227 citations · 424 across the 6 of their papers we have counts for
6 papers
The imitation game reloaded: effective shadows of dynamically robust spinning Proca stars
Ivo Sengo, Pedro V. P. Cunha, Carlos A. R. Herdeiro +1
We analyse the lensing images by dynamically robust rotating (mini-)Proca stars surrounded by thin accretion disks. Due to their peculiar geodesic structure we show that these imag…
Electrically charged regular black holes in nonlinear electrodynamics: light rings, shadows and gravitational lensing
Marco A. A. de Paula, Haroldo C. D. Lima Junior, Pedro V. P. Cunha +1
Within nonlinear electrodynamics (NED), photons follow null geodesics of an effective geometry, which is different from the geometry of the spacetime itself. Over the last years, s…
Null and timelike circular orbits from equivalent 2D metrics
Pedro V. P. Cunha, Carlos A. R. Herdeiro, João P. A. Novo
The motion of particles on spherical dimensional spacetimes can, under some assumptions, be described by the curves on a 2-dimensional manifold, the optical and Jacobi mani…
Einstein-Maxwell-dilaton neutral black holes in strong magnetic fields: topological charge, shadows and lensing
Haroldo C. D. Lima Junior, Jian-Zhi Yang, Luís C. B. Crispino +2
The light rings (LRs) topological charge (TC) of a spacetime measures the number of stable LRs minus the number of unstable LRs. It is invariant under smooth spacetime deformations…
Shadows of Einstein-dilaton-Gauss-Bonnet black holes
Pedro V. P. Cunha, Carlos A. R. Herdeiro, Burkhard Kleihaus +2
We study the shadows of the fully non-linear, asymptotically flat Einstein-dilaton-Gauss-Bonnet (EdGB) black holes (BHs), for both static and rotating solutions. We find that, in a…
Chaotic lensing around boson stars and Kerr black holes with scalar hair
P. V. P. Cunha, J. Grover, C. Herdeiro +3
In a recent letter, arXiv:1509.00021, it was shown that the lensing of light around rotating boson stars and Kerr black holes with scalar hair can exhibit chaotic patterns. Since n…