572 citations · 3.9k across the 34 of their papers we have counts for
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Good tachyons, bad bradyons: role reversal in Einstein-nonlinear-electrodynamics models
Marco A. A. de Paula, Haroldo C. D. Lima Junior, Pedro V. P. Cunha +2
In relativistic mechanics, the 4-velocity and the 4-momentum need not be parallel. This allows their norm to have a different sign. This possibility occurs in nonlinear electrodyna…
Breaking the north-south symmetry: dyonic spinning black holes with synchronized gauged scalar hair
Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu +1
We study stationary clouds of a gauged, complex scalar field on a magnetically (and possibly electrically as well) charged Kerr-Newman black hole (BH). The existence of a magnetic…
Hypershadows of higher dimensional black objects: a case study of cohomogeneity-one d=5 Myers-Perry
João P. A. Novo, Pedro V. P. Cunha, Carlos A. R. Herdeiro
What does a black hole look like? In 1+3 spacetime dimensions, the optical appearance of a black hole is a bidimensional region in the observer's sky often called the black hole sh…
Analytical proxy to families of numerical solutions: the case study of spherical mini-boson stars
Jianzhi Yang, Pedro V. P. Cunha, Carlos A. R. Herdeiro
The Einstein field equations, or generalizations thereof, are difficult to solve analytically. On the other hand, numerical solutions of the same equations have become increasingly…
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…
Light rings on stationary axisymmetric spacetimes: blind to the topology and able to coexist
Pedro V. P. Cunha, Carlos A. R. Herdeiro, João P. A. Novo
It has been established that Black Hole (BH) spacetimes obeying some general set of assumptions always possess, at least, one light ring (per rotation sense) [arXiv:2003.06445]. Th…