{
  "abstract": "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 (∼1040 − 42 erg) bursts with HyperFlash, which together amount to 4.4 × 1042 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 ∼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 ∼2 × 1040 erg and a linear dispersion measure (DM) increase of +0.96 ± 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.",
  "abstract_shown": true,
  "affiliations": [
    "ASTRON, Netherlands Institute for Radio Astronomy , Oude Hoogeveensedijk 4, 7991 PD Dwingeloo ,",
    "Anton Pannekoek Institute for Astronomy, University of Amsterdam , Science Park 904, 1098 XH, Amsterdam ,",
    "Astrophysics, The University of Oxford , Keble Road, Oxford, OX1 3RH ,",
    "Trottier Space Institute, McGill University , 3550 rue University, Montréal, QC H3A 2A7 ,",
    "McGill University Department of Physics, , 3600 rue University, Montréal, QC H3A 2T8 ,",
    "Station de Radioastronomie de Nançay, Observatoire de Paris , PSL University, CNRS, Université d’Orléans, F-18330 Nançay ,",
    "Laboratoire de Physique et Chimie de l’Environnement et de l’Espace LPC2E UMR7328, Université d’Orléans , CNRS, F-45071 Orléans ,",
    "CAMRAS Dwingeloo Radio Telescope Foundation , Oude Hoogeveensedijk 4, 7991 PD Dwingeloo ,",
    "Institute of Astronomy, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University , Grudziadzka 5, 87-100 Toruń ,",
    "Astropeiler Stockert e.V. , Astropeiler 1-4, 53902 Bad Münstereifel ,",
    "Chalmers University of Technology Department of Physics and Astronomy, , Onsala Space Observatory, 439 92, Onsala ,"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 17,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "O S Ould-Boukattine",
      "orcid": "0000-0001-9381-8466"
    },
    {
      "affs": [
        2
      ],
      "name": "A J Cooper",
      "orcid": "0000-0002-4033-3139"
    },
    {
      "affs": [
        3,
        4,
        1
      ],
      "name": "A M Cook"
    },
    {
      "affs": [
        3,
        4,
        1,
        0
      ],
      "name": "J W T Hessels"
    },
    {
      "affs": [
        1
      ],
      "name": "D M Hewitt"
    },
    {
      "affs": [
        3,
        4
      ],
      "name": "J Huang"
    },
    {
      "affs": [
        5,
        6
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      "name": "I Cognard"
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    {
      "affs": [
        0,
        7
      ],
      "name": "T J Dijkema"
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    {
      "affs": [
        8
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      "name": "M P Gawroński"
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    {
      "affs": [
        9
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      "name": "W Herrmann"
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    {
      "affs": [
        10,
        0
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      "name": "F Kirsten"
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    {
      "affs": [
        1
      ],
      "name": "A Moroianu"
    },
    {
      "affs": [
        1,
        0
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      "name": "Z Pleunis"
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    {
      "affs": [
        8
      ],
      "name": "W Puchalska"
    },
    {
      "affs": [
        1
      ],
      "name": "S Ranguin"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "M P Snelders"
    },
    {
      "affs": [
        7
      ],
      "name": "T Telkamp"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/8r80g36zsqe5k.bib",
  "cited_by": 0,
  "doi": "10.1093/mnras/stag1957",
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  "id": "8r80g36zsqe5k",
  "issns": [
    "0035-8711",
    "1365-2966"
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  "licence_label": "CC BY 4.0",
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  "pmcid": null,
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  "published": "2026-10-16",
  "publisher": "Oxford University Press (OUP)",
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      "origin": "openalex:3103|Gamma-ray bursts and supernovae",
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  ],
  "title": "A 4200-hour HyperFlash and ÉCLAT campaign on the hyperactive FRB 20240114A: constraining energetics with the most brilliant bursts",
  "title_text": "A 4200-hour HyperFlash and ÉCLAT campaign on the hyperactive FRB 20240114A: constraining energetics with the most brilliant bursts",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:18:17Z",
  "url": "https://research.draconitic.com/paper/8r80g36zsqe5k",
  "venue": "Monthly Notices of the Royal Astronomical Society",
  "versions": [
    {
      "doi": "10.48550/arxiv.2605.18513",
      "pid": "6bgkedksm99ee",
      "relation": "preprint",
      "title": "A 4200-hour HyperFlash and ÉCLAT campaign on the hyperactive FRB 20240114A: constraining energetics with the most brilliant bursts",
      "venue": "arXiv"
    }
  ]
}