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DTSTART;TZID=US/Eastern:20160128T153000
DTEND;TZID=US/Eastern:20160128T163000
SUMMARY:Hamilton-Jacobi Trajectories of Comets Kohoutek and ISON: A Novel Approach to Celestial Dynamics -- Prof. M. Howard Lee
DESCRIPTION:Departmental Colloquium. There is a class of comets which visit the solar system once and never return. These events are rare, occurring but once or twice a century. Kohoutek observed in 1973 and ISON in 2012 belong to this class. These remarkable comets are physically characterized by the eccentricity e very nearly 1. Thus their trajectories would seem of special interest to celestial dynamics. By Hamilton-Jacobi theory we have obtained a general solution for the trajectory in a two-body solar system. If e1 limit on the general solution. By a "horizon singularity" one can determine how they disappear from the solar system. By this singularity one can identify this class of comets as they approach the solar system.
LOCATION:Physics Auditorium (Room 202)
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