# München 2019 – wissenschaftliches Programm

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# GR: Fachverband Gravitation und Relativitätstheorie

## GR 7: Modified Gravity and Applications

### GR 7.2: Vortrag

### Mittwoch, 20. März 2019, 11:45–12:00, HS 5

**Quasinormal modes of neutron stars with scalar hair.** — •Jose Luis Blázquez-Salcedo^{1}, Fech Scen Khoo^{2}, and Jutta Kunz^{1} — ^{1}University of Oldenburg, Institute of Physics, Oldenburg, Germany — ^{2}Ruder Bošković Institute, Zagreb, Croatia

In this talk we will discuss the quasinormal modes of neutron stars in modified theories of gravity, where the system possesses a (massive) scalar degree of freedom, in addition to the space-time and fluid degrees of freedom that are present in General Relativity. Hence we will show that the spectrum of resonances of the ringdown phase of the gravitational waves emitted by these objects is richer. We will discuss different properties of this spectrum, such as the dependence with the mass of the scalar field, the equation of state and total mass of the neutron star.