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Rapid Infrared and Optical Variability in 3C 273

Published online by Cambridge University Press:  07 August 2017

E. I. Robson ,
T.J.-L. Courvoisier  and
P. Bouchet
E. I. Robson
Affiliation:
School of Physics & Astronomy, Lancashire Polytechnic, Preston PR1 2TQ, UK
T.J.-L. Courvoisier
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland
P. Bouchet
Affiliation:
ESO, Casilla 19001, Santiago 19, Chile

Extract

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The quasar 3C273 varied by up to 100% on timescales as short as one day in the optical and IR domains during February and March 1988. In February the source changed from a behavior characterised by a stable IR flux and slow optical variations to one of recurrent optical and IR flares. Five optical flares, of amplitude up to 30–40% were observed, along with two IR flares, both of which were simultaneous with optical events. The second IR flare on March 9th rose from 46mJy to 66mJy (twice the normal (quiescent) value) in one day. The data and some of their implications are described in Courvoisier et al. (1988).

Type
Part 2: BLR and Variability
Information
Symposium - International Astronomical Union , Volume 134: Active Galactic Nuclei , 1989 , pp. 110 - 111
Copyright
Copyright © Kluwer 1989 

References

Courvoisier, T.J-L. et al. 1988, submitted to Nature Google Scholar