Search Menu
Photonics Media Photonics Buyers' Guide Photonics EDU Photonics Spectra BioPhotonics EuroPhotonics Industrial Photonics Photonics Showcase Photonics ProdSpec Photonics Handbook
More News
Email Facebook Twitter Google+ LinkedIn Comments

Interpreting Images from Saturn

Sep 2008
Way beyond Saturn’s main rings lies the narrow, braided multistrand F ring, discovered by Pioneer 11 about 30 years ago. This unique region changes its appearance on a variety of timescales, presenting an interesting puzzle. Now astronomers from the University of London and from Université Paris have analysed images from the Cassini Imaging Science Subsystem to show that small satellites embedded in the core of the ring are continually interacting and colliding with each other. The subsystem includes narrow- and wide-angle cameras covering the wavelength range from 2000 Å to 1.1 μm.

Saturn’s F ring has multiple structures and changes its appearance over hours and years. Courtesy of NASA/JPL/Space Science Institute.

The scientists are studying the streamers and fans that appear in the F ring and are using numerical simulation to explore the physical explanations. The moon Prometheus passes a particular point in the F ring every 67.65 days, and its gravitational attraction produces streamers in the ring. But localized disturbances persist long after the moon has passed, and numerical modelling suggests that they could be caused by perturbation of embedded moonlets, which then continue to jostle and to create additional jets of material from colliding objects.

(Nature, 5 June 2008, pp. 739-744)

The light-conducting portion of an optical fiber, defined by the region of high refractive index.
astronomerscoreEuropeEUROResearchF ringResearch & Technology

Terms & Conditions Privacy Policy About Us Contact Us
back to top
Facebook Twitter Instagram LinkedIn YouTube RSS
©2018 Photonics Media, 100 West St., Pittsfield, MA, 01201 USA,

Photonics Media, Laurin Publishing
x Subscribe to EuroPhotonics magazine - FREE!
We use cookies to improve user experience and analyze our website traffic as stated in our Privacy Policy. By using this website, you agree to the use of cookies unless you have disabled them.