274 citations · 2k across the 41 of their papers we have counts for
42 papers
Compton-induced HE -- VHE -rays from pair cascade emissions in the SEDs of radio galaxies: NGC 1275
Mfuphi Ntshatsha, Markus Böttcher, Soebur Razzaque
In the scheme of active galactic nuclei (AGNi), the blazar subclass is particularly bright in -rays. This is because of their emissions being beamed into our line of sight, as o…
Evidence for a spectral steepening of the gamma-ray emission from the Galactic Center ridge
A. Acharyya, F. Aharonian, H. Ashkar +130
Very-high-energy (VHE) -ray emission detected from the central molecular zone (CMZ) hints at diffusive propagation of cosmic rays (CRs) injected continuously near the Galactic c…
Correlation between emission-line luminosity and gamma-ray dominance in the blazar 3C 279
Anton Dmytriiev, Markus Boettcher, Thabiso O. Machipi
Despite numerous studies, the origin of the gamma-ray emission from blazars is still debated, in particular whether it is produced by leptonic or hadronic processes. In this study,…
H.E.S.S. follow-up observations of Binary Black Hole Coalescence events during the second and third Gravitational Waves observing runs of Advanced LIGO and Advanced Virgo
H. E. S. S. collaboration, :, H. Abdalla +151
We report on the observations of four well-localized binary black hole (BBH) mergers by the High Energy Stereoscopic System (H.E.S.S.) during the second and third observing runs of…
Simulations of Stochastic Long-Term Variability in Leptonic Models for External-Compton and Synchrotron Self-Compton Dominated Blazars
Hannes Thiersen, Michael Zacharias, Markus Böttcher
In this work we investigate the nature of multi-wavelength variability of blazars from a purely numerical approach. We use a time-dependent one-zone leptonic blazar emission model…
Searching for TeV gamma-ray emission from SGR\,1935+2154 during its 2020 X-ray and radio bursting phase
H. E. S. S. Collaboration, :, H. Abdalla +251
Magnetar hyperflares are the most plausible explanation for fast radio bursts (FRB) -- enigmatic powerful radio pulses with durations of several milliseconds and high brightness te…