Five pipelines searched 15 supernova remnants in O4a data and found no continuous gravitational-wave signal, with the best 95% upper limits reaching ~4e-26 strain near 300 Hz for Vela Jr.
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Searches for Continuous Gravitational Waves from Supernova Remnants in the first part of the LIGO-Virgo-KAGRA Fourth Observing run
Five pipelines searched 15 supernova remnants in O4a data and found no continuous gravitational-wave signal, with the best 95% upper limits reaching ~4e-26 strain near 300 Hz for Vela Jr.