A dedicated method for analysing moderately saturated measurements from Swift’s Ultraviolet and Optical Telescope is used to perform a time-resolved analysis for the initial white filter exposure of GRB 220101A. This analysis reveals a rapidly evolving ultraviolet and optical flare, distinguished by extremely high luminosity and unexpected temporal behaviour.
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This is a summary of: Jin, Z.-P. et al. An optical–ultraviolet flare with absolute AB magnitude of −39.4 detected in GRB 220101A. Nat. Astron. https://doi.org/10.1038/s41550-023-02005-w (2023).
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Observations of a very energetic ultraviolet and optical flare with a space telescope. Nat Astron 7, 1021–1022 (2023). https://doi.org/10.1038/s41550-023-02027-4
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DOI: https://doi.org/10.1038/s41550-023-02027-4
