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Title: On the Unreasonable Effectiveness of post-Newtonian Theory in Gravitational-Wave Physics

The first indirect detection of gravitational waves involved a binary system of neutron stars.  In the future, the first direct detection may also involve binary systems -- inspiralling and merging bimore »nary neutron stars or black holes. This means that it is essential to understand in full detail the two-body system in general relativity, a notoriously difficult problem with a long history. Post-Newtonian approximation methods are thought to work only under slow motion and weak field conditions, while numerical solutions of Einstein's equations are thought to be limited to the final merger phase.  Recent results have shown that post-Newtonian approximations seem to remain unreasonably valid well into the relativistic regime, while advances in numerical relativity now permit solutions for numerous orbits before merger.  It is now possible to envision linking post-Newtonian theory and numerical relativity to obtain a complete "solution" of the general relativistic two-body problem.  These solutions will play a central role in detecting and understanding gravitational wave signals received by interferometric observatories on Earth and in space.« less
Title: On the Unreasonable Effectiveness of post-Newtonian Theory in Gravitational-Wave Physics
Authors:
Publication Date: 2008-01-09
OSTI Identifier: 987749
Other Number(s): Other: rnh
Resource Type: Multimedia
Specific Type: Multimedia Presentation
Sponsoring Org: USDOE
Subject: 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS ; WAVE PHYSICS ; POST-NEWTONIAN THEORY ; NUMERICAL RELATIVITY
Publisher: Fermilab Colloquia Online: 2000 to the Present Videos of Science Lecture and Presentations from the Colloquium Program at Fermi National Laboratory
Country of Publication: United States
Language: English
Run Time: 1:07:20
System Entry Date: 2017-12-22