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Symposium - International Astronomical Union Symposium - International Astronomical Union

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Optical Monitoring of the Gamma–Ray Loud BL Lac Object S5 0716+714

Published online by Cambridge University Press:  25 May 2016

G. Latini ,
S. Bosio ,
G. DE FRANCESCO ,
M. Villata ,
G. Ghisellini ,
C.M. Raiteri ,
G. Tosti ,
M. Fiorucci ,
M. Maesano ,
E. Massaro ,
F. Montagni  and
R. Nesci
G. Latini
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
S. Bosio
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
G. DE FRANCESCO
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
M. Villata
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
G. Ghisellini
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
C.M. Raiteri
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
G. Tosti
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
M. Fiorucci
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
M. Maesano
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
E. Massaro
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
F. Montagni
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
R. Nesci
Affiliation:
Osservatorio Astronomico di Torino, Pino Torinese, Italy Università di Perugia, Via Pascoli, I-06100 Perugia, Italy Istituto Astronomico, Università La Sapienza, Roma, Italy
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Extract

We monitored the γ-ray loud BL Lac object S5 0716+714 between November 1994 and April 1995 (J.D. 2449671–2449838), from the Observatories of Torino, Perugia and Roma. The source was always active in the R and B bands, showing a particularly high optical state during the period of the CGRO pointing (February 14–28, 1995). The lightcurve in the R band is presented in Fig. 1. The complete set of observations is discussed in Ghisellini et al. (1995).

Type
Relation between Radio and Other Wavelenghts
Information
Symposium - International Astronomical Union , Volume 175: Extragalactic Radio Sources , 1996 , pp. 289 - 290
Copyright
Copyright © Kluwer 1996 

References

Ghisellini, G. et al., 1995, in preparation Google Scholar
Quirrenbach, A. et al., 1991, ApJ , 372, L71 CrossRefGoogle Scholar
Schalinski, C.J. et al., 1992, in Variability in Blazars, eds. Valtaoja, E. & Valtonen, M., (CUP), p. 221 Google Scholar
von Montigny, C. et al., 1995, ApJ , 440, 525 CrossRefGoogle Scholar
Wagner, S. et al., 1995, AJ , in press Google Scholar

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