29 citations · 53 across the 7 of their papers we have counts for
7 papers
On the catastrophe time of fluids under the action of a gravitational field
D. Astesiano, G. Ortenzi, M. L. Ruggiero
Motivated by the central role of the Zel'dovich approximation in the description of cosmic structure formation through gravitational collapse, we investigate Burgers-type dynamics…
Re-weighting dark matter in disc galaxies: a new general relativistic observational test
Davide Astesiano, Sergio L. Cacciatori, Massimo Dotti +2
A recent analysis of data from the ESA Gaia mission demonstrated that the kinematics of stars in the Milky Way can be modelled without invoking the presence of dark matter whatsoev…
Rigid rotation in GR and a generalization of the virial theorem
Davide Astesiano
In this work we study the properties of rigidly rotating neutral dust solutions in general relativity. This class of solutions gained relevance recently due to applications to the…
Black hole attractors and U(1) Fayet-Iliopoulos gaugings: analysis and classification
Davide Astesiano, Sergio L. Cacciatori, Alessio Marrani
We classify the critical points of the effective black hole potential which governs the attractor mechanism taking place at the horizon of static dyonic extremal black holes in $\m…
Towards a full general relativistic approach to galaxies
Davide Astesiano, Sergio L. Cacciatori, Federico Re
We analyze the dynamics of a single spiral galaxy from a general relativistic viewpoint. We employ the known family of stationary axially-symmetric solutions to Einstein gravity co…
De Sitter magnetic black hole dipole with a supersymmetric horizon
Sergio Luigi Cacciatori, Davide Astesiano
We find a new non BPS solution in gauged supergravity coupled to gauge fields and matter. It consists in a closed universe with two extremal black holes of equal…
Super throats with non trivial scalars
Davide Astesiano, Sergio Luigi Cacciatori
We find new BPS solutions in Fayet-Iliopoulos gauged supergravity with STU prepotential. These are stationary solutions carrying a Kerr-Newman throat spacetime geometry…