Gravitational Waves from Low-Scale Cosmic Strings

25 Sept 2024, 16:30
16m
Main Auditorium (DESY Hamburg)

Main Auditorium

DESY Hamburg

Notkestr. 85 D-22607 Hamburg, Germany
Cosmology & Astroparticle Physics Parallel Wednesday Cosmo 1

Speaker

Tobias Schroeder (University of Münster)

Description

In this talk, I will discuss the effect of low cosmic string tensions on the associated stochastic gravitational wave background. I will show that the gravitational wave spectrum is qualitatively different from the one produced by cosmic strings with larger tensions. In fact, it exhibits a very distinct oscillatory feature with dips in the amplitude at multiples of the frequency of the first dip. This feature arises if none of the cosmic string loops chopped off from the long-string network have fully decayed yet. Despite the low tensions, such an SGWB would be measurable in future experiments.

Primary authors

Kai Schmitz (University of Münster) Tobias Schroeder (University of Münster)

Presentation materials