116 citations · 184 across the 12 of their papers we have counts for
12 papers
The second H.E.S.S. gamma-ray burst catalogue: 15 years of observations with the H.E.S.S. telescopes
A. Acharyya, F. Aharonian, C. Arcaro +143
Recent observational efforts using imaging atmospheric Cherenkov telescopes (IACTs) have led to firm detections of very-high-energy (VHE) signals from bright gamma-ray bursts (GRBs…
Accretion onto Reissner-Nordström naked singularities
Tomasz Krajewski, Włodek Kluźniak
Nearly every galactic core contains a supermassive compact object, hypothesized to be a Kerr black hole. It was only with the advent of Event Horizon Telescope observations that th…
GRMHD Study of Accretion onto time-like Naked Singularities
Akhil Uniyal, Indu K. Dihingia, Yosuke Mizuno +1
Naked singularities (NkS) are solutions to the Einstein field equations that violate the cosmic censorship conjecture. Recent studies indicate that these objects may serve as compe…
Scattering of massive particles from black holes and naked singularities
Angelos Karakonstantakis, Włodek Kluźniak, Maciek Wielgus
We performed a numerical study of the dynamics of massive particles orbiting black holes and naked singularities in the Reissner-Nordström geometry. We modeled a stream of particle…
Combined dark matter search towards dwarf spheroidal galaxies with Fermi-LAT, HAWC, H.E.S.S., MAGIC, and VERITAS
LAT Collaboration, S. Abdollahi, L. Baldini +586
Dwarf spheroidal galaxies (dSphs) are excellent targets for indirect dark matter (DM) searches using gamma-ray telescopes because they are thought to have high DM content and a low…
Energy flow and radiation efficiency in radiative GRMHD simulations of neutron star ultraluminous X-ray sources
Fatemeh Kayanikhoo, Włodek Kluźniak, David Abarca +1
We investigate numerically the energy flow and radiation efficiency of accreting neutron stars as potential ultraluminous X-ray sources (ULXs). We perform ten simulations {in radia…
H.E.S.S. programme searching for VHE gamma rays associated with FRBs
F. Aharonian, A. Archaryya, J. Aschersleben +127
Fast Radio Bursts (FRBs) are highly energetic, extremely short-lived bursts of radio flashes. Despite extensive research, the exact cause of these outbursts remains speculative. Th…
Magnetic precession as a model for QPOs in PULXs: flat-top noise ULXs are different
Miljenko Čemeljić, Włodek Kluźniak, Sukalpa Kundu
Context. Several instances of low frequency Quasi-Periodic Oscillations (QPOs) have been reported in ultraluminous X-ray sources (ULXs), including three in pulsating ones (PULXs) t…
Launching of asymmetric outflows from the star-disk magnetosphere
Miljenko Čemeljić, Aleksandra Kotek, Włodek Kluźniak
In resistive and viscous magnetohydrodynamical simulations, we obtain axial outflows launched from the innermost magnetosphere of a star-disk system. The launched outflows are foun…
Misalignment of the Lense-Thirring precession by an accretion torque
D. A. Bollimpalli, J. Horák, W. Kluźniak +1
Orbiting matter misaligned with a spinning black hole undergoes Lense-Thirring precession, due to the frame-dragging effect. This phenomenon is particularly relevant for type-C QPO…
Discovery of hard-spectrum γ-ray emission from the BL Lac object 1ES 0414+009
The HESS Collaboration, A. Abramowski, F. Acero +199
1ES 0414+009 (z = 0.287) is a distant high-frequency-peaked BL Lac object, and has long been considered a likely emitter of very-high energy (VHE, E>100 GeV) gamma-rays due to its…
Discovery of extended VHE γ-ray emission from the vicinity of the young massive stellar cluster Westerlund 1
HESS Collaboration, A. Abramowski, F. Acero +198
Results obtained in very-high-energy (VHE; E > 100 GeV) γ-ray observations performed with the H.E.S.S. telescope array are used to investigate particle acceleration processes in th…