5 papers · 1 filter
Discovery of minute-scale polarization angle rotation in a supermassive black hole jet
Aristeidis Polychronakis, Ioannis Liodakis, Dmitry Blinov +7
Relativistic jets from supermassive black holes oriented towards our line of sight called blazars have puzzled the astronomical community for decades. Their fast jets and preferent…
Optical polarization variability and its relation to gamma-ray activity in blazars
Styliana Grigoriou, Anastasia Glykopoulou, Ioannis Liodakis
Optical polarization can be an important probe of particle acceleration and high-energy emission processes in relativistic jets from supermassive black holes. We combined publicly…
Automating the detection of polarization angle rotations in blazars. Re-analysis of RoboPol data reveals 27 new rotations
Anastasia Glykopoulou, Ioannis Liodakis, Dmitry Blinov
We present an automated pipeline for the detection of EVPA rotations in blazars, integrating correction of the 180 ambiguity, Bayesian Blocks segmentation, and statistical…
Tracking down the broadband polarimetric properties of PG 1553+113
Riccardo Middei, Svetlana G. Jorstad, Alan P. Marscher +78
We report on a nine-month monitoring campaign of the blazar PG 1553+113, relying on three observations carried out in 2025 with the Imaging X-ray Polarimetry Explorer (IXPE) and su…
Intra-night optical polarization monitoring of blazars
Aristeidis Polychronakis, Ioannis Liodakis, Anastasia Glykopoulou +20
Blazars are known for their extreme variability across the electromagnetic spectrum. Variability at very short timescales can push the boundaries between competing models offering…