Targeted search for the stochastic gravitational-wave background from the galactic millisecond pulsar population

Understand

The millisecond pulsars, old-recycled objects spinning with high frequency $\mathcal{O}$ (kHz) sustaining the deformation from their spherical shape, may emit gravitational waves (GW).

• These are one of the potential candidates contributing to the anisotropic stochastic gravitational-wave background (SGWB) observable in the ground-based GW detectors.
• Here, we present the results from a likelihood-based targeted search for the SGWB due to millisecond pulsars in the Milky Way, by analyzing the data from the first three observing runs of Advanced LIGO and Advanced Virgo detector.
• We assume that the shape of SGWB power spectra and the sky distribution is known \textit{a priori} from the population synthesis model.