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Re: Second Gravitational Wave event confirmed!

Cross-posted to 2 groups.

Followups directed to: sci.astro

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Steve Willner wrote:

> In article <bcSdnZxR3qj2nP7KnZ2dnUU7-LHNnZ2d@giganews.com>,
>  Yousuf Khan <bbbl67@spammenot.yahoo.com> writes:

Attribution line, not attribution novel.

>>  The first event seemed to happen quicker, while the second one
>> seems more drawn out. I wonder if this tells us something about the
>> masses of the two new blackholes? Specifically will the fact that
>> it happened much slower for the second set of black holes, would
>> that mean that they were smaller black holes than the first set
>> from the September detection/February announcement?
> 
> Yes.  See item 2 in the press release at
> https://www.ligo.caltech.edu/news/ligo20160615

IIUC, the event was that two black holes merged.  If that is so, it cannot 
“happen quicker” or be “drawn out” or “happen slower”.  The article says 
that the *signal* was *detected* earlier which would be a different fact.

Second, why is it a valid conclusion that because the bodies’ orbital speeds 
were faster they *have to be* smaller i.e. for black holes that they have to 
have smaller masses?  (I realize that was so in this case.)

F'up2 sci.astro

-- 
PointedEars

Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.

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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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