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GR: Fachverband Gravitation und Relativitätstheorie

GR 6: Poster

GR 6.11: Poster

Dienstag, 31. März 2020, 17:00–18:30, Zelt

Quasinormal modes of dilatonic Reissner-Nordström black holes — Jose Luis Blázquez-Salcedo, •Sarah Kahlen, and Jutta Kunz — Carl von Ossietzky Universität, Oldenburg, Germany

Quasinormal modes of static spherically symmetric dilatonic Reissner-Nordström black holes for general values of the electric charge and of the dilaton coupling constant are shown. The spectrum of quasinormal modes is composed of five families of modes: polar and axial gravitational-led modes, polar and axial electromagnetic-led modes, and polar scalar-led modes. The spectrum strongly depends on the electric charge and on the dilaton coupling constant. For large electric charge and large dilaton coupling, strong deviations from the Reissner-Nordström modes arise. In particular, isospectrality is strongly broken, both for the electromagnetic-led and the gravitational-led modes, for large values of the charge.