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arXiv · 2005.08163

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

Takuya Tsutsui·Kipp Cannon·Leo Tsukada
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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.

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Takuya Tsutsui, Kipp Cannon, Leo Tsukada. 2020-05-17. High Speed Source Localization in Searches for Gravitational Waves from Compact Object Collisions. https://doi.org/10.1103/physrevd.103.043011

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