Could the Earth have a dark matter core as well as a disk? If it is established that the Earth does have a dark matter disk as this recent discovery suggests.
http://www.newscientist.com/article/mg22129503.100-gps-satellites-suggest-earth-is-heavy-with-dark-matter.html
Then could the Earth have a dark matter core as well as a disk? 
 A: Presumably the distribution described in the article is the one that the data support. That implies that the data don't really support some other distribution.
Now NewScientist in a basically a pop-sci venue so they may be simplifying the report, but the paper doesn't seem to offer an analysis on the limits of the result. Indeed this seems to be a pretty sketchy, first-pass type analysis.
A: 1) There is no consistent empirical detection of dark matter, arXiv:1310.4009, 0906.0668; arXiv:1310.8214, 1306.5534, 1306.3983. Quite the contrary. 
2) Dark matter can be a curve fit of Milgrom acceleration. Milgrom acceleration can arise in a wholly natural, universal, and bench top testable way (off-topic here). 
3) There is no mechanism for dark matter to cool from the Big Bang until now, then be orbitally diddled. 
4) If dark matter could be disked, galaxies would not have a spherical dark matter distribution necessary to curve-fit the Tully-Fisher relation.  
5) If a galaxy has a spherical cloud distribution of gravitationally bound hot dark matter curve-fitting Tully-Fisher, what keeps dark matter from being scavenged by each galaxy's central giant black hole, with fireworks? 
No dark matter at all.  No fancy dark matter orbits or sequestrations short of extreme gravitational wells (black holes, neutron stars, maybe white dwarfs) for its uncooling temperature.
