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Astronomy · L4 · Galactic dynamics: the rotation curve problem and dark matter · flowchart

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by @openstemUpdated Astronomy
Observed: rotation curvestays flat at large rv² = GM(r)/r held constant⟹ M(r) ∝ rEnclosed mass keeps growingwith radius, well past visible lightDoes visible matteraccount for M(r)?Extended dark matter haloρ(r) ∝ 1/r²Expected Keplerian falloffv ∝ 1/√r (not observed)No — visible mass levels off quicklyIf yes

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