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Old December 11th 18, 09:06 PM posted to sci.astro.research
Jos Bergervoet[_3_]
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Default dark matter hypothesis

[[Mod. note --
My apologies for the delay in processing this article, which the
author submitted on 2018-12-09.
-- jt]]

On 12/8/2018 7:38 PM, Steve Willner wrote:
In article ,
jacobnavia writes:
IF the halo is spherical THEN the study is right.

If the halo is NOT spherical but follows the plane of the milky way,
i.e. most dead stars are in the galaxy plane and WITHIN the galaxy, that
study proves nothing.


Aren't there also microlensing studies towards the Galactic bulge?

Now, most stars that go supernovae have non-symmetrical explosions that
could propel their "dead" corpses in random directions, but the galaxy's
gravity should hold most of them back and keep them within the galaxy
plane.


How would motion perpendicular to the plane be damped out?


If they oscillate up and down the plane, then each time they go through
the plane and traverse the denser regions, the elastic collisions with
other stars create friction, just like atoms in a gas see friction by
the collisions with other atoms (or molecules).

This does not seem to be different from what happens before they go
supernova, of course..

--
Jos