[ExI] Gravitational Waves Detected By LIGO!

[Tomaz Kristan]

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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