{
  "id": "2103.00797",
  "version": "v1",
  "published": "2021-03-01T06:40:46.000Z",
  "updated": "2021-03-01T06:40:46.000Z",
  "title": "Gravitational waves from Population III binary black holes are consistent with LIGO/Virgo O3a data for the chirp mass larger than $\\sim 20M_{\\odot}$",
  "authors": [
    "Tomoya Kinugawa",
    "Takashi Nakamura",
    "Hiroyuki Nakano"
  ],
  "comment": "submitted to MNRAS Letter. Comments Welcome",
  "categories": [
    "astro-ph.HE",
    "astro-ph.CO",
    "gr-qc"
  ],
  "abstract": "The probability number distribution function of binary black hole mergers observed by LIGO/Virgo O3a has double peaks as a function of chirp mass $M_c$, total mass $M_t$, primary black hole mass $M_1$ and secondary one $M_2$, respectively. The larger chirp mass peak is at $M_c \\cong 30 M_{\\odot}$. The distribution of $M_2$ vs. $M_1$ follows the relation of $M_2\\cong 0.7M_1$. For initial mass functions of Population III stars in the form of $f(M) \\propto M^{-\\alpha}$, population synthesis numerical simulations with $0\\leq \\alpha \\leq 1.5$ are consistent with O3a data for $M_c \\gtrsim 20M_{\\odot}$. The distribution of $M_2$ vs. $M_1$ for simulation data also agrees with $M_2\\cong 0.7M_1$ relation of O3a data.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-03-01T06:40:46.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "binary black hole",
      "chirp mass larger",
      "ligo/virgo o3a data",
      "gravitational waves",
      "population"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}