|The Australia Telescope National Facility Colloquium|
|15:30-16:30 Wed 08 Nov 2006|
ATNF Marsfield Lecture Theatre
Professor Andrea Lommen
(Franklin & Marshall College)
New Limits on Gravitational Radiation Using PSR B1855+09 - Prof Andrea Lommen
Gravitational wave astronomy is poised to revolutionize the field of Astrophysics. I'll provide a brief introduction to gravitational waves and explain the relationship between the various detectors (LIGO, LISA, pulsar timing arrays, etc) and their respective target sources. I'll demonstrate how we use a 20-year data set from the Arecibo Observatory on PSR B1855+09 to place new limits on the energy density of gravitational radiation. This and other results from pulsar timing are beginning to constrain the merger-rate of galaxies in the early universe.
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