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11:20
Investigation of Early Plasma Evolution Induced by Ultrashort Laser Pulses
Published on: July 2, 2012
Imaging photopolarimeter on pioneer saturn
Science (New York, N.Y.)
|January 25, 1980
Summary
Pioneer 11 discovered Saturn's F ring and a new satellite. Observations refined ring structure, particle size estimates, and Saturn's dimensions, impacting planetary science.
Area of Science:
- Planetary Science
- Astronomy
- Astrophysics
Background:
- Pioneer 11's imaging photopolarimeter provided detailed observations of Saturn.
- Previous knowledge of Saturn's rings and atmosphere was limited.
Purpose of the Study:
- To conduct imaging, photometry, and polarimetry of Saturn, its rings, and Titan.
- To discover new features and refine existing data on Saturn's system.
Main Methods:
- Utilized an imaging photopolarimeter with a 2.5-cm telescope aboard Pioneer 11.
- Conducted continuous observations for two weeks in August and September 1979.
Main Results:
- Discovered a new ring (F ring) and a satellite (1979 S 1).
- Redefined nomenclature for ring divisions and gaps, measured Encke gap width.
- Estimated mean particle size in rings (~15 meters) and Saturn's dimensions.
- Analyzed Saturn's atmospheric structure using polarimetric data.
Conclusions:
- The F ring's existence and position were confirmed.
- Saturn's ring system exhibits more detail than previously known.
- Pioneer 11 data provided crucial insights into Saturn's atmosphere and ring particle properties.
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