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The peculiar new state of the blazar PKS 1510-089
H. M. Schutte, M. Zacharias, M. Böttcher +4
Contemporaneous multiwavelength observations with H.E.S.S., SALT, Fermi-LAT, Swift, and ATOM show that the blazar PKS 1510-089 suffered a significant decrease in its optical flux,…
The vanishing of the primary emission region in PKS 1510-089
F. Aharonian, F. Ait Benkhali, J. Aschersleben +152
In July 2021, PKS 1510-089 exhibited a significant flux drop in the high-energy gamma-ray (by a factor 10) and optical (by a factor 5) bands and remained in this low state througho…
Constraining the cosmic-ray pressure in the inner Virgo Cluster using H.E.S.S. observations of M 87
H. E. S. S. Collaboration, :, F. Aharonian +160
The origin of the gamma-ray emission from M87 is currently a matter of debate. This work aims to localize the VHE (100 GeV-100 TeV) gamma-ray emission from M87 and probe a potentia…
Redshift determination of blazars for the Cherenkov Telescope Array
Eli Kasai, Paolo Goldoni, Santiago Pita +5
Blazars are the most numerous type of observed high-energy gamma-ray emitters. However, their emission mechanisms and population properties are still not well-understood. Crucial t…