UCL  IRIS
Institutional Research Information Service
UCL Logo
Please report any queries concerning the funding data shown on the profile page to:

http://www.ucl.ac.uk/finance/secure/research/post_award
Please report any queries concerning the student data shown on the profile page to:

Email: portico-services@ucl.ac.uk

Help Desk: http://www.ucl.ac.uk/ras/portico/helpdesk
Publication Detail
LOCATION AND MAGNETOSPHERIC MAPPING OF SATURN'S MID-LATITUDE INFRARED AURORAL OVAL
  • Publication Type:
    Journal article
  • Publication Sub Type:
    Article
  • Authors:
    Stallard T, Melin H, Cowley SWH, Miller S, Lystrup MB
  • Publisher:
    IOP PUBLISHING LTD
  • Publication date:
    10/10/2010
  • Pagination:
    L85, L89
  • Journal:
    ASTROPHYS J LETT
  • Volume:
    722
  • Issue:
    1
  • Print ISSN:
    2041-8205
  • Language:
    EN
  • Keywords:
    planets and satellites: aurorae, planets and satellites: individual (Saturn), planets and satellites: magnetic fields, IONOSPHERE
  • Addresses:
    Stallard, T
    Univ Leicester
    Dept Phys & Astron
    Leicester
    LE1 7RH
    Leics
    England
Abstract
Previous observations of Saturn's infrared aurorae have shown that a mid-latitude aurora exists significantly equatorward of the main auroral oval. Here, we present new results using data from four separate observing runs in 1998, 2003, 2008, and 2010. When combined, these provide a view of the mid-latitude aurora under a considerable range of viewing conditions, allowing the first calculation of the latitudinal position of this aurora to be made. This has shown that the mid-latitude aurora is located at the magnetic footprint of the region within the magnetosphere where the initial breakdown in corotation occurs, between 3R(S) and the orbit of Enceladus (similar to 3.95R(S)). We also confirm that this aurora is a continuous stable feature over a period of more than a decade and that an oval morphology is likely. When combined, these results indicate that the mid-latitude auroral oval is formed by currents driven by the breakdown process within the magnetosphere, in turn caused by mass loading from the torus of Enceladus, analogous with the volcanic moon Io's dominant role in the formation of Jupiter's main auroral oval.
Publication data is maintained in RPS. Visit https://rps.ucl.ac.uk
 More search options
UCL Authors
Dept of Science & Technology Studies
University College London - Gower Street - London - WC1E 6BT Tel:+44 (0)20 7679 2000

© UCL 1999–2011

Search by