[ExI] No black holes with singularities?

Flexman, Connor connor_flexman at brown.edu
Sun Jan 18 22:25:56 UTC 2015

On Sun, Jan 18, 2015 at 11:43 AM, Bryan Bishop <kanzure at gmail.com> wrote:

> Here is a funny little paper I stumbled into recently (after being tipped
> off about black hole skeptics):
> "The calculations of general relativity on massive celestial bodies
> collapsing into singular black holes are wrong"
> http://diyhpl.us/~bryan/papers2/physics/astrophysics/The%20calculations%20of%20general%20relativity%20on%20massive%20celestial%20bodies%20collapsing%20into%20singular%20black%20holes%20are%20wrong.pdf
> "Cosmology should directly use the Doppler's formula to calculate the red
> shift of Ia supernova"
> http://diyhpl.us/~bryan/papers2/physics/astrophysics/Cosmology%20should%20directly%20use%20the%20Doppler's%20formula%20to%20calculate%20the%20red%20shift%20of%20Ia%20supernova.pdf
Yeah I'm definitely calling BS on the first two. I haven't stumbled across
too much bogus physics but I've definitely heard it's out there, perhaps
more likely than I thought because of selection bias.

> Anyway the reason I bring this up is because of the interesting SETI
> context, like:
> http://arxiv.org/pdf/1104.4362.pdf
>From the SETI paper: I like the idea of looking for civilizations not
attempting to communicate with us. However, I don't understand the one
about expanding from looking at our galaxy to looking at ones far distant
in time and space. Do the XRBs from that distance penetrate to us and
provide meaningful information? How can we identify an extragalactic
intelligence at that scale unless the whole galaxy lights up with some
radiation burst?
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