Aurora (astronomy)

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Pictur o the aurora australis

An aurora (plural: aurorae or auroras; frae the Laitin wird aurora, "sunrise" or the Roman goddess o dawn) is a naitural licht display in the sky pairticularly in the heich latitude (Arctic an Antarctic) regions, caused bi the collision o energetic charged pairticles wi atoms in the heich altitude atmosphere (thermosphere). The charged pairticles oreeginate in the magnetosphere an solar wind an, on Yird, are directit bi the Yird's magnetic field intae the atmosphere. Maist aurorae occur in a band kent as the auroral zone,[1][2] which is typically in 3° tae 6° latitudinal extent o geographical poles, or equivalently, 10° tae 20° latitudinal extent o geomagnetic poles, an at aw local times or longitudes. During a geomagnetic storm, the auroral zone expands tae lawer latitudes.

References[eedit | eedit soorce]

  1. Feldstein, Y. I. (1963). "Some problems concerning the morphology of auroras and magnetic disturbances at high latitudes". Geomagnetism and Aeronomy 3: 183–192. Bibcode:1963Ge&Ae...3..183F. 
  2. Feldstein, Y. I. (1986). "A Quarter Century with the Auroral Oval". EOS 67 (40): 761. Bibcode:1986EOSTr..67..761F. doi:10.1029/EO067i040p00761-02.