Ringo2 Optical Polarimetry of Blazars
AbstractWe present polarimetric and photometric observations from a sample of 15 γ-ray bright blazars with data from the Tuorla blazar monitoring program (KVA DIPOL) and Liverpool Telescope (LT) Ringo2 polarimeters (supplemented with γ-ray data from Fermi-LAT). We find that (1) The optical magnitude and γ-ray flux are positively correlated; (2) electric vector position angle rotations can occur in any blazar subclass; (3) there is no difference in the γ-ray flaring rates in the sample between subclasses; flares can occur during and outside of rotations with no preference for this behaviour; (4) the average degree of polarisation (P), optical magnitude and γ-ray flux are lower during a rotation compared with during non-rotation; (5) the number of observed flaring events and optical polarisation rotations are correlated and (6) the maximum observed P increases from ∼10% to ∼30% to ∼40% for subclasses with synchrotron peaks at high, intermediate and low frequencies respectively. View Full-Text
Share & Cite This Article
Jermak, H.; Steele, I.; Lindfors, E.; Hovatta, T.; Nilsson, K.; Lamb, G.; Mundell, C.; Barres De Almeida, U.; Berdyugin, A.; Kadenius, V.; Reinthal, R.; Takalo, L. Ringo2 Optical Polarimetry of Blazars. Galaxies 2016, 4, 52.
Jermak H, Steele I, Lindfors E, Hovatta T, Nilsson K, Lamb G, Mundell C, Barres De Almeida U, Berdyugin A, Kadenius V, Reinthal R, Takalo L. Ringo2 Optical Polarimetry of Blazars. Galaxies. 2016; 4(4):52.Chicago/Turabian Style
Jermak, Helen; Steele, Iain; Lindfors, Elina; Hovatta, Talvikki; Nilsson, Kari; Lamb, Gavin; Mundell, Carole; Barres De Almeida, Ulisses; Berdyugin, Andrei; Kadenius, Ville; Reinthal, Riho; Takalo, Leo. 2016. "Ringo2 Optical Polarimetry of Blazars." Galaxies 4, no. 4: 52.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.