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15 papers · 2 filters
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…
Dissipation of the striped pulsar wind
Benoît Cerutti, Alexander A. Philippov
Rapidly rotating neutron stars blow a relativistic, magnetized wind mainly composed of electron-positron pairs. The free expansion of the wind terminates far from the neutron star…
NuSTAR spectral analysis of two bright Seyfert 1 galaxies: MCG +8-11-11 and NGC 6814
A. Tortosa, S. Bianchi, A. Marinucci +10
We report on the NuSTAR observations of two bright Seyfert 1 galaxies, namely MCG +8-11-11 (100 ks) and NGC 6814 (150 ks). The main goal of these observations was to investigate th…
Multi-wavelength campaign on NGC7469 II. Column densities and variability in the X-ray spectrum
U. Peretz, E. Behar, G. A. Kriss +16
We investigate the ionic column density variability of the ionized outflows associated with NGC7469, to estimate their location and power. This could allow a better understan…
Instability in strongly magnetized accretion discs: A global perspective
Upasana Das, Mitchell C. Begelman, Geoffroy Lesur
We examine the properties of strongly magnetized accretion discs in a global framework, with particular focus on the evolution of magnetohydrodynamic instabilities such as the magn…
Photoionization instability of the Fe K absorbing plasma in the neutron star transient AX J1745.6-2901
Stefano Bianchi, Gabriele Ponti, Teo Muñoz-Darias +1
AX J1745.6-2901 is a Low Mass X-ray Binary with an accreting neutron star, showing clear evidence for highly ionized absorption. Strong ionized Fe K and K absorption lines ar…