S5 1803+78 Revisited

  title={S5 1803+78 Revisited},
  author={Roberto Nesci and Alessandro Maselli and Filippo Sapienza and Roma and Italy. and INAF-IASF and Palermo and Greve in Chianti Observatory},
We report on our optical monitoring of the BL Lac object S5 1803+78 from 1996 to 2011. The source showed no clear periodicity, but a time scale of about 1 300 days between major flares is possibly present. No systematic trend of the color index with flux variations is evident, at variance with other BL Lacs. In one flare, however, the source was bluer in the rising phase and redder in the falling one. Two ?-ray flares were detected by Fermi-GST during our monitoring: on the occasion of only one… 
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Multiwavelength flare observations of the blazar S5 1803+784
The radio, optical, and γ-ray light curves of the blazar S5 1803+784, from the beginning of the Fermi Large Area Telescope (LAT) mission in August 2008 until December 2018, are presented. The aim of