Is this a break though or just hot air?(adsbygoogle = window.adsbygoogle || []).push({});

http://arxiv.org/pdf/1510.05534.pdf

We do not claim that the Mestel (1963) disk is the answer to establishing the universality of flat rotation curves in galaxy disks; only that it has always been a telling clue that gravity does not pull the strings and is not in control in gaseous self-gravitating disks. Furthermore, we have solved the full Newtonian problem and we now know precisely how such universal rotation curves emerge in spiral galaxy disks. The resolution of this ubiquitous problem is the subject of this paper. Before we can delve into the physics of the problem, we need to correct some common misconceptions that appear in the theory of second-order differential equations and which also have made their way into the textbooks. We do so in § 2. Then, in § 3, we revisit the theory of rotating Newtonian isothermal gaseous-disk equilibrium models and we calculate analytically the mean shapes of their density profiles and their rotation curves. The results match precisely the shapes of the rotation curves of spiral galaxy disks with no additional assumptions of any kind. So these results make a strong case against both dark matter and modified gravity and their implications have far-reaching consequences

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# No Dark Matter or gravity modification for flat rot

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