Re: Second Gravitational Wave event confirmed!

From	willner@cfa.harvard.edu (Steve Willner)
Newsgroups	sci.physics, sci.astro
Subject	Re: Second Gravitational Wave event confirmed!
Date	2016-06-30 18:40 +0000
Organization	Harvard-Smithsonian Center for Astrophysics
Message-ID	<nl3p3j$evp$1@dont-email.me> (permalink)
References	<bcSdnZxR3qj2nP7KnZ2dnUU7-LHNnZ2d@giganews.com> <nk1pmg$l8h$2@dont-email.me> <0oWdnWV6evFfBPnKnZ2dnUU7-UXNnZ2d@giganews.com>

Cross-posted to 2 groups.

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In article <0oWdnWV6evFfBPnKnZ2dnUU7-UXNnZ2d@giganews.com>,
 Yousuf Khan <bbbl67@spammenot.yahoo.com> writes:
> Great, now I wonder how much of their energy was turned into gravity 
> waves?

I'm coming back to this late, but the answer is in the paper draft at
https://dcc.ligo.org/LIGO-P1600088/main/public

Table 1 shows total initial mass 21.8 Msun and final mass 20.8 Msun,
but both have uncertainties of more than 1 Msun.  However, the
radiated energy is given as 1.0(+0.1/-0.2) Msun, so it seems
reasonably well determined.

By the way, the correct term for what LIGO is looking for is
"gravitational waves."  Ordinary water waves on a lake or ocean are
examples of "gravity waves."  That name distinguishes them from
"pressure waves" such as sound.

-- 
Help keep our newsgroup healthy; please don't feed the trolls.
Steve Willner            Phone 617-495-7123     swillner@cfa.harvard.edu
Cambridge, MA 02138 USA

Thread

Second Gravitational Wave event confirmed! Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2016-06-16 15:43 -0400
  Re: Second Gravitational Wave event confirmed! willner@cfa.harvard.edu (Steve Willner) - 2016-06-17 21:22 +0000
    Re: Second Gravitational Wave event confirmed! Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-06-18 00:01 +0200
      Re: Second Gravitational Wave event confirmed! "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-18 09:05 -0700
      Re: Second Gravitational Wave event confirmed! Dr J R Stockton <reply1600@merlyn.demon.co.uk.invalid> - 2016-06-18 14:49 +0100
        Re: Second Gravitational Wave event confirmed! Poutnik <poutnik4nntp@gmail.com> - 2016-06-19 07:47 +0200
    Re: Second Gravitational Wave event confirmed! Yousuf Khan <bbbl67@spammenot.yahoo.com> - 2016-06-17 20:45 -0400
      Re: Second Gravitational Wave event confirmed! Thomas 'PointedEars' Lahn <PointedEars@web.de> - 2016-06-18 05:12 +0200
        Re: Second Gravitational Wave event confirmed! moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-18 04:59 +0000
      Re: Second Gravitational Wave event confirmed! willner@cfa.harvard.edu (Steve Willner) - 2016-06-30 18:40 +0000
  Re: Second Gravitational Wave event confirmed! "Y.Porat" <y.y.porat@gmail.com> - 2016-06-17 23:10 -0700
    Re: Second Gravitational Wave event confirmed! john <johnsefton288@gmail.com> - 2016-06-18 06:44 -0700
      Re: Second Gravitational Wave event confirmed! Poutnik <poutnik4nntp@gmail.com> - 2016-06-18 15:59 +0200
      Re: Second Gravitational Wave event confirmed! moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-18 15:05 +0000
        Re: Second Gravitational Wave event confirmed! john <johnsefton288@gmail.com> - 2016-06-18 08:46 -0700
          Re: Second Gravitational Wave event confirmed! moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-18 16:04 +0000
            Re: Second Gravitational Wave event confirmed! "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-06-18 12:09 -0700
      Re: Second Gravitational Wave event confirmed! HVAC <mr.hvac@gmail.com> - 2016-06-18 08:44 -0700
        Re: Second Gravitational Wave event confirmed! john <johnsefton288@gmail.com> - 2016-06-18 08:50 -0700
        Re: Second Gravitational Wave event confirmed! moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-18 15:52 +0000
          Re: Second Gravitational Wave event confirmed! john <johnsefton288@gmail.com> - 2016-06-18 09:01 -0700
            Re: Second Gravitational Wave event confirmed! moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-18 16:06 +0000
              Re: Second Gravitational Wave event confirmed! john <johnsefton288@gmail.com> - 2016-06-18 09:17 -0700
                Re: Second Gravitational Wave event confirmed! moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-18 19:20 +0000
                Re: Second Gravitational Wave event confirmed! john <johnsefton288@gmail.com> - 2016-06-18 12:27 -0700
                Re: Second Gravitational Wave event confirmed! moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-18 19:38 +0000
                Re: Second Gravitational Wave event confirmed! john <johnsefton288@gmail.com> - 2016-06-18 15:58 -0700
                Re: Second Gravitational Wave event confirmed! moroney@world.std.spaamtrap.com (Michael Moroney) - 2016-06-18 23:37 +0000

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