1 / 24

The Io Plasma Torus

The Io Plasma Torus. Volcanoes, Atmospheres, and Magnetospheres, Oh My! Dr. Jeff Morgenthaler. Outline. Scientific background Galilean satellites Jovian magnetosphere Io plasma torus (IPT) Observing the IPT Relating the IPT to other facets of the Jovian system

varuna
Download Presentation

The Io Plasma Torus

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. The Io Plasma Torus Volcanoes, Atmospheres, and Magnetospheres, Oh My! Dr. Jeff Morgenthaler

  2. Outline • Scientific background • Galilean satellites • Jovian magnetosphere • Io plasma torus (IPT) • Observing the IPT • Relating the IPT to other facets of the Jovian system • Time allowing: other fuzzy blobs I know and love • Comets • The heliosphere

  3. Scientific background: Galilean Satellites • Jupiter is one of the “original” 5 planets • Planet is Greek for “wanderer” • Mercury, Venus, Mars, Jupiter, Saturn • First telescopic observation by Galileo in 1610 • Showed mini Copernican system • Four satellites Images: Universe, Kaufmann & Freedman

  4. Io Europa Callisto Ganymede Galilean Satellite Family Portrait Image source: NASA/JPL

  5. Image source: NASA/JPL Tidal heating of Io

  6. Pillan Patera Prometheus APOD 2007 February 11, Galileo data from 1997 June 28 Io is the most volcanic body in the solar system

  7. Source Scientific background: Jovian Magnetosphere • Magnetic field: approximated by offset, tilted dipole

  8. NASA/JPL Scientific background: Jovian Magnetosphere • Magnetosphere: where a planet’s magnetic field has more influence than the solar wind on plasma • ~50 Rj upwind, ~100 Rj downwind

  9. NASA/JPL Io Plasma Torus

  10. Neutral density filter Narrow-band filter (e.g. S II]) N.M. Schneider and J.T. Trauger (1995) Observing the Io Plasma Torus

  11. Observing the Io Plasma Torus: McMath-Pierce Solar Telescope Data

  12. McMath-Pierce Solar Telescope Io Torus Imager Neutral density filter Narrow-band filter Guider CCD

  13. McMath-Pierce Solar Telescope Facility (works at night too)

  14. Relating the IPT to other facets of the Jovian system STIS observations of Io Jovian System – Io Plasma Torus

  15. Io [OI] line Example spectrum: 2002 Jan 26

  16. N.M. Schneider and J.T. Trauger (1995) Io Plasma Torus Summary • Torus imager for portable telescopes has been successfully deployed (Nozawa et al. 2004) • Need to verify sky is dark enough above Holland, MI

  17. Comet Basics

  18. Anatomy of a comet Sun (106 km) Ion Tail Dust Tail Head Dust (1 m)

  19. CN coma: Studying comets: remote sensing

  20. Solar wind Heliosphere Local interstellar medium (solar wind ion) (cometary or interplanetary hydrogen) X-ray emission from comets and the solar system

  21. Diffuse X-ray Spectrometer What used to be thought of as interstellar X-ray emission may be entirely heliospheric

More Related