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Groups > sci.physics.relativity > #378535

Where did the energy for GW150914 come from?

Newsgroups sci.physics.relativity
Date 2016-03-10 19:41 -0800
Message-ID <ab105e08-e76a-4599-9002-eaa0753cd358@googlegroups.com> (permalink)
Subject Where did the energy for GW150914 come from?
From crisd <crisdunbar@gmail.com>

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Curious amateur here ...

What am I getting wrong?

According to Wikipedia (!), the event of last year was the result of a binary black hole system with a combined initial mass of ~65 solar masses and a resulting black hole of ~62 solar masses, with the remainder being radiated away as gravitational waves.

As I understand it, gravitational waves result from a classical interpretation of GR. So how does mass-energy "escape" from the binary black hole system? Does this not imply that energy was extracted from a black hole? Or was there somehow energy in the "system" (enormous gravitational potential energy, in a hand-wavy way) and it was this energy that was radiated away?

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Thread

Where did the energy for GW150914 come from? crisd <crisdunbar@gmail.com> - 2016-03-10 19:41 -0800
  Re: Where did the energy for GW150914 come from? Tom Roberts <tjroberts137@sbcglobal.net> - 2016-03-11 10:14 -0600
    Re: Where did the energy for GW150914 come from? "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2016-03-11 08:52 -0800
    Re: Where did the energy for GW150914 come from? Yeriychow Patroklos <yeriypat@kambuneta.com> - 2016-03-12 10:15 +0000
      Re: Where did the energy for GW150914 come from? Alan Folmsbee <omnilobe@gmail.com> - 2016-03-12 10:00 -0800
        Re: Where did the energy for GW150914 come from? Jorge Escalante <jorgeesca@hotmailcom.com> - 2016-03-12 18:19 +0000
          Re: Where did the energy for GW150914 come from? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-13 00:35 +0100
        Re: Where did the energy for GW150914 come from? "Ross A. Finlayson" <ross.finlayson@gmail.com> - 2016-03-14 20:19 -0700
          Re: Where did the energy for GW150914 come from? David Fuller <fuller.david@hotmail.com> - 2016-03-15 12:48 -0700
            Re: Where did the energy for GW150914 come from? David Fuller <fuller.david@hotmail.com> - 2016-03-15 14:49 -0700
      Re: Where did the energy for GW150914 come from? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-13 00:32 +0100
        Re: Where did the energy for GW150914 come from? Iephthae Sparrow <yvosp@gideoncloud.net> - 2016-03-13 13:40 +0000
          Re: Where did the energy for GW150914 come from? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-03-13 23:20 +0000
          Re: Where did the energy for GW150914 come from? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-14 21:47 +0100
            Re: Where did the energy for GW150914 come from? Comhghall Parthalan <compart@draggonpart.org> - 2016-03-14 21:19 +0000
              Re: Where did the energy for GW150914 come from? pnalsing@gmail.com - 2016-03-14 18:01 -0700
              Re: Where did the energy for GW150914 come from? Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-03-15 15:03 +0100
                Re: Where did the energy for GW150914 come from? moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-03-15 15:31 +0000
                Re: Where did the energy for GW150914 come from? Comhghall Parthalan <compart@draggonpart.org> - 2016-03-15 18:17 +0000
  Where did the energy for GW150914 come from? David Fuller <fuller.david@hotmail.com> - 2016-03-11 11:42 -0800
    Where did the energy for GW150914 come from? David Fuller <fuller.david@hotmail.com> - 2016-03-11 11:52 -0800
    Re: Where did the energy for GW150914 come from? David Fuller <fuller.david@hotmail.com> - 2016-03-11 14:41 -0800
      Re: Where did the energy for GW150914 come from? David Fuller <fuller.david@hotmail.com> - 2016-03-13 11:18 -0700
    Re: Where did the energy for GW150914 come from? David Fuller <fuller.david@hotmail.com> - 2016-03-13 13:15 -0700

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