Cosmic string bursts in LISA

Auclair, Pierre;Babak, Stanislav;Quelquejay Leclere, Hippolyte;Steer, Danièle A.
(2023) Physical Review D — Vol. 108, n° 4, p. 3519 (2023)

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Authors
  • Auclair, Pierreorcid-logoUCLouvain
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  • Babak, Stanislav
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  • Quelquejay Leclere, Hippolyte
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  • Steer, Danièle A.
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Abstract
Cosmic string cusps are sources of short-lived, linearly polarized gravitational wave bursts which can be searched for in gravitational wave detectors. We assess the capability of LISA to detect these bursts using the latest LISA configuration and operational assumptions. For such short bursts, we verify that LISA can be considered as “frozen”, namely that one can neglect LISA’s orbital motion. We consider two models for the network of cosmic string loops, and estimate that LISA should be able to detect 4–30 bursts per year assuming a string tension Gμ≈10-10.6–10-10.1 and detection threshold SNR≥20. Nondetection of these bursts would constrain the string tension to Gμ≲10-11 for both models.
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Auclair, P., Babak, S., Quelquejay Leclere, H., & Steer, D. A. (2023). Cosmic string bursts in LISA. Physical Review D, 108(4), 3519. https://doi.org/10.1103/physrevd.108.043519 (Original work published 2023)