4 papers
Illuminating the dark universe in the multi-messenger era
Philippe Brax, Anne-Christine Davis, Md Riajul Haque +8
The precision era of multi-messenger astronomy, together with modern astrophysical, cosmological, and gravitational wave observations, increasingly points toward the existence of a…
Effect of Torsion on Neutron Star Structure in Einstein-Cartan Gravity
Cédric Jockel, Leon Menger
Einstein-Cartan gravity is a close historical sibling of general relativity that allows for spacetime torsion. As a result, angular momentum couples to spacetime geometry in a simi…
A Theoretical Framework for Self-Gravitating k-Form Boson Stars with Internal Symmetries
Jakob Hoffmann, Cédric Jockel
Current boson star models are largely restricted to global symmetries and lower spin fields. In this work, we generalize these systems of self-gravitating bosonic fields to allow f…
Fermion Proca Stars: Vector Dark Matter Admixed Neutron Stars
Cédric Jockel, Laura Sagunski
Dark matter could accumulate around neutron stars in sufficient amounts to affect their global properties. In this work, we study the effect of a specific model for dark matter --…