{
  "id": "1707.09144",
  "version": "v1",
  "published": "2017-07-28T08:20:29.000Z",
  "updated": "2017-07-28T08:20:29.000Z",
  "title": "The Relation between Magnetic Fields and X-ray Emission for Solar Microflares and Active Regions",
  "authors": [
    "A. S. Kirichenko",
    "S. A. Bogachev"
  ],
  "comment": "17 pages, 12 figures",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "We present the result of comparison between magnetic field parameters and the intensity of X-ray emission for solar microflares with Geosynchronous Operational Environmental Satellites (GOES) classes from A0.02 to B5.1. For our study, we used the monochromatic MgXII Imaging Spectroheliometer (MISH), Full-disk EUV Telescope (FET) and Solar PHotometer in X-rays (SphinX) instruments onboard the Complex Orbital Observations Near-Earth of Activity of the Sun-Photon (CORONAS-Photon) spacecraft because of their high sensitivity in soft X-rays. The peak flare flux (PFF) for solar microflares was found to depend on the strength of the magnetic field and total unsigned magnetic flux as a power-law function. In the spectral range 2.8-36.6 \\AA\\ which shows very little increase related to microflares the power-law index of the relation between the X-ray flux and magnetic flux for active regions is 1.48 $\\pm$ 0.86, which is close to the value obtained previously by Pevtsov et al. (Astrophys. J. 598, 1387, 2003) for different types of solar and stellar objects. In the spectral range 1-8 \\AA\\ the power-law indices for PFF($B$) and PFF($\\Phi$) for microflares are 3.87 $\\pm$ 2.16 and 3 $\\pm$ 1.6 respectively. We also make suggestions on the heating mechanisms in active regions and microflares under the assumption of loops with constant pressure and heating using the Rosner-Tucker-Vaiana (RTV) scaling laws.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-07-28T08:20:29.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "85-05"
    ],
    "keywords": [
      "solar microflares",
      "magnetic field",
      "active regions",
      "x-ray emission",
      "spectral range"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 17,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}