All-sky, narrowband, gravitational-wave radiometry with folded data

Eric Thrane, Sanjit Mitra, Nelson Christensen, Vuk Mandic, Anirban Ain

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10 Scopus citations


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 ≈0.1-2Hz. It will simultaneously provide a sensitive search algorithm for other persistent, narrowband signals from unexpected sources.

Original languageEnglish (US)
Article number124012
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number12
StatePublished - Jun 3 2015

Bibliographical note

Publisher Copyright:
© 2015 American Physical Society.


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