18.1k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- University of LisbonPT1.3k papers
- Universidade Técnica de LisboaPT388 papers
- Centre National de la Recherche ScientifiqueFR326 papers
- Instituto de Plasmas e Fusão NuclearPT209 papers
- European Organization for Nuclear ResearchCH202 papers
- Centro de Física Teórica de Partículas201 papers
- Instituto Politécnico de LisboaPT190 papers
- Instituto de TelecomunicaçõesPT175 papers
- Universitat de ValènciaES175 papers
- Institut National de Physique Nucléaire et de Physique des ParticulesFR143 papers
- Centro de Astrofísica e GravitaçãoPT133 papers
- LIP - Laboratory of Instrumentation and Experimental Particle PhysicsPT133 papers
39 papers · 2 filters
Dynamical system analysis for nonminimal torsion-matter coupled gravity
Sante Carloni, Francisco S. N. Lobo, Giovanni Otalora +1
In this work, we perform a detailed dynamical analysis for the cosmological applications of a nonminimal torsion-matter coupled gravity. Two alternative formalisms are proposed, wh…
Analytic self-force calculations in the post-Newtonian regime: eccentric orbits on a Schwarzschild background
Seth Hopper, Chris Kavanagh, Adrian C. Ottewill
We present a method for solving the first-order field equations in a post-Newtonian (PN) expansion. Our calculations generalize work of Bini and Damour and subsequently Kavanagh et…
Vacuum decay in an interacting multiverse
S. Robles-Pérez, A. Alonso-Serrano, C. Bastos +1
We examine a new multiverse scenario in which the component universes interact. We focus our attention to the process of "true" vacuum nucleation in the false vacuum within one sin…
Linear stability of nonbidiagonal black holes in massive gravity
Eugeny Babichev, Richard Brito, Paolo Pani
We consider generic linear perturbations of a nonbidiagonal class of static black-hole solutions in massive (bi)gravity. We show that the quasinormal spectrum of these solutions co…
Eccentric-orbit EMRI gravitational wave energy fluxes to 7PN order
Erik Forseth, Charles R. Evans, Seth Hopper
We present new results through 7PN order on the energy flux from eccentric extreme-mass-ratio binaries. The black hole perturbation calculations are made at very high accuracy (200…
Gravity-dominated unequal-mass black hole collisions
Ulrich Sperhake, Emanuele Berti, Vitor Cardoso +1
We continue our series of studies of high-energy collisions of black holes investigating unequal-mass, boosted head-on collisions in four dimensions. We show that the fraction of t…
Brane solutions sourced by a scalar with vanishing potential and classification of scalar branes
M. Cadoni, E. Franzin, M. Serra
We derive exact brane solutions of minimally coupled Einstein-Maxwell-scalar gravity in d+2 dimensions with a vanishing scalar potential. The solutions are conformal to the Lifshit…
Near-horizon description of extremal magnetised stationary black holes and Meissner effect
Jiří Bičák, Filip Hejda
After a brief summary of the basic properties of stationary spacetimes representing rotating, charged black holes in strong axisymmetric magnetic fields, we concentrate on extremal…
Cosmic Censorship and parametrized spinning black-hole geometries
Vitor Cardoso, Leonel Queimada
The ``cosmic censorship conjecture'' asserts that all singularities arising from gravitational collapse are hidden within black holes. We investigate this conjecture in a setup of…
Science with the space-based interferometer eLISA. I: Supermassive black hole binaries
Antoine Klein, Enrico Barausse, Alberto Sesana +8
We compare the science capabilities of different eLISA mission designs, including four-link (two-arm) and six-link (three-arm) configurations with different arm lengths, low-freque…
Infinite efficiency of collisional Penrose process: Can over-spinning Kerr geometry be the source of ultra-high-energy cosmic rays and neutrinos ?
Mandar Patil, Tomohiro Harada, Ken-ichi Nakao +2
The origin of the ultra-high-energy particles we receive on the Earth from the outer space such as EeV cosmic rays and PeV neutrinos remains an enigma. All mechanisms known to us c…
Gravitational-wave cutoff frequencies of tidally disruptive neutron star-black hole binary mergers
Francesco Pannarale, Emanuele Berti, Koutarou Kyutoku +2
Tidal disruption has a dramatic impact on the outcome of neutron star-black hole mergers. The phenomenology of these systems can be divided in three classes: nondisruptive, mildly…
Accretion of dark matter by stars
Richard Brito, Vitor Cardoso, Hirotada Okawa
Searches for dark matter imprints are one of the most active areas of current research. We focus here on light fields with mass , such as axions and axion-like candidates. Usi…
Tidal Love numbers of a slowly spinning neutron star
Paolo Pani, Leonardo Gualtieri, Valeria Ferrari
By extending our recent framework to describe the tidal deformations of a spinning compact object, we compute for the first time the tidal Love numbers of a spinning neutron star t…
Aligned spin neutron star-black hole mergers: a gravitational waveform amplitude model
Francesco Pannarale, Emanuele Berti, Koutarou Kyutoku +2
The gravitational radiation emitted during the merger of a black hole with a neutron star is rather similar to the radiation from the merger of two black holes when the neutron sta…
Proca Stars: gravitating Bose-Einstein condensates of massive spin 1 particles
Richard Brito, Vitor Cardoso, Carlos A. R. Herdeiro +1
We establish that massive complex Abelian vector fields (mass ) can form gravitating solitons, when minimally coupled to Einstein's gravity. Such Proca stars (PSs) have a statio…
Slowly rotating black hole solutions in Horndeski gravity
Andrea Maselli, Hector O. Silva, Masato Minamitsuji +1
We study black hole solutions at first order in the Hartle-Thorne slow-rotation approximation in Horndeski gravity theories. We derive the equations of motion including also cases…
A dynamical system analysis of hybrid metric-Palatini cosmologies
Sante Carloni, Tomi Koivisto, Francisco S. N. Lobo
The so called hybrid metric-Palatini gravity presents a unique viable generalisation of the theories within the metric-affine formalism. Here the cosmology of the $f(…
Distinguishing black-hole spin-orbit resonances by their gravitational wave signatures. II: Full parameter estimation
Daniele Trifirò, Richard O'Shaughnessy, Davide Gerosa +4
Gravitational waves from coalescing binary black holes encode the evolution of their spins prior to merger. In the post-Newtonian regime and on the precession timescale, this evolu…
Geodesic motion in equal angular momenta Myers-Perry-AdS spacetimes
Térence Delsate, Jorge V. Rocha, Raphael Santarelli
We study the geodesic motion of massive and massless test particles in the background of equally spinning Myers-Perry-anti-de Sitter (AdS) black holes in five dimensions. By adopti…
Rotating black holes in Einstein-Dilaton-Gauss-Bonnet gravity with finite coupling
Andrea Maselli, Paolo Pani, Leonardo Gualtieri +1
Among various strong-curvature extensions to General Relativity, Einstein-Dilaton-Gauss-Bonnet gravity stands out as the only nontrivial theory containing quadratic curvature corre…
Slowly rotating thin shell gravastars
Nami Uchikata, Shijun Yoshida
We construct the solutions of slowly rotating gravastars with a thin shell. In the zero-rotation limit, we consider the gravastar composed of a de Sitter core, a thin shell, and Sc…
Rotating thin shells in (2+1)-dimensional asymptotically AdS spacetimes: Mechanical properties, Machian effects, and energy conditions
José P. S. Lemos, Francisco J. Lopes, Masato Minamitsuji
A rotating thin shell in a (2+1)-dimensional asymptotically AdS spacetime is studied. The spacetime exterior to the shell is the rotating BTZ spacetime and the interior is the empt…
Precessional instability in binary black holes with aligned spins
Davide Gerosa, Michael Kesden, Richard O'Shaughnessy +4
Binary black holes on quasicircular orbits with spins aligned with their orbital angular momentum have been testbeds for analytic and numerical relativity for decades, not least be…