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Groups > sci.physics > #585377
| From | Thomas 'PointedEars' Lahn <PointedEars@web.de> |
|---|---|
| Newsgroups | sci.physics, sci.astro |
| Subject | Re: Second Gravitational Wave event confirmed! |
| Followup-To | sci.physics |
| Date | 2016-06-18 05:12 +0200 |
| Organization | PointedEars Software (PES) |
| Message-ID | <2033074.OuhAW5dBSK@PointedEars.de> (permalink) |
| References | <bcSdnZxR3qj2nP7KnZ2dnUU7-LHNnZ2d@giganews.com> <nk1pmg$l8h$2@dont-email.me> <0oWdnWV6evFfBPnKnZ2dnUU7-UXNnZ2d@giganews.com> |
Cross-posted to 2 groups.
Followups directed to: sci.physics
Yousuf Khan <bbbl67@spammenot.yahoo.com> wrote:
^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sammy’s got a new pseudonym but no e-mail address?
> […] I wonder how much of their energy was turned into gravity
^^^^^^^
> waves? In the first event, a 29 and a 36 solar mass black holes turned
^^^^^
> into 5 solar masses of gravity waves, and 60 solar mass of newly formed
^^^^^^^^^^^^^ ^^
> black hole.
“In the source frame, the initial black hole masses are 36⁺⁵₋₄ M⊙ and
29⁺⁴₋₄ M⊙, and the final black hole mass is /62⁺⁴₋₄ M⊙/, with
/3.0^{+0.5}_{−0.5} M⊙ c²/ radiated in /gravitational/ waves [0].” [1]
(emphasis and reference mine)
> Going proportionally, the secondary black holes are 8 & 14, so I would
> guess that would result in 2 solar masses of gravity waves, and 20 solar
> masses of new black hole.
Not quite. If you read the paper at PRL (which you can for free again,
thank you LSC and VC), you will realize that naive arithmetics does not work
because mass–energy is only one component of a body’s energy:
“The inferred source-frame initial black hole masses are
14.2^{+8.3}_{−3.7} M⊙ and 7.5^{+2.3}_{−2.3} M⊙, and the final black hole
mass is 20.8^{+6.1}_{−1.7} M⊙.” [2]
F'up2 sci.physics
___________
[0] <http://en.wikipedia.org/wiki/Gravity_wave>
vs. <http://en.wikipedia.org/wiki/Gravitational_wave>
[1] B. P. Abbott et al. (LIGO Scientific Collaboration and Virgo
Collaboration). Phys. Rev. Lett. 116, 061102.
<http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.061102>
[2] B. P. Abbott et al. (LIGO Scientific Collaboration and Virgo
Collaboration). Phys. Rev. Lett. 116, 241103.
<http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.241103>
--
PointedEars
Twitter: @PointedEars2
Please do not cc me. / Bitte keine Kopien per E-Mail.
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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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