{
  "id": "1710.07559",
  "version": "v1",
  "published": "2017-10-20T14:55:37.000Z",
  "updated": "2017-10-20T14:55:37.000Z",
  "title": "On the generation of solar spicules and Alfvénic waves",
  "authors": [
    "Juan Martínez-Sykora",
    "Bart De Pontieu",
    "Viggo H. Hansteen",
    "Luc Rouppe van der Voort",
    "Mats Carlsson",
    "Tiago M. D. Pereira"
  ],
  "comment": "28 pages, 10 figures",
  "journal": "2017 Science 356 1269",
  "doi": "10.1126/science.aah5412",
  "categories": [
    "astro-ph.SR"
  ],
  "abstract": "In the lower solar atmosphere, the chromosphere is permeated by jets known as spicules, in which plasma is propelled at speeds of 50 to 150 kilometers per second into the corona. The origin of the spicules is poorly understood, although they are expected to play a role in heating the million-degree corona and are associated with Alfv\\'enic waves that help drive the solar wind. We compare magnetohydrodynamic simulations of spicules with observations from the Interface Region Imaging Spectrograph and the Swedish 1-m Solar Telescope. Spicules are shown to occur when magnetic tension is amplified and transported upward through interactions between ions and neutrals or ambipolar diffusion. The tension is impulsively released to drive flows, heat plasma (through ambipolar diffusion), and generate Alfv\\'enic waves.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-10-20T14:55:37.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "solar spicules",
      "alfvénic waves",
      "generation",
      "ambipolar diffusion",
      "lower solar atmosphere"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "AAAS"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 28,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}