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Radiative GRMHD simulations of accretion disks
Włodek Kluźniak, David Abarca, Bhupendra Mishra
We describe some recent results on the evolution of accretion disks around black holes and neutron stars obtained in magnetohydrodynamic (MHD) simulations in general relativity (GR…
Radiative GRMHD simulations of accretion and outflow in non-magnetized neutron stars and ultraluminous X-ray sources
David Abarca, Włodek Kluźniak, Aleksander Sądowski
We run two GRRMHD simulations of super-Eddington accretion disks around a black hole and a non-magnetized, non-rotating neutron star. The neutron star was modeled using a reflectiv…
TeV gamma-ray observations of the binary neutron star merger GW170817 with H.E.S.S
H. E. S. S. Collaboration, :, H. Abdalla +250
We search for high-energy gamma-ray emission from the binary neutron star merger GW170817 with the H.E.S.S. Imaging Air Cherenkov Telescopes. The observations presented here have b…
The population of TeV pulsar wind nebulae in the H.E.S.S. Galactic Plane Survey
H. E. S. S. Collaboration, :, H. Abdalla +255
The nine-year H.E.S.S. Galactic Plane Survey (HGPS) yielded the most uniform observation scan of the inner Milky Way in the TeV gamma-ray band to date. The sky maps and source cata…
Radial modes of levitating atmospheres around Eddington-luminosity neutron stars
Deepika Ananda Bollimpalli, Włodek Kluźniak
We consider an optically thin radiation-supported levitating atmosphere suspended well above the stellar surface, as discussed recently in the Schwarzschild metric for a star of lu…
Curvature dependence of relativistic epicyclic frequencies in static, axially symmetric spacetimes
Ronaldo S. S. Vieira, Włodek Kluźniak, Marek Abramowicz
The sum of squared epicyclic frequencies of nearly circular motion () in axially symmetric configurations of Newtonian gravity is known to depend both on the matter de…