bn8 - Relativistic Binary Stars Merging: Population Synthesis &/or Multimessanger Observations |
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Speaker |
Tonelli, Francesco |
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| Talk Title |
Gravitational waves echoes from Compact Stars |
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Abstract |
It has recently been claimed that a gravitational wave echo has been produced in the GW170817 event with a frequency of about 72 Hz. Gravitational wave echoes can be produced after the merging of compact stars if the post-merger object features a photon-sphere. In this talk I will speculate on the possibility that, during the merging, an ultracompact star is produced that crosses the photon-sphere line in the mass radius diagram. Considering realistic equation of states, the estimated frequencies of the GW echoes are of the order of tens of kHz. |
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