289 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of AveiroPT34 papers
- University of LisbonPT12 papers
- Instituto Superior TécnicoPT11 papers
- Centro de Astrofísica e GravitaçãoPT9 papers
- Max Planck Institute for Gravitational PhysicsDE4 papers
- Carl von Ossietzky Universität OldenburgDE3 papers
- Universidade do PortoPT3 papers
- Universitat de ValènciaES3 papers
- University of MonsBE3 papers
- University of TübingenDE3 papers
- Dublin Institute For Advanced StudiesIE2 papers
- Fudan UniversityCN2 papers
35 papers
Warm Inflation, Neutrinos and Dark matter: a minimal extension of the Standard Model
Miguel Levy, João G. Rosa, Luis B. Ventura
We show that warm inflation can be realized within a minimal extension of the Standard Model with three right-handed neutrinos, three complex scalars and a gauged lepton/B-L U(1) s…
Cartan connections for stochastic developments on sub-Riemannian manifolds
Ivan Beschastnyi, Karen Habermann, Alexandr Medvedev
Analogous to the characterisation of Brownian motion on a Riemannian manifold as the development of Brownian motion on a Euclidean space, we construct sub-Riemannian diffusions on…
Shadows of charged rotating black holes: Kerr-Newman versus Kerr-Sen
Sérgio Vinicius M. C. B. Xavier, Pedro V. P. Cunha, Luís C. B. Crispino +1
Celebrating the centennial of its first experimental test, the theory of General Relativity (GR) has successfully and consistently passed all subsequent tests with flying colours.…
gauged Skyrmions in dimensions
Francisco Navarro-Lerida, Eugen Radu, D. H. Tchrakian
We study the simplest gauged Skyrme models in (flat) dimensions. In the gauge decoupled limit, the model supports topologically stable solitons (Skyrmions) and…
Spinning black holes in shift-symmetric Horndeski theory
Jorge F. M. Delgado, Carlos A. R. Herdeiro, Eugen Radu
We construct spinning black holes (BHs) in shift-symmetric Horndeski theory. This is an Einstein-scalar-Gauss-Bonnet model wherein the (real) scalar field couples linearly to the G…
Einstein-Maxwell-scalar black holes: the hot, the cold and the bald
Jose Luis Blázquez-Salcedo, Carlos A. R. Herdeiro, Jutta Kunz +2
The phenomenon of spontaneous scalarisation of charged black holes (BHs) has recently motivated studies of various Einstein-Maxwell-scalar models. Within these models, different cl…
Lensing and shadow of a black hole surrounded by a heavy accretion disk
Pedro V. P. Cunha, Nelson A. Eiró, Carlos A. R. Herdeiro +1
We consider a static, axially symmetric spacetime describing the superposition of a Schwarzschild black hole (BH) with a thin and heavy accretion disk. The BH-disk configuration is…
Dynamically and thermodynamically stable black holes in Einstein-Maxwell-dilaton gravity
Dumitru Astefanesei, Jose Luis Blázquez-Salcedo, Carlos Herdeiro +2
We consider Einstein-Maxwell-dilaton gravity with the non-minimal exponential coupling between the dilaton and the Maxwell field emerging from low energy heterotic string theory. T…
EHT constraint on the ultralight scalar hair of the M87 supermassive black hole
Pedro V. P. Cunha, Carlos A. R. Herdeiro, Eugen Radu
Hypothetical ultralight bosonic fields will spontaneously form macroscopic bosonic halos around Kerr black holes, via superradiance, transferring part of the mass and angular momen…
Non-linear dynamics of spinning bosonic stars: formation and stability
N. Sanchis-Gual, F. Di Giovanni, M. Zilhão +4
We perform numerical evolutions of the fully non-linear Einstein-(complex, massive)Klein-Gordon and Einstein-(complex)Proca systems, to assess the formation and stability of spinni…
Boson and Dirac stars in dimensions
Jose Luis Blázquez-Salcedo, Christian Knoll, Eugen Radu
We present a comparative study of spherically symmetric, localized, particle-like solutions for spin and gravitating fields in a -dimensional, asymptotically flat…
Multiscale Information Storage of Linear Long-Range Correlated Stochastic Processes
Luca Faes, Margarida Almeida Pereira, Maria Eduarda Silva +4
Information storage, reflecting the capability of a dynamical system to keep predictable information during its evolution over time, is a key element of intrinsic distributed compu…
Synchronized stationary clouds in a static fluid
Carolina L. Benone, Luís C. B. Crispino, Carlos A. R. Herdeiro +1
The existence of stationary bound states for the hydrodynamic velocity field between two concentric cylinders is established. We argue that rotational motion, together with a trapp…
Non-perturbative spinning black holes in dynamical Chern-Simons gravity
Terence Delsate, Carlos Herdeiro, Eugen Radu
Spinning black holes in dynamical Einstein-Chern-Simons gravity are constructed by directly solving the field equations, without resorting to any perturbative expansion. This model…
Head-on collisions and orbital mergers of Proca stars
Nicolas Sanchis-Gual, Carlos Herdeiro, José A. Font +2
Proca stars are self-gravitating Bose-Einstein condensates obtained as numerical stationary solutions of the Einstein-(complex)-Proca system. These solitonic can be both stable and…
Shadows of Exact Binary Black Holes
Pedro V. P. Cunha, Carlos A. R. Herdeiro, Maria J. Rodriguez
Black hole (BH) shadows in dynamical binary BHs (BBHs) have been produced via ray-tracing techniques on top of expensive fully non-linear numerical relativity simulations. We show…
Horizon geometry for Kerr black holes with synchronised hair
Jorge F. M. Delgado, Carlos A. R. Herdeiro, Eugen Radu
We study the horizon geometry of Kerr black holes (BHs) with scalar synchronised hair, a family of solutions of the Einstein-Klein-Gordon system that continuously connects to vacuu…
An analytic effective model for hairy black holes
Yves Brihaye, Thomas Delplace, Carlos Herdeiro +1
Hairy black holes (BHs) have macroscopic degrees of freedom which are not associated with a Gauss law. As such, these degrees of freedom are not manifest as quasi-local quantities…
Does the black hole shadow probe the event horizon geometry?
Pedro V. P. Cunha, Carlos A. R. Herdeiro, Maria J. Rodriguez
There is an exciting prospect of obtaining the shadow of astrophysical black holes (BHs) in the near future with the Event Horizon Telescope. As a matter of principle, this justifi…
Superradiant instabilities in the Kerr-mirror and Kerr-AdS black holes with Robin boundary conditions
Hugo R. C. Ferreira, Carlos A. R. Herdeiro
It has been recently observed that a scalar field with Robin boundary conditions (RBCs) can trigger both a superradiant and a bulk instability for a BTZ black hole (BH). To underst…
Scalar field dark matter with spontaneous symmetry breaking and the keV line
Catarina Cosme, João G. Rosa, O. Bertolami
We show that the present dark matter abundance can be accounted for by an oscillating scalar field that acquires both mass and a non-zero expectation value from interactions with t…
Iron K line of Kerr black holes with Proca hair
Menglei Zhou, Cosimo Bambi, Carlos A. R. Herdeiro +1
We continue our study on the capabilities of present and future X-ray missions to test the nature of astrophysical black hole candidates via X-ray reflection spectroscopy and disti…
Numerical evolutions of spherical Proca stars
Nicolas Sanchis-Gual, Carlos Herdeiro, Eugen Radu +2
Vector boson stars, or , have been recently obtained as fully non-linear numerical solutions of the Einstein-(complex)-Proca system. These are self-gravitatin…
Iron K line of Proca stars
Tianling Shen, Menglei Zhou, Cosimo Bambi +2
X-ray reflection spectroscopy can be a powerful tool to test the nature of astrophysical black holes. Extending previous work on Kerr black holes with scalar hair [1] and on boson…