Browsing Conference Papers by Author "79c942f4-350e-46d9-8d65-91e8d8e4ff01"

Now showing items 1-7 of 7

    • Blazar variability -- expect the unexpected 

      Zacharias, Michael (Sissa Medialab, 2018)
      Despite significant progress in both data taking and the development of theory, blazars keep offering surprises. While many frequency bands are now covered by long-term monitoring efforts on at least a few selected sources, ...

    • The exceptional VHE gamma-ray outburst of PKS 1510-089 in May 2016 

      Zacharias, Michael; Sitarek, Julian; Prester, Dijana Dominis; Jankowsky, Felix; Lindfors, Elina (PoS, 2017)
      PKS 1510-089 (z=0.361) is one of only a handful of flat spectrum radio quasars that have been detected at very high energy (VHE, E > 100GeV) gamma rays. It is a very active source across the entire electromagnetic spectrum. ...

    • 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 ...

    • Implications of time-dependent injection in relativistic jets 

      Zacharias, Michael (AIP, 2017)
      Rapid blazar flaring events and their rich behavior require time-dependent modeling. One important approach is time-dependent injection causing non-linear cooling effects, since the inevitable SSC cooling depends on the ...

    • Monitoring of the FSRQ PKS 1510-089 with H.E.S.S. 

      Zacharias, Michael; Jankowsky, Felix; Mohamed, Mahmoud; Prokoph, Heike; Sanchez, David (PoS, 2017)
      The flat spectrum radio quasar (FSRQ) PKS 1510-089 (z=0.361) is known for its complex multiwavelength behavior. It has been monitored regularly at very high energy (VHE, E > 100GeV) gamma-rays with H.E.S.S. since its ...

    • Multi-wavelength observations of flaring blazars with ATOM and Fermi-LAT 

      Jankowsky, Felix; Böttcher, Markus; Zacharias, Michael; Wagner, Stefan J.; Kurtanidze, Omar (Sissa Medialab, 2017)
      The Automatic Telescope for Optical Monitoring is a 75cm optical telescope located at the H.E.S.S. site in Namibia. Since 2005, it monitors around 250 gamma-ray emitting AGN and has observed numerous blazar flares in several ...