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The variable V381 Lac and its possible connection with the R CrB phenomenon
Corinne Rossi, Flavia Dell'Agli, Andrea Di Paola +2
We have performed new medium resolution spectroscopy, optical and near infrared photometry to monitor the variability of the AGB carbon star V 381 Lac. Our observations revealed ra…
First X-ray dectection of the young variable V1180 Cas
S. Antoniucci, A. A. Nucita, T. Giannini +8
V1180 Cas is a young variable that has shown strong photometric fluctuations (Delta_I~6mag) in the recent past, which have been attributed to events of enhanced accretion. The sour…
A multi-wavelength polarimetric study of the blazar CTA 102 during a Gamma-ray flare in 2012
Carolina Casadio, José L. Gómez, Svetlana G. Jorstad +28
We perform a multi-wavelength polarimetric study of the quasar CTA 102 during an extraordinarily bright -ray outburst detected by the {\it Fermi} Large Area Telescope in Septemb…
The WEBT campaign on the BL Lac object PG 1553+113 in 2013. An analysis of the enigmatic synchrotron emission
C. M. Raiteri, A. Stamerra, M. Villata +2
A multifrequency campaign on the BL Lac object PG 1553+113 was organized by the Whole Earth Blazar Telescope (WEBT) in 2013 April-August, involving 19 optical, two near-IR, and thr…
Discovery of a Highly Polarized Optical Microflare in the Blazar S5 0716+714 During 2014 WEBT Campaign
Gopal Bhatta, Arti Goyal, Michal Ostrowski +42
The occurrence of low-amplitude flux variations in blazars on hourly timescales, commonly known as microvariability, is still a widely debated subject in high-energy astrophysics.…
Multiwavelength behaviour of the blazar OJ 248 from radio to γ-rays
M. I. Carnerero, C. M. Raiteri, M. Villata +4
We present an analysis of the multiwavelength behaviour of the blazar OJ 248 at z = 0.939 in the period 2006-2013. We use low-energy data (optical, near-infrared, and radio) obtain…