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Speaker |
Pnigouras, Pantelis |
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Coauthors |
Kokkotas, Kostas D. |
| Talk Title |
Saturation of the f-mode Instability in Neutron Stars |
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Abstract |
As a result of the Chandrasekhar-Friedman-Schutz (CFS) instability, the f-mode (fundamental oscillation) in a newborn neutron star can grow and produce a significant gravitational wave signal. This star is usually the result of a core-collapse supernova explosion, but may also be the aftermath of a binary neutron star merger, where a rapidly rotating, supramassive configuration is formed, before its collapse to a black hole. The gravitational wave signal could possibly be detected by the next generation gravitational-wave detectors and, thus, provide useful information about the neutron star equation of state. However, non-linear mode coupling suppresses the growth of the f-mode and saturates it. The saturation amplitude determines the strength of the signal, as well as the evolutionary route of the star inside the so-called instability window. |
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