{
  "id": "2105.12338",
  "version": "v1",
  "published": "2021-05-26T05:38:36.000Z",
  "updated": "2021-05-26T05:38:36.000Z",
  "title": "NICER uncovers the transient nature of the type-B quasi-periodic oscillation in the black hole candidate MAXI J1348-630",
  "authors": [
    "L. Zhang",
    "D. Altamirano",
    "P. Uttley",
    "F. Garcia",
    "M. Mendez",
    "J. Homan",
    "J. F. Steiner",
    "K. Alabarta",
    "D. J. K. Buisson",
    "R. A. Remillard",
    "K. C. Gendreau",
    "Z. Arzoumanian",
    "C. Markwardt",
    "T. E. Strohmayer",
    "J. Neilsen",
    "A. Basak"
  ],
  "comment": "23 pages, 12 figures, accepted for publication in MNRAS",
  "categories": [
    "astro-ph.HE"
  ],
  "abstract": "We present a systematic spectral-timing analysis of a fast appearance/disappearance of a type-B quasi-periodic oscillation (QPO), observed in four NICER observations of MAXI J1348-630. By comparing the spectra of the period with and without the type-B QPO, we found that the main difference appears at energy bands above ~2 keV, suggesting that the QPO emission is dominated by the hard Comptonised component. During the transition, a change in the relative contribution of the disk and Comptonised emission was observed. The disk flux decreased while the Comptonised flux increased from non-QPO to type-B QPO. However, the total flux did not change too much in the NICER band. Our results reveal that the type-B QPO is associated with a redistribution of accretion power between the disk and Comptonised emission. When the type-B QPO appears, more accretion power is dissipated into the Comptonised region than in the disk. Our spectral fits give a hint that the increased Comptonised emission may come from an additional component that is related to the base of the jet.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2021-05-26T05:38:36.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "black hole candidate maxi",
      "type-b quasi-periodic oscillation",
      "transient nature",
      "type-b qpo",
      "nicer uncovers"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 23,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}