Modeling the beam of gravitational radiation from a cosmic string loop

The authors combine new (``multipoint'') methods with established asymptotic and numerical tools to calculate the emission of gravitational radiation from cosmic string loops over the entire celestial sphere from the ultra-low to the ultra-high frequency spectrum. These emissions contribute to the stochastic gravitational wave background and will be detectable by a wide range of instruments, from pulsar timing arrays to space-based gravitational wave detectors. An accurate description of the spectrum will be decisive for its detection.