A look at the large end of the jovian ring particle size distribution

Details A look at the large end of the jovian ring particle size distribution A look at the large end of the jovian ring particle size distribution

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3712w&link_type=abstract

Spitzer Proposal ID #3712

Computer Science

Scientific paper

No spectra of the thermal emission from Jupiter's ring are available to date. Spectra in the thermal infrared are crucial for interpreting numerous observations of the rings in scattered sunlight, which is primarily sensitive to particles near 1 micron in size. Only with thermal infrared ring data can we constrain fundamental properties such as the size distribution, composition, albedo, and emissivity of ring particles. The most sentitive published search for thermal emission from the rings comes from Voyager IRIS, which was only able to set upper limits. Spitzer's IRS will be able to detect any thermal emission between these upper limits and the zodiacal background. These measurements cannot be made from the ground due to strong atmospheric absorption and the faintness of the ring signal. Since thermal IR is more sensitive to the larger particles that are hidden in the reflected sunlight regime, Spitzer gives us a rare chance to study possible parent bodies of the dusty ring particles.

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