Whether they have been detected or not (someone might want to update on this, LIGO etc.?), it seems undeniable that gravitationnal waves exist. It seems sufficient to wave my hand to create one. My question is the following : if an oscillating charge produces a linearly polarized E-wave, there is a corresponding, perpendicular B-wave, but if an oscillating mass produces a linearly polarized G-wave, is there a corresponding "GB-wave"? Is there somekind of a gravitation "magnetic-like" field totally distinct from conventionnal magnetism? I would expect it to be quite miniscule, but what do the theorists say? Mixing Coulomb's Law with special relativity gives rise to regular magnetism, but what happens if you mix F = GMm/r^2 with special relativity?