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No UV-bright Eruptions from SN 2023ixf in GALEX Imaging 15-20 Years Before Explosion
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abstract
We analyze pre-explosion ultraviolet (UV) imaging of the nearby Type II supernova SN 2023ixf in search of precursor variability. No outbursts are seen in observations obtained 15-20 yr prior to explosion to a limit of $L_{NUV} \approx 1000~L_{sun}$ and $L_{NUV} \approx 2000~L_{sun}$. The time period of these non-detections roughly corresponds to changes in the circumstellar density inferred from early spectra and photometry.
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SN 2023ixf: The Closest Supernova of the Decade
SN 2023ixf is a type II supernova that exploded inside dense, confined circumstellar material lost by its red supergiant progenitor in the final years before explosion, as established by synthesizing over 80 published...
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