{
  "id": "2104.13232",
  "version": "v1",
  "published": "2021-04-27T14:39:13.000Z",
  "updated": "2021-04-27T14:39:13.000Z",
  "title": "Influence of irradiation-driven winds on the evolution of intermediate-mass black hole X-ray binaries",
  "authors": [
    "Xiao-Qin Han",
    "Long Jiang",
    "Wen-Cong Chen"
  ],
  "comment": "10 pages, 5 figures, 1 table, ApJ in press",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "In young dense clusters, an intermediate-mass black hole (IMBH) may get a companion star via exchange encounters or tidal capture, and then evolves toward IMBH X-ray binary by the Roche lobe overflow. It is generally thought that IMBH X-ray binaries are potential ultra-luminous X-ray sources (ULXs), hence their evolution is very significant. However, the irradiation-driven winds by the strong X-ray flux from the accretion disks around the IMBHs play an important role in determining the evolution of IMBH X-ray binaries, and should be considered in the detailed binary evolution simulation. Employing the models with the MESA code, we focus on the influence of irradiation-driven winds on the evolution of IMBH X-ray binaries. Our simulations indicate that a high wind-driving efficiency ($f=0.01$ for $Z=0.02$, and $f=0.002$ for $Z=0.001$) substantially shorten the duration in the ULX stage of IMBH X-ray binaries with an intermediate-mass ($5~M_{\\odot}$) donor star. However, this effect can be ignored for high-mass ($10~M_{\\odot}$) donor stars. The irradiation effect ($f=0.01$ or $0.002$) markedly shrink the initial parameter space of IMBH binaries evolving toward ULXs with high luminosity ($L_{\\rm X}>10^{40}~\\rm erg\\,s^{-1}$) and hyperluminous X-ray sources in the donor-star mass versus orbital period diagram. Furthermore, the irradiation effect results in an efficient angular momentum loss, yielding to IMBH X-ray binaries with relatively close orbits. In our simulated parameter space, about 1\\% of IMBH binaries would evolve toward compact X-ray sources owing to short initial orbital periods, some of which might be detected as low-frequency gravitational wave sources.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-04-27T14:39:13.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "intermediate-mass black hole x-ray binaries",
      "imbh x-ray binary",
      "irradiation-driven winds",
      "x-ray sources",
      "short initial orbital periods"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}