[ExI] ligo again: was: RE: puzzling

[Stuart LaForge]

Quoting Dan TheBookMan)

> On Thu, Oct 22, 2020 at 3:06 AM Stuart LaForge via extropy-chat
> <extropy-chat at lists.extropy.org> wrote:
>> Perhaps dark matter is composed of both WIMPs and MACHOs. LIGO is
>> showing black holes are far more common than we thought and they could
>> comprise a good fraction of the total mass of our local bubble
>> universe. It seems to me that the arms of spiral galaxies rotate at
>> the same rate as the central disk because they are shepherded by
>> LIGO-detectable massed black holes, like Saturn's rings are shepherded
>> by moons.
>
> Is that last point something you've expanded on anywhere? It sounds
> like it would make an interesting model (or set of models) that could
> lead to testable predictions -- in particular where to look (evidence
> of) for shepherd black holes. And not just using LIGO.

Since you mentioned it, I tried to expand on it and accidently made  
most of the dark matter except for black holes disappear at least  
inside our galaxy. A dark matter halo of exotic particles might exist  
outside of the galaxy but the rotation curve of the galaxy is  
completely solvable by geometric considerations and completely  
unmodified Newtonian physics.

I discovered a solution which requires less dark matter than ordinary  
matter within the galaxy. Essentially all that is required is a  
concept I call the radial density defined as mass/radius and denoted  
by the Hebrew letter resh. The geometry that eliminates the need for  
dark matter particles to explain rotation curves is that the radial  
density of the Milky Way is constant with a value of 7.58*10^20 kg/m  
or approximately 1 solar mass per 8.75 light seconds of radius or 3.6  
million solar masses per light year of radius. With this solution one  
finds that the total mass of the Milky Way at a radius of 52850 LY is  
190 billion solar masses. Well below the estimates by the dark matter  
proponents.

Even if there were a dark matter halo, the fact that most of it would  
outside of the galaxy would mean that it would have almost no effect  
on the galaxies rotation.

Stuart LaForge


Stuart LaForge