Browsing by Author "79c942f4-350e-46d9-8d65-91e8d8e4ff01"
Now showing items 1-12 of 12
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Attenuation of TeV γ-rays by the starlight photon field of the host galaxy
(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 ... -
Blazar variability -- expect the unexpected
(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, ... -
Characterising the long-term variability of blazars in leptonic models
(MDPI, 2019)Most research on blazar variability focuses on individual flares to explain acceleration and radiation mechanisms and improve on current models. These short-time events (being minutes, hours, or days) might not be ... -
The exceptional VHE gamma-ray outburst of PKS 1510-089 in May 2016
(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
(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
(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
(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 ... -
Implications of time-dependent injection in relativistic jets
(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 ... -
The long-lasting activity in the flat spectrum radio quasar (FSRQ) CTA 102
(MDPI, 2019)The flat spectrum radio quasar CTA 102 ( z=1.032 ) went through a tremendous phase of variability. Since early 2016 the gamma-ray flux level has been significantly higher than in previous years. It was topped by a four ... -
Monitoring of the FSRQ PKS 1510-089 with H.E.S.S.
(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
(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 ... -
The VHE γ-ray view of the FSRQ PKS 1510-089
(MDPI, 2019)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 ...
