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astro-ph.HE2026
Resonant Inverse Compton Scattering and Hard X-ray Emission in Magnetar Magnetospheres
Kun Hu, Nicholas Rackers, Alexander Y. Chen
Magnetars are a subclass of neutron stars with ultra-strong surface magnetic fields. Some magnetars exhibit persistent hard X-ray emission, characterized by power-law tails with ph…
astro-ph.HE2026
Collisionless Accretion of Finite-Angular-Momentum Plasma onto a Spinning Black Hole
John M. Mehlhaff, Alexander Y. Chen, Martin Luepker +1
In low-luminosity active galactic nuclei like M87* and Sgr A*, the accretion disk around the central supermassive black hole is tenuous and collisionless. As a result, the usual id…