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Quasi-periodic eruptions from a newly active black hole

Nature Astronomy volume 9, pages 781–782 (2025)Cite this article

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A galactic nucleus began emitting X-rays, periodically, in 2024. These quasi-periodic eruptions have the highest fluxes and longest timescales of any detected so far, and are thought to originate from newly formed accretion flows onto a supermassive black hole.

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Fig. 1: Burst duration and recurrence times for quasi-periodic eruptions (QPEs).

References

  1. Sánchez-Sáez, P. et al. SDSS1335+0728: The awakening of a ∼106 M⊙ black hole. Astron. Astrophys. 688, A157 (2024). This paper reports the discovery of the optical transient from Ansky.

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  2. Hernandez-Garcia, L. et al. Swift and Chandra X-ray detections in the nucleus of SDSS J133519.91+072807.4. The Astronomer’s Telegram 16576 https://www.astronomerstelegram.org/ (2024). This alert reports nuclear X-ray emission from Ansky.

  3. Chakraborty, J. et al. Testing EMRI models for quasi-periodic eruptions with 3.5 yr of monitoring eRO-QPE1. Astrophys. J. 965, 12 (2024). This paper includes a review of the physical properties of QPEs.

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  4. Nicholl, M. et al. Quasi-periodic X-ray eruptions years after a nearby tidal disruption event. Nature 634, 804–808 (2024). This paper presents evidence of the relation between QPEs and TDEs.

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  5. Franchini, A. et al. Quasi-periodic eruptions from impacts between the secondary and a rigidly precessing accretion disc in an extreme mass-ratio inspiral system. Astron. Astrophys. 675, A100 (2023). This paper discusses models for EMRIs.

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This is a summary of: Hernández-García, L. et al. Discovery of extreme quasi-periodic eruptions in a newly accreting massive black hole. Nat. Astron. https://doi.org/10.1038/s41550-025-02523-9 (2025).

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Quasi-periodic eruptions from a newly active black hole. Nat Astron 9, 781–782 (2025). https://doi.org/10.1038/s41550-025-02536-4

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