3 papers
astro-ph.HE2026
From reflection to scattering: Polarimetric signatures of funnel-type outflows. Modeling obscured ultraluminous X-ray sources
Varpu Ahlberg, Alexandra Veledina, Eugene Churazov +1
Super-Eddington accretion onto compact objects is expected to produce optically thick outflows with a funnel-shaped cavity that may collimate the emission. At inclinations higher t…
astro-ph.HE2025
Super-Eddington Accretion Geometry: a Remarkable Stability of the Hidden Ultraluminous X-Ray Source Cygnus X-3
Romana Mikušincová, Alexandra Veledina, Fabio Muleri +112
We report on the average and orbital phase-resolved polarization of Cyg X-3 in the hard state during the 2023 Imaging X-ray Polarimetry Explorer (IXPE) observational campaign. We f…
astro-ph.HE2025
The constraining power of X-ray polarimetry: detailed structure of the intrabinary bow shock in Cygnus X-3
Varpu Ahlberg, Anastasiia Bocharova, Alexandra Veledina
Cygnus X-3 is the only known Galactic high-mass X-ray binary with a Wolf-Rayet companion. Recent X-ray polarimetry results with the Imaging X-ray Polarimetry Explorer have revealed…