Related by context. Frequent words. (Click for all words.) 64 redshifts 62 photometry 61 spectra 61 interferometry 59 spectroscopic 59 Hubble observations 58 active galactic nuclei 58 auroral 58 redshift 58 amplitudes 58 astronomical objects 57 NICMOS 57 morphologies 57 visible wavelengths 56 radial velocity 56 singularities 56 X ray emission 56 quasars 56 electron density 56 photonic crystal 56 anisotropy 56 XMM Newton 55 InGaAs 55 solar nebula 55 dispersive 55 z = 55 GRBs 55 astronomical observations 55 globular cluster 55 Type Ia supernovae 54 planetary nebulae 54 photometric 54 abundances 54 anisotropic 54 shorter wavelengths 54 supernova remnants 54 magnetization 54 GeV 54 magnetar 54 photometer 54 photonic crystals 54 elliptical galaxies 54 diffraction 53 astrophysical 53 solar corona 53 reflectance 53 numerical simulations 53 gravitational lensing 53 ionospheric 53 interferometer 53 globular clusters 53 infrared wavelengths 53 galaxy clusters 53 GRB # 52 photodetector 52 brown dwarfs 52 fluorescing 52 isotopic composition 52 confocal 52 excitations 52 gravitational wave 52 waveguides 52 supernova remnant 52 spatial resolution 52 particle detectors 52 voxels 52 excitons 52 rubidium 52 photodiodes 52 dwarf galaxy 52 WFC3 52 haloes 52 infrared radiation 52 X ray diffraction 52 exciton 52 dipoles 52 ESO Very Large Telescope 52 Hawking radiation 52 positrons 52 Fig. 1A 52 Supplementary Fig 52 voxel 52 keV 52 fluorophores 52 multispectral 52 VLBI 51 wavefront 51 COROT 51 spectroscopy 51 wavelengths 51 STIS 51 ferromagnetic 51 WM Keck Observatory 51 isotropic 51 accretion disk 51 FRET 51 Mauna Kea Hawaii 51 optical telescopes 51 QDs 51 nanocrystal 51 semiconducting