Browsing Faculty of Natural and Agricultural Sciences by Author "a33dbef4-65f2-4d0a-865f-e599fe62e772"

Now showing items 1-4 of 4

    • Attenuation of TeV γ-rays by the starlight photon field of the host galaxy 

      Zacharias, Michael; Chen, Xuhui; Wagner, Stefan J. (Oxford Univ Press, 2017)
      The absorption of TeV γ-ray photons produced in relativistic jets by surrounding soft photon fields is a long-standing problem of jet physics. In some cases, the most likely emission site close to the central black hole ...

    • The extended jet in AP Librae as the source of the VHE γ-ray emission 

      Zacharias, Michael; Wagner, Stefan J. (AIP, 2017)
      Most modeling attempts of blazars use a small emission zone located close to the central black hole in order to explain the broad-band spectral energy distribution. Here we present a case where additionally to the small ...

    • The FSRQ PKS 1510-089: the gamma-ray-synchrotron connection 

      Jankowsky, Felix; Zacharias, Michael; Wagner, Stefan J.; Kurtanidze, Omar (PoS, 2017)
      The flat spectrum radio quasar (FSRQ) PKS 1510-089 (z=0.361) is known for its complex multiwavelength behaviour. Since 2015, it has been very active across the entire electromagnetic spectrum. This has lead to joint ...

    • H.E.S.S. monitoring of PKS 2155-304 in 2015 and 2016 

      Wierzcholska, Alicja; Zacharias, Michael; Jankowsky, Felix; Wagner, Stefan (MDPI, 2019)
      PKS 2155-304 is one of the brightest blazar located in Southern Hemisphere, monitored with H.E.S.S. since the first light of the experiment. Here we report multiwavelength monitoring observations collected during the ...