The optical appearance of some regular compact objects

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On-site: Sala Sousa Pinto
Mercè Guerrero (CIDMA, University of Aveiro)
The significance of multi-ring images in the optical appearance of spherically symmetric compact objects is discussed. Such images are produced by an optically and geometrically thin accretion disk illuminating the object. We display the consequences of a different structure compared to the usual GR black holes on their optical appearance and if it is possible to distinguish these new objects.