Related by context. Frequent words. (Click for all words.) 61 spacetime 59 singularities 59 magnetar 58 subatomic particle 58 Brownian motion 58 dispersive 58 excitations 57 dynamical 57 superfluid 57 isotropic 57 anisotropy 56 magnetic reconnection 56 oscillation 56 photonic crystal 56 interferometry 56 macroscopic 56 Bose Einstein condensate 55 quantized 55 cosmological 55 magnetization 55 ionospheric 55 perturbation 55 gravitational lensing 54 anisotropic 54 auroral 54 amplitudes 54 toroidal 54 ferromagnetic 54 X ray emission 53 elliptical galaxies 53 topological 53 planetary nebulae 53 exciton 53 quantum gravity 53 fractals 53 radiative 53 entropic 53 convective 53 symmetries 53 discontinuous 53 cuprates 53 ionized gas 53 planetary nebula 53 phonons 52 vortices 52 gravitational wave 52 crystal lattice 52 perturbations 52 phenomenological 52 accretion disk 52 crystalline structure 52 Earth magnetosphere 52 pulsations 52 quantum mechanics 52 active galactic nuclei 52 discontinuities 52 morphologies 52 nanoscopic 52 Gaussian 52 quantum entanglement 52 gravitational waves 52 conductance 52 galaxy cluster 52 high temperature superconductors 52 quasars 51 high temperature superconductivity 51 optical microscopy 51 parallax 51 GRBs 51 galaxy formation 51 quark gluon plasma 51 helices 51 quasar 51 excitons 51 geometrical 51 numerical simulations 51 invariant 51 Kuiper belt 51 quantum mechanical 51 terahertz radiation 51 starbursts 51 torus 51 oscillations 51 haloes 50 fractal 50 ribozyme 50 whorls 50 solar corona 50 singularity 50 spherical 50 globular cluster 50 frequency comb 50 visible wavelengths 50 astrophysical 50 magnetic fields 50 Type Ia supernovae 50 electromagnetic 50 lithosphere 50 bosons 50 periodicity 50 observable universe