High Speed Source Localization in Searches for Gravitational Waves from Compact Object Collisions

Abstract

Multi-messenger astronomy is of great interest. The localization speed of gravitational wave sources is important for the success of electromagnetic follow-up. Although current gravitational wave source localization methods take up to a few seconds, even that is not sufficient for some electromagnetic bands. Therefore, one needs a more rapid localization method even if it is less accurate. Building upon an Excess power method, we describe a new localization method for compact object collisions that produces posterior probability maps in only a few hundred milliseconds. Some accuracy is lost, with the searched sky areas being approximately $10$ times larger. We imagine this new technique playing a role in a hierarchical scheme where fast early location estimates are iteratively improved upon as better analyses complete on longer time scales.

prd version

References in corpus (5)

• GW170817: Observation of Gravitational Waves from a Binary Neutron Star Inspiral
• Advanced Virgo: a 2nd generation interferometric gravitational wave detector
• Multi-messenger Observations of a Binary Neutron Star Merger
• Advanced LIGO
• Robust parameter estimation for compact binaries with ground-based gravitational-wave observations using the LALInference software library

Cited by in corpus (4)

• Rapid localization of gravitational wave sources from compact binary coalescences using deep learning
• Early warning of precessing compact binary merger with third-generation gravitational-wave detectors
• Semianalytical Approach for Sky Localization of Gravitational Waves
• Sky localization and polarization mode reconstruction of gravitational waves from GW170104 and GW150914