67 citations · 111 across the 8 of their papers we have counts for
9 papers
Probing departures from Schwarzschild geometry with the S301 star and kilometre-baseline interferometry
Rodrigo P. Silva, Alexandre C. M. Correia, Paulo J. V. Garcia
The S301 star reaches a pericentre one tenth that of S2, opening a new regime for probing black-hole spin and departures from Schwarzschild. We develop a post-Newtonian secular Ham…
A solution to the paradox of youth in the Galactic centre
Rodrigo P. Silva, Alexandre C. M. Correia, Tjarda C. N. Boekholt +1
The supermassive black hole at the Galactic centre, Sgr A*, is surrounded by an S cluster of young stars. These stars are predominantly B-type stars, but their origin remains uncer…
Spin-spin coupling in stellar binaries
Alexandre C. M. Correia
Spin-orbit misalignment is increasingly observed in binary stars, but its origin remains uncertain. We study the secular spin dynamics of stellar binaries and derive the associated…
Dynamical evolution of the Uranian satellite system II. Crossing of the 5/3 Ariel-Umbriel mean motion resonance
Sérgio R. A. Gomes, Alexandre C. M. Correia
At present, the main satellites of Uranus are not involved in any low order mean motion resonance (MMR). However, owing to tides raised in the planet, Ariel and Umbriel most likely…
Dynamical evolution of the Uranian satellite system I. From the 5/3 Ariel-Umbriel mean motion resonance to the present
Sérgio R. A. Gomes, Alexandre C. M. Correia
Mutual gravitational interactions between the five major Uranian satellites raise small quasi-periodic fluctuations on their orbital elements. At the same time, tidal interactions…
Stability maps for the 5/3 mean motion resonance between Ariel and Umbriel with inclination
Sérgio R. A. Gomes, Alexandre C. M. Correia
The evolution of the five largest satellites of Uranus during the crossing of the 5/3 mean motion resonance between Ariel and Umbriel is strongly affected by chaotic motion. Studie…
Stellar and planetary Cassini states
Alexandre C. M. Correia
Cassini states correspond to equilibria of the spin axis of a body when its orbit is perturbed. They were initially described for satellites, but the spin axis of stars and planets…
Cassini states for black hole binaries
Alexandre C. M. Correia
Cassini states correspond to the equilibria of the spin axis of a body when its orbit is perturbed. They were initially described for planetary satellites, but the spin axes of bla…
Dynamical stability analysis of the HD202206 system and constraints to the planetary orbits
J. Couetdic, J. Laskar, A. C. M. Correia +2
Long-term precise Doppler measurements with the CORALIE spectrograph revealed the presence of two massive companions to the solar-type star HD202206. Although the three-body fit of…