{
  "id": "2107.14339",
  "version": "v1",
  "published": "2021-07-29T21:38:00.000Z",
  "updated": "2021-07-29T21:38:00.000Z",
  "title": "The Fast Radio Burst FRB 20201124A in a star forming region: constraints to the progenitor and multiwavelength counterparts",
  "authors": [
    "L. Piro",
    "G. Bruni",
    "E. Troja",
    "B. O'Connor",
    "F. Panessa",
    "R. Ricci",
    "B. Zhang",
    "M. Burgay",
    "S. Dichiara",
    "K. J. Lee",
    "S. Lotti",
    "J. R. Niu",
    "M. Pilia",
    "A. Possenti",
    "M. Trudu",
    "H. Xu",
    "W. W. Zhu",
    "A. S. Kutyrev",
    "S. Veilleux"
  ],
  "comment": "Submitted to A&A letters",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We present the results of a multiwavelength campaign of FRB20201124A, the second closest repeating fast radio burst recently localized in a nearby (z=0.0978) galaxy. Deep VLA observations led to the detection of a quiescent radio emission, also marginally visible in X-rays with Chandra. Imaging at 22 GHz allowed us to resolve the source on a scale of $\\gtrsim 1$ arcsec in a direction tangential to the center of the host galaxy and locate it at the position of the FRB, within an error of $0.2$ arcsec. EVN and e-MERLIN observations sampled small angular scales, from 2 to 100 mas, providing tight upper limits on the presence of a compact source and evidence for diffuse radio emission. We argue that this emission is associated with enhanced star formation activity in the proximity of the FRB, corresponding to a star formation rate of $\\approx 10\\ {\\rm M}_\\odot {\\rm yr}^{-1}$. The surface star formation rate at the location of FRB20201124A is two orders of magnitude larger than typically observed in other precisely localized FRBs. Such a high SFR is indicative of this FRB source being a new-born magnetar produced from a SN explosion of a massive star progenitor. Upper limits to the X-ray counterparts of 49 radio bursts observed in our simultaneous FAST, SRT and Chandra campaign are consistent with a magnetar scenario.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-07-29T21:38:00.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "fast radio burst frb 20201124a",
      "star forming region",
      "multiwavelength counterparts",
      "sampled small angular scales",
      "observations sampled small angular"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}