Image Details
 
                    Caption: Figure 5.
Secular evolution of QPE energy output (luminosity integrated over ±3 e-folds from peak). The most recent epochs appear to show an overall decreasing trend, and QPEs are not seen in 2023 October. We compute the 2023 October upper limit of the total energy by assuming the duration of possible QPEs stays roughly consistent with previous epochs. The peak of one QPE is seen in 2023 November, but we cannot estimate the total energy output without a better sampling of the overall flare.
© 2024. The Author(s). Published by the American Astronomical Society.