{
  "id": "1604.04078",
  "version": "v1",
  "published": "2016-04-14T08:54:50.000Z",
  "updated": "2016-04-14T08:54:50.000Z",
  "title": "The instability and non-existence of multi-stranded loops, when driven by transverse waves",
  "authors": [
    "N. Magyar",
    "T. Van Doorsselaere"
  ],
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "In recent years, omni-present transverse waves have been observed in all layers of the solar atmosphere. Coronal loops are often modeled as a collection of individual strands, in order to explain their thermal behaviour and appearance. We perform 3D ideal MHD simulations to study the effect of a continuous small amplitude transverse footpoint driving on the internal structure of a coronal loop composed of strands. The output is also converted to synthetic images, corresponding to the AIA 171 A and 193 A passbands, using FoMo. We show that the multi-stranded loop ceases to exist in the traditional sense of the word, because the plasma is efficiently mixed perpendicularly to the magnetic field, with the Kelvin-Helmholtz instability acting as the main mechanism. The final product of our simulation is mixed loop with density structures on a large range of scales, resembling a power-law. Thus, multi-stranded loops are unstable to driving by transverse waves, and this raises a strong doubt on the usability and applicability of coronal loop models consisting of independent strands.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2016-04-14T08:54:50.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "transverse waves",
      "multi-stranded loop",
      "amplitude transverse footpoint driving",
      "coronal loop",
      "instability"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2016arXiv160404078M"
    }
  }
}