{
  "id": "1805.07158",
  "version": "v1",
  "published": "2018-05-18T11:57:32.000Z",
  "updated": "2018-05-18T11:57:32.000Z",
  "title": "New classification of solar flares based on the maximum flux in Soft X-rays and on duration of flare",
  "authors": [
    "Elena Bruevich"
  ],
  "comment": "25 pages, 9 figures",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "Solar flare activity is characterized by classification systems, both in optical and Soft X-ray ranges. The most generally accepted classifications of solar flares describe important parameters of flare such as the maximum of brightness of the flare in optical range in $H_{\\alpha}$ (flare class in $H_{\\alpha}$ is changed from F to B), area of the flare in $H_{\\alpha}$ which is changed from S (less than 2 square degrees) to 4 (more than 24.7 square degrees) and the maximum amplitude of the Soft X-ray flux in the band 0.1-0.8 nm (X-ray flare of classes from C to X). A new classification of solar flares which is proposed in this paper -- the X-ray index of flare XI, based on measurements of radiation in the range 0.1-0.8 nm on the GOES satellites. The XI index has a clear physical interpretation associated with the total flare energy in the range 0.1-0.8 nm. XI is easily calculated for each flare with use of available GOES data. The XI index can be used to assess flares along with other important geoeffective parameters.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2018-05-18T11:57:32.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "maximum flux",
      "square degrees",
      "xi index",
      "total flare energy",
      "solar flare activity"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 25,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}