[ExI] Gravitational Waves Detected By LIGO!

Giovanni Santostasi gsantostasi at gmail.com
Thu Feb 11 19:22:29 UTC 2016


And this is the paper that contains the astrophysical implications of the
discovery:

https://dcc.ligo.org/LIGO-P1500262/public/main

On Thu, Feb 11, 2016 at 2:09 PM, Giovanni Santostasi <gsantostasi at gmail.com>
wrote:

> On what?
>
> On Thu, Feb 11, 2016 at 2:04 PM, Tomaz Kristan <protokol2020 at gmail.com>
> wrote:
>
>> I was wrong. Simply wrong.
>>
>> On Thu, Feb 11, 2016 at 7:44 PM, Giovanni Santostasi <
>> gsantostasi at gmail.com> wrote:
>>
>>> I think most of the energy though was channeled in to gravitational
>>> waves. They would not be so deadly at long distances from the source.
>>>
>>> On Thu, Feb 11, 2016 at 1:39 PM, Giulio Prisco <giulio at gmail.com> wrote:
>>>
>>>> The energy that kills an entire galaxy would be released as hard gamma
>>>> rays. "Hot enough to break nuclei at 50,000 light years" (Egan's Diaspora)
>>>>
>>>> On Feb 11, 2016, at 6:50 PM, spike <spike66 at att.net> wrote:
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> *From:* extropy-chat [mailto:extropy-chat-bounces at lists.extropy.org
>>>> <extropy-chat-bounces at lists.extropy.org>] *On Behalf Of *Anders
>>>> Sandberg
>>>> *…*
>>>>
>>>> >…If we assume the energy release was around 10^50 J over a second,
>>>> then the power per square meter at distance d is 10^50/(4 pi r^2) Watts. So
>>>> the criticial distance if the danger power is P is r=sqrt(10^50/4 pi P). If
>>>> we assume a megawatt/m^2 is enough to cause biosphere damage, then the
>>>> distance is 298,000 lightyears. To wipe out more advanced civilizations I
>>>> would expect a much higher P; for a gigawatt the range is 9,400 lightyears
>>>> - bad in the central part of a galaxy, but not even covering it…
>>>>
>>>>
>>>>
>>>> Anders, cool, but we need to know how GW energy would interact with
>>>> matter before we conclude that it would nuke biomes.
>>>>
>>>> spike
>>>>
>>>>
>>>>
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>>>>
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>>>>
>>>
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>>>
>>
>>
>> --
>> https://protokol2020.wordpress.com/
>>
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