20-23 September 2021
Europe/Athens timezone

Cosmic String Loop Collapse in full general relativity

Not scheduled
Oral presentation


Dr Thomas Helfer (Johns Hopkins University)


We construct, for the first time, the time-domain gravitational wave strain waveform from the collapse of a strongly gravitating Abelian Higgs cosmic string loop in full general relativity. We show that the strain exhibits a large memory effect during merger, ending with a burst and the characteristic ringdown as a black hole is formed. Furthermore, we investigate the waveform and energy emitted as a function of string width, loop radius and string tension Gμ. We show that the efficiency is only weakly dependent on the initial string width and initial loop radii.

Primary author

Dr Thomas Helfer (Johns Hopkins University)

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