A fully analytic accretion model combining a thick disk, Gaussian ring bumps, and localized Gaussian spots is applied to Kerr ray tracing, generating images with multiple bright spots and arcs.
Observational Signature and Additional Photon Rings of Asymmetric Thin-shell Wormhole
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abstract
Recently, a distinct shadow mechanism was proposed by Wang et al. from the asymmetric thin-shell wormhole (ATW) in [Phys. Lett. B 811 (2020) 135930]. On the other hand, Gralla et al's work [Phys. Rev. D 100 (2019) 2, 024018] represented a nice description of photon rings in the presence of an accretion disk around a black hole. In this paper, we are inspired to thoroughly investigate the observational appearance of an accretion disk around the ATW. Although the spacetime outside an ATW with a throat could be identical to that containing a black hole with its event horizon, we show evident additional photon rings from the ATW spacetime. Moreover, a potential lensing band between two highly demagnified photon rings is found. Our analysis provides an optically observational signature to distinguish ATWs from black holes.
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Construction of an analytic multi-component accretion environment and its application to Kerr black hole imaging
A fully analytic accretion model combining a thick disk, Gaussian ring bumps, and localized Gaussian spots is applied to Kerr ray tracing, generating images with multiple bright spots and arcs.