61 citations · 146 across the 5 of their papers we have counts for
5 papers
Deformed black hole in Sagittarius A
Timothy Anson, Eugeny Babichev, Christos Charmousis
We analyze the post-Newtonian orbit of stars around a deformed Kerr black hole. The deformation we consider is a class of disformal transformations of a nontrivial Kerr solution in…
Disforming the Kerr metric
Timothy Anson, Eugeny Babichev, Christos Charmousis +1
Starting from a recently constructed stealth Kerr solution of higher order scalar tensor theory involving scalar hair, we analytically construct disformal versions of the Kerr spac…
Vainshtein screening for slowly rotating stars
Timothy Anson, Eugeny Babichev
We study the Vainshtein mechanism in the context of slowly rotating stars in scalar-tensor theories. While the Vainshtein screening is well established for spherically symmetric sp…
Reconciling spontaneous scalarization with cosmology
Timothy Anson, Eugeny Babichev, Sabir Ramazanov
We discuss the Damour--Esposito-Farèse model of gravity, which predicts the spontaneous scalarization of neutron stars in a certain range of parameter space. In the cosmological se…
Cosmological instability of scalar-Gauss-Bonnet theories exhibiting scalarization
Timothy Anson, Eugeny Babichev, Christos Charmousis +1
In a subclass of scalar-tensor theories, it has been shown that standard general relativity solutions of neutron stars and black holes with trivial scalar field profiles are unstab…