logging in or signing up ShowalterPPT Marco1 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 22 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: January 11, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Slide2: Jupiter (Galileo) Saturn (Cassini) Uranus (Hubble) Neptune (Voyager)Everything You Need to Know about Ring Dynamics: Everything You Need to Know about Ring Dynamics Newton: Force = Mass x Acceleration Law of Gravity Collisions Light-scattering PhysicsSlide5: Main ring Dark side = High “phase angle”: emphasizes tiny dust grainsSlide6: “Halo” “Gossamer ring” discoverySlide7: Two “Gossamer” rings Dusty rings must be sustained by source bodies (seen or unseen)Slide9: A B C Encke Gap Cassini Division D F Lit side = Low “phase angle”: emphasizes large bodiesSlide10: E G Enceladus Earth! Unique high-phase view! FSlide11: “Geysers” on Enceladus = the source of the E ringCassini On-line Resources: Cassini On-line Resources Cassini Main Site http://saturn.jpl.nasa.gov/ The latest raw images (cool!) http://saturn.jpl.nasa.gov/multimedia/images/raw/index.cfm Imaging Team Web Site http://ciclops.org/Slide13: The “Opposition Surge” on Saturn’s rings. This appears exactly opposite to the direction to the Sun, at phase angle 0°. The size of the surge is a measure of how rough the particles are.Slide15: gamma eta lambda epsilon beta alpha 6, 5, 4 delta The main rings of Uranus Imaged by Voyager 2 Low phase = big particlesSlide16: The rings of Uranus at high phase > dust belts!Uranus in HST: Uranus in HSTLong exposures reveal rings: Long exposures reveal ringsOverlaying frames shows moons: Overlaying frames shows moonsProcessing shows new rings!: Processing shows new rings! Mab & the mu ring nu ringSlide23: Liberté Fraternité Egalité Courage Leverrier ring Adams ringNeptune’s Changing Arcs: Neptune’s Changing Arcs The arcs can now be detected by Hubble and ground-based telescopes. Since 1989, the leading arcs have advanced forward and faded. Gravity effects of the nearby moon Galatea help to confine the arcs …but the model is in trouble!Fun with Rings (1): Fun with Rings (1) Vertical RipplesSlide27: Enhanced Galileo image of Jupiter’s main ring A “wireframe” diagram showing vertical ripples in a ringSlide28: D ring ripples that have been winding up since 1984!Fun with Rings (2): Fun with Rings (2) Satellite “Wakes”Slide30: Wavy edge of Encke Gap suggests an embedded moon. Color enhancement reveals “spiral” structure. Perturbed central ringletSlide31: The discovery of Pan in a sequence of five Voyager imagesSlide32: A spectacular view of the Pan wake from Cassini direction to PanSlide33: Pan Imaged at Fine Resolution by CassiniSlide34: The Discovery of Daphnis in the Keeler Gap: The wake is highly distortedFun with Rings (3): Fun with Rings (3) Saturn’s Pathological F RingSlide36: Ophelia Cordelia Two moons “shepherd” the epsilon ring of UranusSlide37: Pandora Prometheus Distant Voyager approach image: Is the F ring shepherded too?Slide38: Saturn’s Famous “Braided” Ring!Slide39: A Selection of Cassini ImagesSlide40: Prometheus produces a “wake” pattern just like PanSlide41: The aftermath of a ring impact?Slide42: A recent, new feature 200 km inward from the central ring2007: A Good Year ahead for Ring Science…: 2007: A Good Year ahead for Ring Science…Cassini Extended Mission July 2008–June 2010: Cassini Extended Mission July 2008–June 2010 Sample Tour Science planning is proceeding. Note that this period includes the equinox on August 11, 2009!New Horizons at Jupiter February 28, 2007: New Horizons at Jupiter February 28, 2007Slide46: The first images of Jupiter from New Horizons Range is 1 AUSlide47: Sample planned images during the New Horizons flybySlide48: 2003 2005 2007: Equinox! Edge-on viewing: the main rings go dark search for “shepherds” see the dust rings betterSlide50: Remember what Amalthea and Thebe do at Jupiter!Slide51: December, 2007: the best ring viewing geometry till 2022! You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
ShowalterPPT Marco1 Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 22 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: January 11, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Slide2: Jupiter (Galileo) Saturn (Cassini) Uranus (Hubble) Neptune (Voyager)Everything You Need to Know about Ring Dynamics: Everything You Need to Know about Ring Dynamics Newton: Force = Mass x Acceleration Law of Gravity Collisions Light-scattering PhysicsSlide5: Main ring Dark side = High “phase angle”: emphasizes tiny dust grainsSlide6: “Halo” “Gossamer ring” discoverySlide7: Two “Gossamer” rings Dusty rings must be sustained by source bodies (seen or unseen)Slide9: A B C Encke Gap Cassini Division D F Lit side = Low “phase angle”: emphasizes large bodiesSlide10: E G Enceladus Earth! Unique high-phase view! FSlide11: “Geysers” on Enceladus = the source of the E ringCassini On-line Resources: Cassini On-line Resources Cassini Main Site http://saturn.jpl.nasa.gov/ The latest raw images (cool!) http://saturn.jpl.nasa.gov/multimedia/images/raw/index.cfm Imaging Team Web Site http://ciclops.org/Slide13: The “Opposition Surge” on Saturn’s rings. This appears exactly opposite to the direction to the Sun, at phase angle 0°. The size of the surge is a measure of how rough the particles are.Slide15: gamma eta lambda epsilon beta alpha 6, 5, 4 delta The main rings of Uranus Imaged by Voyager 2 Low phase = big particlesSlide16: The rings of Uranus at high phase > dust belts!Uranus in HST: Uranus in HSTLong exposures reveal rings: Long exposures reveal ringsOverlaying frames shows moons: Overlaying frames shows moonsProcessing shows new rings!: Processing shows new rings! Mab & the mu ring nu ringSlide23: Liberté Fraternité Egalité Courage Leverrier ring Adams ringNeptune’s Changing Arcs: Neptune’s Changing Arcs The arcs can now be detected by Hubble and ground-based telescopes. Since 1989, the leading arcs have advanced forward and faded. Gravity effects of the nearby moon Galatea help to confine the arcs …but the model is in trouble!Fun with Rings (1): Fun with Rings (1) Vertical RipplesSlide27: Enhanced Galileo image of Jupiter’s main ring A “wireframe” diagram showing vertical ripples in a ringSlide28: D ring ripples that have been winding up since 1984!Fun with Rings (2): Fun with Rings (2) Satellite “Wakes”Slide30: Wavy edge of Encke Gap suggests an embedded moon. Color enhancement reveals “spiral” structure. Perturbed central ringletSlide31: The discovery of Pan in a sequence of five Voyager imagesSlide32: A spectacular view of the Pan wake from Cassini direction to PanSlide33: Pan Imaged at Fine Resolution by CassiniSlide34: The Discovery of Daphnis in the Keeler Gap: The wake is highly distortedFun with Rings (3): Fun with Rings (3) Saturn’s Pathological F RingSlide36: Ophelia Cordelia Two moons “shepherd” the epsilon ring of UranusSlide37: Pandora Prometheus Distant Voyager approach image: Is the F ring shepherded too?Slide38: Saturn’s Famous “Braided” Ring!Slide39: A Selection of Cassini ImagesSlide40: Prometheus produces a “wake” pattern just like PanSlide41: The aftermath of a ring impact?Slide42: A recent, new feature 200 km inward from the central ring2007: A Good Year ahead for Ring Science…: 2007: A Good Year ahead for Ring Science…Cassini Extended Mission July 2008–June 2010: Cassini Extended Mission July 2008–June 2010 Sample Tour Science planning is proceeding. Note that this period includes the equinox on August 11, 2009!New Horizons at Jupiter February 28, 2007: New Horizons at Jupiter February 28, 2007Slide46: The first images of Jupiter from New Horizons Range is 1 AUSlide47: Sample planned images during the New Horizons flybySlide48: 2003 2005 2007: Equinox! Edge-on viewing: the main rings go dark search for “shepherds” see the dust rings betterSlide50: Remember what Amalthea and Thebe do at Jupiter!Slide51: December, 2007: the best ring viewing geometry till 2022!