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Showing 2022 · gr-qcShow all
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gr-qc2022
Multi-ring images of thin accretion disk of a regular naked compact object
Merce Guerrero, Gonzalo J. Olmo, Diego Rubiera-Garcia +1
We discuss the importance of multi-ring images in the optical appearance of a horizonless spherically symmetric compact object, when illuminated by an optically thin accretion disk…
gr-qc2022★ 5 cited
Eternal vs singular observers in interacting dark energy-dark matter models
Diego Álvarez-Ortega, Gonzalo J. Olmo, Diego Rubiera-García +1
Interacting dark energy-dark matter models have been widely analyzed in the literature in an attempt to find traces of new physics beyond the usual cosmological (CDM) models. Su…
gr-qc2022
Light ring images of double photon spheres in black hole and wormhole space-times
Merce Guerrero, Gonzalo J. Olmo, Diego Rubiera-Garcia +1
The silhouette of a black hole having a critical curve (an unstable bound photon orbit) when illuminated by an optically thin accretion disk whose emission is confined to the equat…