All-sky, narrowband, gravitational-wave radiometry with folded data
arXiv:1504.02158 · doi:10.1103/PhysRevD.91.124012
Abstract
Gravitational-wave radiometry is a powerful tool by which weak signals with unknown signal morphologies are recovered through a process of cross correlation. Radiometry has been used, e.g., to search for persistent signals from known neutron stars such as Scorpius X-1. In this paper, we demonstrate how a more ambitious search--for persistent signals from unknown neutron stars--can be efficiently carried out using folded data, in which an entire ~year-long observing run is represented as a single sidereal day. The all-sky, narrowband radiometer search described here will provide a computationally tractable means to uncover gravitational-wave signals from unknown, nearby neutron stars in binary systems, which can have modulation depths of ~0.1-2 Hz. It will simultaneously provide a sensitive search algorithm for other persistent, narrowband signals from unexpected sources.
6 pages, 1 figure
References in corpus (13)
- Advanced Virgo: a 2nd generation interferometric gravitational wave detector
- Upper limits on gravitational wave emission from 78 radio pulsars
- Upper limit map of a background of gravitational waves
- Long gravitational-wave transients and associated detection strategies for a network of terrestrial interferometers
- The cross-correlation search for periodic gravitational waves
- First all-sky search for continuous gravitational waves from unknown sources in binary systems
- Resistive relaxation of a magnetically confined mountain on an accreting neutron star
- Measuring neutron-star ellipticity with measurements of the stochastic gravitational-wave background
- The detectability of eccentric compact binary coalescences with advanced gravitational-wave detectors
- Improved estimate of the detectability of gravitational radiation from a magnetically confined mountain on an accreting neutron star
- Three-dimensional stability of magnetically confined mountains on accreting neutron stars
- Detecting very long-lived gravitational-wave transients lasting hours to weeks
- Detecting compact binary coalescences with seedless clustering