Banks of templates for directed and all-sky narrow-band searches of continuous gravitational waves from spinning neutron stars with several spindowns

TL;DR

This paper develops efficient template banks for directed and all-sky searches of continuous gravitational waves from spinning neutron stars, optimizing computational methods for multiple spindown parameters.

Contribution

It introduces template banks compatible with the $ ext{F}$-statistic method, enabling faster and more efficient searches for continuous gravitational waves.

Findings

Template banks support both all-sky and directed searches.

Enables use of FFT and data resampling for efficiency.

Applicable to searches with multiple spindown parameters.

Abstract

We construct efficient banks of templates suitable for searches of continuous gravitational waves from isolated spinning neutron stars. We assume that the search algorithm is based on the time-domain maximum-likelihood $\mathcal{F}$-statistic and we consider narrow-band searches with several spindown parameters included. Our template banks are suitable for both all-sky and directed searches and they enable the usage of the fast Fourier transform in the computation of the $\mathcal{F}$-statistic as well as, in the case of all-sky searches, efficient resampling of data to barycentric time.