2 papers
gr-qc2026
Thin accretion-disc transfer functions in the q-metric spacetime: quadrupolar lensing signatures
Saken Toktarbay, Manas Khassanov, Aray Muratkhan +3
We study geometrically thin equatorial disc images in the static, axisymmetric q-metric spacetime using backward ray tracing. The Schwarzschild solution is recovered at ; for…
gr-qc2026
Shadow, Emission, and Strong-Field Lensing of Dilatonic Black Holes
Kuantay Boshkayev, Ainur Urazalina, Aidana Kurmanbek +2
We study the shadow and strong-field optical properties of a static, spherically symmetric dyon-like dilatonic black hole. The photon sphere radius, critical impact parameter, and…