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arXiv · 1902.11224

The Long-Lasting Activity in the Flat Spectrum Radio Quasar (FSRQ) CTA~102

Michael Zacharias·Markus Böttcher·Felix Jankowsky·Jean-Philippe Lenain·Stefan J. Wagner·Alicja Wierzcholska
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Abstract

The flat spectrum radio quasar CTA 102 ($z = 1.032$) went through a tremendous phase of variability. Since early 2016 the gamma-ray flux level has been significantly higher than in previous years. It was topped by a four month long giant outburst, where peak fluxes were more than 100 times higher than the quiescence level. Similar trends are observable in optical and X-ray energies. We have explained the giant outburst as the ablation of a gas cloud by the relativistic jet that injects additional matter into the jet and can self-consistently explain the long-term light curve. Here, we argue that the cloud responsible for the giant outburst is part of a larger system that collides with the jet and is responsible for the years-long activity in CTA 102.

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Michael Zacharias, Markus Böttcher, Felix Jankowsky, Jean-Philippe Lenain, Stefan J. Wagner, Alicja Wierzcholska. 2019-02-28. The Long-Lasting Activity in the Flat Spectrum Radio Quasar (FSRQ) CTA~102. https://arxiv.org/abs/1902.11224

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