Related by context. Frequent words. (Click for all words.) 71 laser pulse 71 laser pulses 69 X ray emission 68 shorter wavelengths 67 femtoseconds 67 interferometry 67 picosecond 65 visible wavelengths 65 picoseconds 65 gamma ray burst 65 Gamma ray bursts 65 exciton 65 GRBs 64 excitons 64 magnetar 64 photonic crystal 64 photons 63 frequency comb 62 terahertz radiation 62 antiprotons 62 alpha particles 62 photodetector 62 isotropic 62 electron beams 62 magnetic fields 62 gamma rays 62 Eta Carinae 62 X ray beam 62 amplitudes 61 synchrotron radiation 61 photon 61 supernova explosion 61 wavelengths 61 infrared wavelengths 61 supernova remnant 61 pulsations 61 auroral 61 Hubble observations 61 accretion disk 61 spectra 61 dye molecules 60 spectroscopic 60 Type Ia supernovae 60 gravitational lensing 60 GeV 60 GRB # 60 neutrons 60 femtosecond 60 ionized gas 60 Crab Nebula 60 planet orbits 60 gamma ray bursts 60 magnetization 59 optical microscopy 59 microwave frequencies 59 redshift 59 infrared radiation 59 spectrometry 59 dwarf galaxy 59 supernova explosions 59 quasar 59 XMM Newton 59 Earth magnetosphere 59 diffraction 59 particle beams 59 supernovae 59 muon 59 planetary nebulae 59 planetary nebula 59 substorms 59 irradiance 59 muons 59 phosphorescence 59 supernova 58 fluorescence 58 magnetic pulses 58 absorbance 58 gravitational wave 58 excitation 58 solar nebula 58 gamma ray 58 plasmons 58 observable universe 58 HD #b [002] 58 Brownian motion 58 galaxy cluster 58 radioactive decay 58 LCLS 58 cosmic ray 58 neutrino 58 atomic nuclei 58 subatomic particle 58 gravitational waves 57 Photons 57 atomic particles 57 nanocrystal 57 supernova remnants 57 photometric 57 ionization 57 interferometer 57 ESO Very Large Telescope