{
  "id": "2306.13993",
  "version": "v1",
  "published": "2023-06-24T14:56:01.000Z",
  "updated": "2023-06-24T14:56:01.000Z",
  "title": "Timing Analysis of a New Black Hole Candidate MAXI J1803-298 with Insight-HXMT and NICER",
  "authors": [
    "Haifan Zhu",
    "Xiao Chen",
    "Wei Wang"
  ],
  "comment": "11 pages, reference: 2023, MNRAS, 523, 4394-4404",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We present the timing analysis results of MAXI J1803$-$298, a black hole candidate, during its 2021 outburst using data obtained from the \\textit{Insight-}HXMT and \\textit{NICER} telescopes. Our analysis reveals that the source undergoes a state transition from the low/hard state to the hard intermediate state, followed by the soft intermediate state, and ultimately reaching the high/soft state. We searched for the quasi-periodic oscillations (QPOs) and studied the characteristics of the outburst. At the beginning of the outburst, the source was in the hard state, many type-C QPOs were seen in the \\textit{Insight-}HXMT data, and the frequency of these QPOs increased from $\\sim 0.16$ to $2.6$ Hz. Our analysis of the type-C QPOs' rms-frequency relationship indicates a turning point in the frequency. We also analyzed the phase lag versus frequency and energy relationship and deduced that the source likely has a high inclination angle, consistent with previous research. The observed rms and phase lag features in type-C QPOs could be explained by the Lense-Thirring precession model, while the alternatives would be still viable. The lag spectrum of type-B QPO exhibits a \"\\textit{U-shaped}\" pattern similar to many other sources, and the type-B QPOs' rms increase as the energy rises. This phenomenon can be explained by the dual-corona model.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2023-06-24T14:56:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "black hole candidate maxi",
      "timing analysis",
      "type-c qpos",
      "type-b qpo",
      "insight-hxmt"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 11,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}