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arXiv · 2505.06125

Revealing the nature of long-period transients with space-based gravitational-wave interferometers

Arthur G. Suvorov·Clara Dehman·José A. Pons
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Abstract

A few members of the recently discovered class of long-period transients have been identified as binaries with white-dwarf primaries. In most cases, however, electromagnetic data are inconclusive, and isolated magnetars or compact binaries remain viable. If the pulsation period matches that of the orbit -- as is the case for ILT J1101+5521 and GLEAM-X J0704--37 -- some of these elusive radio transients could be gravitational-wave bright in the mHz band. Space-based interferometers could thus be used to provide independent constraints on their nature. We quantify the signal-to-noise ratio for the known systems under various scenarios and show that a few could be detectable for sufficiently large chirp masses. Astrophysical implications for (non)detections are discussed.

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Arthur G. Suvorov, Clara Dehman, José A. Pons. 2025-05-09. Revealing the nature of long-period transients with space-based gravitational-wave interferometers. https://doi.org/10.3847/1538-4357%2Fadfc55

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