Article View: sci.physics
Article #1059Re: The Speed of Gravity Waves
From: Jonathan M. Gilligan
Date: Fri, 10 Apr 1992 22:33
Date: Fri, 10 Apr 1992 22:33
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In article <22642@dog.ee.lbl.gov> sichase@csa2.lbl.gov writes: >There recently was a discussion of gravity waves and I asserted that >the speed of such waves must necessarily be Cem, the speed of electromagnetic >waves, by virtue of the masslessness of the graviton. I have since learned >that my answer was not complete. Here is as better explanation: (discussion of Brans-Diske models omitted) >A definitive test would be produced by LIGO in coincidence with optical >measurements of some catastrophic event which generates enough gravitational >radiation to be detected. Then the "time of flight" of both gravitons and >photons from the source to the Earth could be measured, and strict direct >limits could be set on Cgw. I would think that some information could be gleaned from the spindown of pulsars due to gravitational radiation. But I'm ignorant of such things. Can someone who knows comment? ---Jon
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Path: arc1-ca.pugleaf.net!sparky!news.UU.NET!dove!gilligan From: gilligan@bldrdoc.gov (Jonathan M. Gilligan) Newsgroups: sci.physics,alt.sci.physics.new-theories Subject: Re: The Speed of Gravity Waves Message-ID: <2736@dove.nist.gov> Date: 10 Apr 92 22:33:23 GMT References: <22642@dog.ee.lbl.gov> Sender: news@dove.nist.gov Followup-To: sci.physics Organization: National Institute of Standards and Technology Lines: 19