14.830 14.11   ~ 6022 1
2 3C 279 Bla 12 56 11.16657958 -05 47 21.5251510   18.01 17.75 15.87   ~ 3205 2
3 QSO J1626-2951 Bla 16 26 06.02084013 -29 51 26.9712990   18.41 20.5 17.6   ~ 452 1
4 3C 345 Bla 16 42 58.80997043 +39 48 36.9939552   16.81 16.59 16.84   ~ 1808 3
5 4C 11.69 Bla 22 32 36.40890093 +11 43 50.9040592   17.75 17.33     ~ 1205 2
6 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2
7 NAME Cas A SNR 23 23 26.0 +58 48 41     14.30     ~ 3033 1

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