Prolate Proca stars
1 : Departamento de Matemática da Universidade de Aveiro and Centre for Research and Development in Mathematics and Applications (CIDMA)
2 : Departamento de Astronomía y Astrofísica, Universitat de València
3 : Centro de Astrofísica e Gravitação –Instituto Superior Técnico
We present a new family of solitonic solutions of the Einstein-(complex) Proca model. They are static and axially symmetric, with an odd-parity electric Proca potential, the surfaces of constant energy density exhibiting a prolate shape. Rather counterintuitive, for a fixed Noether charge, these ‘prolate Proca stars' are less massive than the spherical ones. This suggests that the prolate configurations may correspond to the fundamental states, a result confirmed by the full nonlinear evolution.