Brazilian Journal of Physics ISSN: 0103-9733
[email protected] Sociedade Brasileira de Física Brasil Portilho, Oyanarte On a possible connection between Chandler wobble and dark matter Brazilian Journal of Physics, vol. 39, núm. 1, marzo, 2009, pp. 1-11 Sociedade Brasileira de Física Sâo Paulo, Brasil Available in: http://www.redalyc.org/articulo.oa?id=46413555001 How to cite Complete issue Scientific Information System More information about this article Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Journal's homepage in redalyc.org Non-profit academic project, developed under the open access initiative Brazilian Journal of Physics, vol. 39, no. 1, March, 2009 1 On a possible connection between Chandler wobble and dark matter Oyanarte Portilho∗ Instituto de F´ısica, Universidade de Bras´ılia, 70919-970 Bras´ılia–DF, Brazil (Received on 17 july, 2007) Chandler wobble excitation and damping, one of the open problems in geophysics, is treated as a consequence in part of the interaction between Earth and a hypothetical oblate ellipsoid made of dark matter. The physical and geometrical parameters of such an ellipsoid and the interacting torque strength is calculated in such a way to reproduce the Chandler wobble component of the polar motion in several epochs, available in the literature. It is also examined the consequences upon the geomagnetic field dynamo and generation of heat in the Earth outer core. Keywords: Chandler wobble; Polar motion; Dark matter. 1. INTRODUCTION ence of a DM halo centered in the Sun and its influence upon the motion of planets; numerical simulations due to Diemand et al.