{
  "id": "2007.13246",
  "version": "v1",
  "published": "2020-07-26T23:37:04.000Z",
  "updated": "2020-07-26T23:37:04.000Z",
  "title": "A targeted search for repeating fast radio bursts associated with gamma-ray bursts",
  "authors": [
    "Nipuni T. Palliyaguru",
    "Devansh Agarwal",
    "Golnoosh Golpayegani",
    "Ryan Lynch",
    "Duncan R. Lorimer",
    "Benjamin Nguyen",
    "Alessandra Corsi",
    "Sarah Burke-Spolaor"
  ],
  "comment": "7 pages, 4 figures, submitted to MNRAS",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "The origin of fast radio bursts (FRBs) still remains a mystery, even with the increased number of discoveries in the last three years. Growing evidence suggests that some FRBs may originate from magnetars. Large, single-dish telescopes such as Arecibo Observatory (AO) and Green Bank Telescope (GBT) have the sensitivity to detect FRB~121102-like bursts at gigaparsec distances. Here we present searches using AO and GBT that aimed to find potential radio bursts at 11 sites of past $\\gamma$--ray bursts that show evidence for the birth of a magnetar. We also performed a search towards GW170817, which has a merger remnant whose nature remains uncertain. We place $10\\,\\sigma$ fluence upper limits of $\\approx 0.036$ Jy ms at 1.4 GHz and $\\approx 0.063$ Jy ms at 4.5 GHz for AO data and fluence upper limits of $\\approx 0.085$ Jy ms at 1.4 GHz and $\\approx 0.098$ Jy ms at 1.9 GHz for GBT data, for a maximum pulse width of $\\approx 42$ ms. The AO observations had sufficient sensitivity to detect any FRB of similar luminosity to the one recently detected from the Galactic magnetar SGR 1935+2154. Assuming a Schechter function for the luminosity function of FRBs, we find that our non-detections favor a steep power--law index ($\\alpha\\lesssim-1.0$) and a large cut--off luminosity ($L_0 \\gtrsim 10^{42}$ erg/s).",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-07-26T23:37:04.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "repeating fast radio bursts",
      "jy ms",
      "gamma-ray bursts",
      "targeted search",
      "fluence upper limits"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}