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

  • G. Latini (a1) (a2) (a3), S. Bosio (a1) (a2) (a3), G. DE FRANCESCO (a1) (a2) (a3), M. Villata (a1) (a2) (a3), G. Ghisellini (a1) (a2) (a3), C.M. Raiteri (a1) (a2) (a3), G. Tosti (a1) (a2) (a3), M. Fiorucci (a1) (a2) (a3), M. Maesano (a1) (a2) (a3), E. Massaro (a1) (a2) (a3), F. Montagni (a1) (a2) (a3) and R. Nesci (a1) (a2) (a3)...

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).

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References

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

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