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arXiv · 1509.06851

Discovery of VHE gamma-rays from the radio galaxy PKS 0625-354 with H.E.S.S

Michal Dyrda·Alicja Wierzcholska·Olivier Hervet·Rafal Moderski·Mateusz Janiak·Michał Ostrowski·Łukasz Stawarz
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Abstract

Most of the extragalactic objects detected so far in the very high energy (VHE) regime are blazars, but the discovered nearby radio galaxies: M87, Cen A and NGC 1275 of type FRI seem to constitute a new class of VHE emitters. The radio galaxy PKS 0625-354 was observed and detected ($\sim$6$\sigma$) with the H.E.S.S. phase I telescopes in 2012, above an energy threshold of 250 GeV. The time-averaged VHE energy spectrum is well characterized by a power law model. The broad-band light curve, including the available multiwavelength data, as well as the VHE data gathered with H.E.S.S. will be presented.

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Michal Dyrda, Alicja Wierzcholska, Olivier Hervet, Rafal Moderski, Mateusz Janiak, Michał Ostrowski, Łukasz Stawarz. 2015-09-23. Discovery of VHE gamma-rays from the radio galaxy PKS 0625-354 with H.E.S.S. https://arxiv.org/abs/1509.06851

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