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

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

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7 Citations (Scopus)


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 similar to 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 similar to 0.1-2 Hz. It will simultaneously provide a sensitive search algorithm for other persistent, narrowband signals from unexpected sources.
Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalPhysical Review D
Issue number12
Publication statusPublished - 2015

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