Bremen 2017 – wissenschaftliches Programm
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GR: Fachverband Gravitation und Relativitätstheorie
GR 6: Relativistische Astrophysik
GR 6.6: Vortrag
Dienstag, 14. März 2017, 15:40–16:00, SFG 0140
White Dwarfs in Scalar-Tensor-Theory — •Kevin Eickhoff, Burkhard Kleihaus, and Jutta Kunz — Institut für Physik, Universität Oldenburg, D- 26111 Oldenburg, Germany,
Scalar-Tensor Theory (STT) can give rise to new branches of compact objects, which exhibit spontaneous scalarization, as first observed for neutron stars. In scalarized objects the mass-radius relation can strongly deviate from the one found in General Relativity. Here we investigate whether scalarization can also occur in white dwarfs. We employ a STT with function A(ϕ) = eβ/2 ϕ2, and vary the coupling constant β for the scalar field ϕ. We discuss the dependence of the mass-radius relation and the presence of scalarization on the strength of the coupling β.