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Re: Are gravitational waves being 'redshifted' away by the cosmological constant?

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Sam Wormley <swormley1@gmail.com> wrote:
> On 1/22/16 4:29 PM, Double-A wrote:
>> On Thursday, January 21, 2016 at 2:17:04 PM UTC-8, Sam Wormley wrote:
>>> Are gravitational waves being 'redshifted' away by the cosmological
>>> constant?
>>>> http://physicsworld.com/cws/article/news/2016/jan/21/are-gravitational-waves-being-redshifted-away-by-the-cosmological-constant
>>>
>>>
>>>
>>>> The theoretical framework underlying gravitational waves may have to
>>>> be revamped to account for dark energy and the acceleration of the
>>>> expansion of the universe. That's the conclusion of researchers in
>>>> the US, who say that while gravitational waves from nearby sources
>>>> will be unaffected, next-generation detectors such as the Laser
>>>> Interferometer Space Antenna (LISA) and the Einstein Telescope -
>>>> which aim to detect gravitational waves from billions of light-years
>>>> away - may fall foul of the expansion of the universe. While such
>>>> telescopes will still detect gravitational waves, the signal detected
>>>> from more distant waves could be fairly different to what is
>>>> currently expected, say the researchers.
>>>>
>>>> Dark energy is best explained by a small but positive value for the
>>>> cosmological constant, which describes the energy density of space.
>>>> It was the famous factor that Albert Einstein discarded from his
>>>> general theory of relativity, when it was found in 1929 that the
>>>> universe was expanding. For the next 69 years, theorists assumed that
>>>> the cosmological constant was equal to zero. However, in 1998, it was
>>>> discovered that the expansion of the universe was accelerating,
>>>> driven by the mysterious dark energy, and the cosmological constant
>>>> was back in the running.
>>>>
>>>> Because the value of the cosmological constant is very small (10-52
>>>> m2), it had been assumed that it would have a negligible effect on
>>>> the mathematical descriptions of gravitational waves. However, Abhay
>>>> Ashtekar and colleagues at the Institute for Gravitation and the
>>>> Cosmos at Penn State University in the US believe that it throws a
>>>> spanner into the works of our current gravitational-wave theories.
>>>>
>>
>>
>> What gravitational waves?
>>
>> Double-A
>>
> 
>   You can find out next month -- stay tuned.
 
How many copyrights will be violated? 

-- 
Jim Pennino

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Are gravitational waves being 'redshifted' away by the cosmological constant? Sam Wormley <swormley1@gmail.com> - 2016-01-21 16:17 -0600
  Re: Are gravitational waves being 'redshifted' away by the cosmological constant? jimp@specsol.spam.sux.com - 2016-01-21 23:45 +0000
    Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Sam Wormley <swormley1@gmail.com> - 2016-01-23 10:40 -0600
      Re: Are gravitational waves being 'redshifted' away by the cosmological constant? jimp@specsol.spam.sux.com - 2016-01-23 19:03 +0000
  Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Double-A <double-a3@hush.com> - 2016-01-22 14:29 -0800
    Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Sam Wormley <swormley1@gmail.com> - 2016-01-22 16:32 -0600
      Re: Are gravitational waves being 'redshifted' away by the cosmological constant? jimp@specsol.spam.sux.com - 2016-01-22 22:57 +0000
        Re: Are gravitational waves being 'redshifted' away by the cosmological constant? john <johnsefton288@gmail.com> - 2016-01-22 15:04 -0800
          Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Odd Bodkin <bodkinodd@gmail.com> - 2016-01-23 12:06 -0600
      Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Double-A <double-a3@hush.com> - 2016-01-23 14:13 -0800
    Re: Are gravitational waves being 'redshifted' away by the cosmological constant? jay moseley <jaymoseley@hotmail.com> - 2016-01-23 10:05 -0800
      Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "Y.Porat" <y.y.porat@gmail.com> - 2016-01-24 05:19 -0800
        Re: Are gravitational waves being 'redshifted' away by the cosmological constant? john <johnsefton288@gmail.com> - 2016-01-24 06:27 -0800
          Re: Are gravitational waves being 'redshifted' away by the cosmological constant? HVAC <mr.hvac@gmail.com> - 2016-01-24 07:31 -0800
            Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Mahipal <mahipal7638@gmail.com> - 2016-01-24 07:56 -0800
              Re: Are gravitational waves being 'redshifted' away by the cosmological constant? HVAC <mr.hvac@gmail.com> - 2016-01-24 08:20 -0800
                Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "Y.Porat" <y.y.porat@gmail.com> - 2016-01-24 10:43 -0800
                Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "Sofa King" <invalid@example.com> - 2016-01-24 16:27 -0800
                Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Mahipal <mahipal7638@gmail.com> - 2016-01-24 17:40 -0800
                Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "Y.Porat" <y.y.porat@gmail.com> - 2016-01-25 23:29 -0800
                Re: Are gravitational waves being 'redshifted' away by the cosmological constant? benj <none@gmail.com> - 2016-01-25 01:54 -0500
              Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "We Todd Did" <invalid@example.com> - 2016-01-24 16:29 -0800
                Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Mahipal <mahipal7638@gmail.com> - 2016-01-24 17:57 -0800
            Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "Y.Porat" <y.y.porat@gmail.com> - 2016-01-24 10:34 -0800
            Re: Are gravitational waves being 'redshifted' away by the cosmological constant? benj <none@gmail.com> - 2016-01-25 01:48 -0500
          Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Odd Bodkin <bodkinodd@gmail.com> - 2016-01-25 10:13 -0600
            Re: Are gravitational waves being 'redshifted' away by the cosmological constant? john <johnsefton288@gmail.com> - 2016-01-25 10:21 -0800
              Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "Y.Porat" <y.y.porat@gmail.com> - 2016-01-25 23:45 -0800
            Re: Are gravitational waves being 'redshifted' away by the cosmological constant? noTthaTguY <abu.kuanysh05@gmail.com> - 2016-01-25 12:33 -0800
            Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "Y.Porat" <y.y.porat@gmail.com> - 2016-01-25 23:41 -0800
  Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-01-23 10:37 -0800
    Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Double-A <double-a3@hush.com> - 2016-01-25 12:40 -0800
      Re: Are gravitational waves being 'redshifted' away by the cosmological constant? Sam Wormley <swormley1@gmail.com> - 2016-01-25 16:26 -0600
        Re: Are gravitational waves being 'redshifted' away by the cosmological constant? john <johnsefton288@gmail.com> - 2016-01-25 16:15 -0800
          Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "Y.Porat" <y.y.porat@gmail.com> - 2016-01-25 23:47 -0800
        Re: Are gravitational waves being 'redshifted' away by the cosmological constant? "reber g=emc^2" <herbertglazier0@gmail.com> - 2016-01-25 16:47 -0800

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