Robopol: Optical polarisation monitoring of blazars
Emmanouil Angelakis, Dmitry Blinov, Markus B\"ottcher, Talvikki, Hovatta, Sebastian Kiehlmann, Ioannis Myserlis, Vassiliki Pavlidou, J. Anton, Zensus
TL;DR
The RoboPol program systematically monitored optical polarization in blazars to study their polarization behavior and its relation to high-energy flaring activity over three years.
Contribution
This study presents the RoboPol program's methodology and initial findings on optical polarization variability in gamma-ray-loud and quiet blazars.
Findings
Detected long rotations of polarization angle in blazars
Analyzed correlation between polarization changes and gamma-ray flares
Provided insights into the polarization behavior of blazars
Abstract
The RoboPol program has been monitoring the -band linear polarisation parameters of an unbiased sample of 60 gamma-ray-loud blazars and a "control" sample of 15 gamma-ray-quite ones. The prime drive for the program has been the systematic study of the temporal behaviour of the optical polarisation and particularly the potential association of smooth and long rotations of the polarisation angle with flaring activity at high energies. Here we present the program and discuss a list of selected topics from our studies of the first three observing seasons (2013--2015) both in the angle and in the amplitude domain.
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Taxonomy
TopicsAstrophysics and Cosmic Phenomena · Radio Astronomy Observations and Technology · Dark Matter and Cosmic Phenomena