A1 Refereed original research article in a scientific journal
The VHE gamma-Ray View of the FSRQ PKS 1510-089
Authors: Zacharias M, Prester DD, Jankowsky F, Lindfors E, Meyer M, Mohamed M, Prokoph H, Sanchez D, Sitarek J, Terzic T, Wagner S, Wierzcholska A
Publisher: MDPI
Publication year: 2019
Journal: Galaxies
Journal name in source: GALAXIES
Journal acronym: GALAXIES
Article number: ARTN 41
Volume: 7
Issue: 1
Number of pages: 11
ISSN: 2075-4434
DOI: https://doi.org/10.3390/galaxies7010041
Web address : https://www.mdpi.com/2075-4434/7/1/41
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/40242428
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) gamma-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 gamma-ray counterparts evolve differently than the VHE flux.
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