A 4200-hour HyperFlash and ÉCLAT campaign on the hyperactive FRB 20240114A: constraining energetics with the most brilliant bursts
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| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Preprint |
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2026
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| author | Ould-Boukattine, O. S. Cooper, A. J. Cook, A. M. Hessels, J. W. T. Hewitt, D. M. Huang, J. Cognard, I. Dijkema, T. J. Gawroński, M. P. Herrmann, W. Kirsten, F. Moroianu, A. Pleunis, Z. Puchalska, W. Ranguin, S. Snelders, M. P. Telkamp, T. |
| author_facet | Ould-Boukattine, O. S. Cooper, A. J. Cook, A. M. Hessels, J. W. T. Hewitt, D. M. Huang, J. Cognard, I. Dijkema, T. J. Gawroński, M. P. Herrmann, W. Kirsten, F. Moroianu, A. Pleunis, Z. Puchalska, W. Ranguin, S. Snelders, M. P. Telkamp, T. |
| contents | Hyperactive repeaters provide a unique window into the evolving environments and energy budgets of fast radio burst (FRB) sources, though they may not be representative of the FRB population in general. High-cadence observations are key to capturing the rarest and most energetic bursts, which occur only once per hundreds to thousands of hours. Here we present an unprecedented $4{,}200$-hour observing campaign targeting FRB 20240114A as part of the HyperFlash and ÉCLAT FRB monitoring programs. Over $806$ days, we detected $178$ high-energy ($\sim$$10^{40-42}$ erg) bursts with HyperFlash, which together amount to $4.4 \times 10^{42}$ erg of released radio energy (assuming isotropic emission and 1-GHz emission bandwidth). The cumulative energy of the HyperFlash bursts is about twice that of $\sim$$11{,}000$ lower-energy bursts detected with FAST, emphasising the significant role that the highest-energy bursts play in depleting the central engine's stored energy. In fact, the single most brilliant burst from our sample, which we term the STROOP, contributes roughly $1/3$ of all the energy we measure, and is at the maximum energy seen in studies of both repeating and apparently one-off FRBs alike. We also find a break in the burst energy distribution at $\sim$$2\times10^{40}$ erg and a linear dispersion measure (DM) increase of $+0.96 \pm 0.06$ pc cm$^{-3}$ over a period of $318$ days. We discuss these findings in the context of a magnetar source model and highlight comparisons with the energetics of intermediate and giant X-ray/$γ$-ray flares from Galactic sources. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2605_18513 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A 4200-hour HyperFlash and ÉCLAT campaign on the hyperactive FRB 20240114A: constraining energetics with the most brilliant bursts Ould-Boukattine, O. S. Cooper, A. J. Cook, A. M. Hessels, J. W. T. Hewitt, D. M. Huang, J. Cognard, I. Dijkema, T. J. Gawroński, M. P. Herrmann, W. Kirsten, F. Moroianu, A. Pleunis, Z. Puchalska, W. Ranguin, S. Snelders, M. P. Telkamp, T. High Energy Astrophysical Phenomena Hyperactive repeaters provide a unique window into the evolving environments and energy budgets of fast radio burst (FRB) sources, though they may not be representative of the FRB population in general. High-cadence observations are key to capturing the rarest and most energetic bursts, which occur only once per hundreds to thousands of hours. Here we present an unprecedented $4{,}200$-hour observing campaign targeting FRB 20240114A as part of the HyperFlash and ÉCLAT FRB monitoring programs. Over $806$ days, we detected $178$ high-energy ($\sim$$10^{40-42}$ erg) bursts with HyperFlash, which together amount to $4.4 \times 10^{42}$ erg of released radio energy (assuming isotropic emission and 1-GHz emission bandwidth). The cumulative energy of the HyperFlash bursts is about twice that of $\sim$$11{,}000$ lower-energy bursts detected with FAST, emphasising the significant role that the highest-energy bursts play in depleting the central engine's stored energy. In fact, the single most brilliant burst from our sample, which we term the STROOP, contributes roughly $1/3$ of all the energy we measure, and is at the maximum energy seen in studies of both repeating and apparently one-off FRBs alike. We also find a break in the burst energy distribution at $\sim$$2\times10^{40}$ erg and a linear dispersion measure (DM) increase of $+0.96 \pm 0.06$ pc cm$^{-3}$ over a period of $318$ days. We discuss these findings in the context of a magnetar source model and highlight comparisons with the energetics of intermediate and giant X-ray/$γ$-ray flares from Galactic sources. |
| title | A 4200-hour HyperFlash and ÉCLAT campaign on the hyperactive FRB 20240114A: constraining energetics with the most brilliant bursts |
| topic | High Energy Astrophysical Phenomena |
| url | https://arxiv.org/abs/2605.18513 |