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This paper:
http://www.edpsciences.org/papers/aa/pdf/press-releases/aa0959.pdf
...press release:
http://www.eso.org/outreach/press-rel/pr-2004/pr-08-04.html
suggests that the kinematic heating (statistical dispersion of velocities in the perpendicular plane to the galactic plane) of the Milky Way disk, may be due to massive compact objetcs (but must not; three other sources are mentioned: spiral arms effects, satellite galaxies and gas clouds).
Besides from the fact that the paper is quite interesting, my question is how far such an hypothesis could question the constraints put on the distribution and nature of dark matter in spiral galaxies. Let's say: what is the influence of dark matter on kinematic heating of the disk, if any?
Regards.
http://www.edpsciences.org/papers/aa/pdf/press-releases/aa0959.pdf
...press release:
http://www.eso.org/outreach/press-rel/pr-2004/pr-08-04.html
suggests that the kinematic heating (statistical dispersion of velocities in the perpendicular plane to the galactic plane) of the Milky Way disk, may be due to massive compact objetcs (but must not; three other sources are mentioned: spiral arms effects, satellite galaxies and gas clouds).
Besides from the fact that the paper is quite interesting, my question is how far such an hypothesis could question the constraints put on the distribution and nature of dark matter in spiral galaxies. Let's say: what is the influence of dark matter on kinematic heating of the disk, if any?
Regards.
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