Search Results - "Cunha, Pedro V P"

Spontaneously Scalarized Kerr Black Holes in Extended Scalar-Tensor-Gauss-Bonnet Gravity by Cunha, Pedro V P, Herdeiro, Carlos A R, Radu, Eugen

“…We construct asymptotically flat, spinning, regular on and outside an event horizon, scalarized black holes (SBHs) in extended scalar-tensor-Gauss-Bonnet…”
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Light-Ring Stability for Ultracompact Objects by Cunha, Pedro V P, Berti, Emanuele, Herdeiro, Carlos A R

“…We prove the following theorem: axisymmetric, stationary solutions of the Einstein field equations formed from classical gravitational collapse of matter…”
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Spinning black holes with a separable Hamilton–Jacobi equation from a modified Newman–Janis algorithm by Junior, Haroldo C. D. Lima, Crispino, Luís C. B., Cunha, Pedro V. P., Herdeiro, Carlos A. R.

“…Obtaining solutions of the Einstein field equations describing spinning compact bodies is typically challenging. The Newman–Janis algorithm provides a…”
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Stationary Black Holes and Light Rings by Cunha, Pedro V P, Herdeiro, Carlos A R

“…The ringdown and shadow of the astrophysically significant Kerr black hole (BH) are both intimately connected to a special set of bound null orbits known as…”
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Exotic Compact Objects and the Fate of the Light-Ring Instability by Cunha, Pedro V P, Herdeiro, Carlos, Radu, Eugen, Sanchis-Gual, Nicolas

“…Ultracompact objects with light rings (LRs) but without an event horizon could mimic black holes (BHs) in their strong gravity phenomenology. But are such…”
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Shadows of Kerr Black Holes with Scalar Hair by Cunha, Pedro V P, Herdeiro, Carlos A R, Radu, Eugen, Rúnarsson, Helgi F

“…Using backwards ray tracing, we study the shadows of Kerr black holes with scalar hair (KBHSH). KBHSH interpolate continuously between Kerr BHs and boson stars…”
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Shadows and strong gravitational lensing: a brief review by Cunha, Pedro V. P., Herdeiro, Carlos A. R.

“…For ultra compact objects, light rings and fundamental photon orbits (FPOs) play a pivotal role in the theoretical analysis of strong gravitational lensing…”
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EHT Constraint on the Ultralight Scalar Hair of the M87 Supermassive Black Hole by Cunha, Pedro, Herdeiro, Carlos, Radu, Eugen

“…Hypothetical ultralight bosonic fields will spontaneously form macroscopic bosonic halos around Kerr black holes, via superradiance, transferring part of the…”
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Sombras de buracos negros: desvendando a física por detrás da imagem de M87 by Lima Junior, Haroldo C. D., da Cunha, Pedro V. P., Herdeiro, Carlos A. R., Crispino, Luís C. B.

“…Neste artigo analisamos as sombras de buracos negros girantes de Kerr e a sua ligação com a primeira imagem de um buraco negro obtida pela colaboração…”
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Exotic Compact Objects and the Fate of the Light-Ring Instability by Cunha, Pedro V. P, Herdeiro, Carlos, Radu, Eugen, Sanchis-Gual, Nicolas

“…Phys. Rev. Lett. 130 (2023) 061401 Ultracompact objects with light-rings (LRs) but without an event horizon could mimic black holes (BHs) in their strong…”
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Kerr black holes with synchronised Proca hair: lensing, shadows and EHT constraints by Sengo, Ivo, Cunha, Pedro V. P, Herdeiro, Carlos A. R, Radu, Eugen

“…We investigate the gravitational lensing by spinning Proca stars and the shadows and lensing by Kerr black holes (BHs) with synchronised Proca hair, discussing…”
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Stationary black holes and light rings by Cunha, Pedro V. P, Herdeiro, Carlos A. R

“…Phys. Rev. Lett. 124, 181101 (2020) The ringdown and shadow of the astrophysically significant Kerr Black Hole (BH) are both intimately connected to a special…”
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Shadows of Einstein–dilaton–Gauss–Bonnet black holes by Cunha, Pedro V.P., Herdeiro, Carlos A.R., Kleihaus, Burkhard, Kunz, Jutta, Radu, Eugen

“…We study the shadows of the fully non-linear, asymptotically flat Einstein–dilaton–Gauss–Bonnet (EdGB) black holes (BHs), for both static and rotating…”
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The imitation game: Proca stars that can mimic the Schwarzschild shadow by Herdeiro, Carlos A. R, Pombo, Alexandre M, Radu, Eugen, Cunha, Pedro V. P, Sanchis-Gual, Nicolas

“…Can a dynamically robust bosonic star (BS) produce an (effective) shadow that mimics that of a black hole (BH)? The BH shadow is linked to the existence of…”
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EHT constraint on the ultralight scalar hair of the M87 supermassive black hole by Cunha, Pedro V. P, Herdeiro, Carlos A. R, Radu, Eugen

“…Universe 2019, 5(12), 220 Hypothetical ultralight bosonic fields will spontaneously form macroscopic bosonic halos around Kerr black holes, via superradiance,…”
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Shadows and strong gravitational lensing: a brief review by Cunha, Pedro V. P, Herdeiro, Carlos A. R

“…Gen.Rel.Grav. 50 (2018) no.4, 42 For ultra compact objects (UCOs), Light Rings (LRs) and Fundamental Photon Orbits (FPOs) play a pivotal role in the…”
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Shadows and lensing of black holes immersed in strong magnetic fields by Junior, Haroldo C. D. Lima, Cunha, Pedro V. P, Herdeiro, Carlos A. R, Crispino, Luís C. B

“…Phys. Rev. D 104, 044018 (2021) We investigate the null geodesic flow and in particular the light rings (LRs), fundamental photon orbits (FPOs) and shadows of…”
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Can different black holes cast the same shadow? by Junior, Haroldo C. D. Lima, Crispino, Luís C. B, Cunha, Pedro V. P, Herdeiro, Carlos A. R

“…Phys. Rev. D 103, 084040 (2021) We consider the following question: may two different black holes (BHs) cast exactly the same shadow? In spherical symmetry, we…”
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Spontaneously scalarised Kerr black holes by Cunha, Pedro V. P, Herdeiro, Carlos A. R, Radu, Eugen

“…Phys. Rev. Lett. 123, 011101 (2019) We construct asymptotically flat, spinning, regular on and outside an event horizon, scalarised black holes (SBHs) in…”
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Shadows of charged rotating black holes: Kerr-Newman versus Kerr-Sen by Xavier, Sérgio Vinicius M. C. B, Cunha, Pedro V. P, Crispino, Luís C. B, Herdeiro, Carlos A. R

“…Int. J Modern Phys. D 29, 2041005 (2020) Celebrating the centennial of its first experimental test, the theory of General Relativity (GR) has successfully and…”
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