Shadow Images of Rotating Einstein–Gauss–Bonnet Black Holes Illuminated by a Thick Accretion Disk

Puntos clave

• The aim is to investigate how a thick accretion disk influences the shadow images of rotating Einstein–Gauss–Bonnet black holes.
• Examined shadow images under thick accretion disk conditions.
• Considered two radiation models: isotropic and anisotropic.
• Analyzed effects of observer inclination and Gauss-Bonnet coupling.
• High-order images show bright rings and dark regions corresponding to the event horizon.
• Increased observer inclination splits the dark region into two for isotropic radiation.
• Gauss-Bonnet coupling affects high-order image sizes, while increasing rotation alters their shape.