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The VHE γ-Ray View of the FSRQ PKS 1510-089

1
Ruhr Astroparticle and Plasma Physics Center (RAPP Center), Insitut für theoretische Physik IV, Ruhr-Universität Bochum, D-44780 Bochum, Germany
2
Centre for Space Science, North-West University, Potchefstroom 2520, South Africa
3
Croatian MAGIC Consortium, Rudjer Boskovic Institute, University of Rijeka, University of Split and University of Zagreb, 10000 Zagreb, Croatia
4
Landessternwarte, Universität Heidelberg, Königstuhl, D-69117 Heidelberg, Germany
5
Finnish MAGIC Consortium, Tuorla Observatory, University of Turku and Astronomy Division, University of Oulu, 90014 Oulun, Finland
6
W. W. Hansen Experimental Physics Laboratory, Kavli Institute for Particle Astrophysics and Cosmology, Department of Physics and SLAC National Accelerator Laboratory, Stanford University, Stanford, CA 94305, USA
7
DESY, D-15738 Zeuthen, Germany
8
Laboratoire d’Annecy-le-Vieux de Physique des Particules, Universite Savoie Mont-Blanc, CNRS/IN2P3, 74941 Annecy-le-Vieux, France
9
Department of Astrophysics, University of Lodz, 90236 Lodz, Poland
10
Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Krakow, Poland
*
Author to whom correspondence should be addressed.
Galaxies 2019, 7(1), 41; https://doi.org/10.3390/galaxies7010041
Received: 31 January 2019 / Revised: 13 March 2019 / Accepted: 15 March 2019 / Published: 20 March 2019
(This article belongs to the Special Issue Monitoring the Non-Thermal Universe)
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Abstract

The flat spectrum radio quasar PKS 1510-089 is a monitored target in many wavelength bands due to its high variability. It was detected as a very-high-energy (VHE) γ-ray emitter with H.E.S.S. in 2009, and has since been a regular target of VHE observations by the imaging Cherenkov observatories H.E.S.S. and MAGIC. In this paper, we summarize the current state of results focusing on the monitoring effort with H.E.S.S. and the discovery of a particularly strong VHE flare in 2016 with H.E.S.S. and MAGIC. While the source has now been established as a weak, but regular emitter at VHE, no correlation with other energy bands has been established. This is underlined by the 2016 VHE flare, where the detected optical and high-energy γ-ray counterparts evolve differently than the VHE flux. View Full-Text
Keywords: active galactic nuclei; blazar variability; multi-wavelength; correlation active galactic nuclei; blazar variability; multi-wavelength; correlation
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Zacharias, M.; Dominis Prester, D.; Jankowsky, F.; Lindfors, E.; Meyer, M.; Mohamed, M.; Prokoph, H.; Sanchez, D.; Sitarek, J.; Terzic, T.; Wagner, S.; Wierzcholska, A.; on behalf of the H.E.S.S. and MAGIC Collaborations. The VHE γ-Ray View of the FSRQ PKS 1510-089. Galaxies 2019, 7, 41.

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