Can you Detect an Earth by its Ring?

Details Can you Detect an Earth by its Ring? Can you Detect an Earth by its Ring?

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005nrdd.conf...18k&link_type=abstract

Proceedings of the Miniworkshop on Nearby Resolved Debris Disks. October 19-20, 2005. Space Telescope Science Institute, Baltimo

Physics

Scientific paper

The Earth creates a ~2% perturbation in the local surface brightness of the zodiacal cloud by trapping dust in mean motion resonances; this effect would be far too subtle to recognize in an extrasolar debris disk.However, numerical models predict that under some circumstances, the Earth can become much more efficient at trapping and scattering particles, creating sharp density contrasts that could be detected from afar. We discuss the range of circumstances that would make a low-mass planet detectable in an optically-thin debris disk and consider the structures observed in nearby resolved disks.

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