{
  "id": "1101.5563",
  "version": "v1",
  "published": "2011-01-28T16:24:53.000Z",
  "updated": "2011-01-28T16:24:53.000Z",
  "title": "Multicomponent He I 10830 Å profiles in an active filament",
  "authors": [
    "C. Sasso",
    "A. Lagg",
    "S. K. Solanki"
  ],
  "comment": "Accepted for publication in Astronomy and Astrophysics on September 27, 2010",
  "journal": "A&A 526, A42 (2011)",
  "doi": "10.1051/0004-6361/200912956",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "We present new spectropolarimetric observations of the chromospheric He I 10830 {\\AA} multiplet observed in a filament during its phase of activity. The data were recorded with the new Tenerife Infrared Polarimeter (TIP-II) at the German Vacuum Tower Telescope (VTT) on 2005 May 18. We inverted the He Stokes profiles using multiple atmospheric components. The observed He Stokes profiles display a remarkably wide variety of shapes. Most of the profiles show very broad Stokes I absorptions and complex and spatially variable Stokes V signatures. The inversion of the profiles shows evidence of different atmospheric blue- and redshifted components of the He I lines within the resolution element (1 arcsec), with supersonic velocities of up to 100 km/s. Up to five different atmospheric components are found in the same profile. We show that even these complex profiles can be reliably inverted.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-01-28T16:24:53.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "active filament",
      "multicomponent",
      "german vacuum tower telescope",
      "multiple atmospheric components",
      "stokes profiles display"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Astronomy and Astrophysics",
      "year": 2011,
      "month": "Feb",
      "volume": 526
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2011A&A...526A..42S",
      "inspire": 885902
    }
  }
}