| active galactic nucleus | AGN | 686 | 36 | 2.003315 | 0401133,0401320,etc |
| spectral energy distribution | SED | 273 | 29 | 2.001492 | 0401344,0401479,etc |
| cosmic microwave background | CMB | 400 | 29 | 1.003054 | 0401565,0401622,etc |
| interstellar medium | ISM | 260 | 28 | 1.001528 | 0401601,0401560,etc |
| star formation rate | SFR | 482 | 26 | 2.003905 | 0401394,0401051,etc |
| point spread function | PSF | 299 | 24 | 1.003007 | 0401299,0401619,etc |
| cold dark matter | CDM | 140 | 23 | 2.002921 | 0401547,0401097,etc |
| initial mass function | IMF | 367 | 22 | 2.00235 | 0401052,0401197,etc |
| nasa/ipac extragalactic database | NED | 36 | 21 | 1.00018 | 0401289,0401641,etc |
| gamma ray burst | GRB | 509 | 19 | 2.008159 | 0401272,0401180,etc |
| sloan digital sky survey | SDSS | 145 | 15 | 2.002092 | 0401098,0401441,etc |
| very large array | VLA | 123 | 14 | 1.002938 | 0401394,0401133,etc |
| luminosity function | LF | 354 | 14 | 2.003344 | 0401133,0401619,etc |
| supernova | SN | 419 | 13 | 2.006462 | 0401394,0401232,etc |
| equivalent width | EW | 156 | 13 | 2.000495 | 0401051,0401234,etc |
| color magnitude diagram | CMD | 247 | 13 | 1.001823 | 0401197,0401144,etc |
| red giant branch | RGB | 186 | 12 | 2.004801 | 0401098,0401197,etc |
| hubble space telescope | HST | 64 | 12 | 1.001331 | 0401051,0401570,etc |
| signal to noise ratio | S/N | 77 | 11 | 1.001046 | 0401619,0401234,etc |
| asymptotic giant branch | AGB | 179 | 11 | 2.001664 | 0401479,0401135,etc |
| cataclysmic variable | CV | 114 | 11 | 2.003859 | 0401145,0401176,etc |
| full width at half maximum | FWHM | 55 | 11 | 1.000996 | 0401217,0401514,etc |
| globular cluster | GC | 601 | 10 | 2.007562 | 0401299,0401619,etc |
| equation of state | EOS | 196 | 10 | 2.004522 | 0401465,0401080,etc |
| supernova remnant | SNR | 112 | 9 | 1.00296 | 0401299,0401348,etc |
| low mass x ray binary | LMXRB | 54 | 9 | 1.002345 | 0401299,0401465,etc |
| ultraviolet | UV | 130 | 9 | 2.00178 | 0401394,0401635,etc |
| near infrared | near-IR | 70 | 9 | 2.001695 | 0401441,0401638,etc |
| advanced camera for surveys | ACS | 62 | 9 | 2.000755 | 0401570,0401483,etc |
| black hole | BH | 221 | 9 | 2.002284 | 0401191,0401046,etc |
| infrared | IR | 209 | 9 | 2.004474 | 0401197,0401495,etc |
| intracluster medium | ICM | 78 | 9 | 2.000935 | 0401178,0401478,etc |
| large magellanic cloud | LMC | 102 | 8 | 2.000832 | 0401619,0401146,etc |
| wilkinson microwave anisotropy probe | WMAP | 35 | 8 | 1.000693 | 0401269,0401341,etc |
| main sequence | MS | 236 | 8 | 2.002915 | 0401144,0401153,etc |
| intergalactic medium | IGM | 147 | 8 | 2.002472 | 0401298,0401439,etc |
| hubble deep field | HDF | 55 | 7 | 1.001061 | 0401401,0401146,etc |
| smoothed particle hydrodynamics | SPH | 123 | 7 | 2.002526 | 0401011,0401232,etc |
| sunyaev zeldovich | SZ | 144 | 7 | 2.00567 | 0401340,0401191,etc |
| rossi x ray timing explorer | RXTE | 30 | 7 | 2.000805 | 0401465,0401275,etc |
| advection dominated accretion flow | ADAF | 121 | 7 | 1.004253 | 0401460,0401205,etc |
| very large telescope | VLT | 37 | 7 | 1.001178 | 0401500,0401246,etc |
| dark matter | DM | 126 | 7 | 2.003231 | 0401088,0401126,etc |
| space telescope imaging spectrograph | STIS | 126 | 7 | 2.00233 | 0401469,0401226,etc |
| planetary nebula | PN | 212 | 7 | 2.004217 | 0401326,0401056,etc |
| charge transfer inefficiency | CTI | 9 | 6 | 1.00015 | 0401165,0401592,etc |
| high mass x ray binary | HMXRB | 33 | 6 | 1.000454 | 0401394,0401537,etc |
| lyman break galaxy | LBG | 128 | 6 | 1.003209 | 0401051,0401215,etc |
| proportional counter array | PCA | 77 | 6 | 2.001706 | 0401465,0401205,etc |
| position angle | PA | 105 | 6 | 2.002664 | 0401373,0401255,etc |
| horizontal branch | HB | 51 | 6 | 2.000929 | 0401052,0401153,etc |
| two micron all sky survey | 2MASS | 88 | 6 | 2.001965 | 0401197,0401514,etc |
| star formation history | SFH | 43 | 6 | 1.000916 | 0401427,0401387,etc |
| signal to noise | S/N | 35 | 6 | 2.000353 | 0401427,0401263,etc |
| inverse compton | IC | 76 | 6 | 1.001561 | 0401122,0401523,etc |
| broad line region | BLR | 73 | 6 | 1.001421 | 0401168,0401607,etc |
| big bang nucleosynthesis | BBN | 61 | 5 | 1.001632 | 0401547,0401091,etc |
| the red giant branch | TRGB | 216 | 5 | 2.006162 | 0401098,0401092,etc |
| nrao vla sky survey | NVSS | 113 | 5 | 2.001972 | 0401133,0401516,etc |
| digitized sky survey | DSS | 23 | 5 | 1.000469 | 0401133,0401187,etc |
| large scale structure | LSS | 15 | 5 | 1.000323 | 0401133,0401340,etc |
| wolf rayet | WR | 264 | 5 | 2.011633 | 0401571,0401135,etc |
| kolmogorov smirnov | K-S | 14 | 5 | 1.00163 | 0401619,0401088,etc |
| flat spectrum radio quasar | FSRQ | 41 | 5 | 2.001949 | 0401516,0401626,etc |
| wide field camera | WFC | 23 | 5 | 1.000429 | 0401025,0401374,etc |
| singular isothermal sphere | SIS | 29 | 5 | 1.000992 | 0401373,0401403,etc |
| infrared space observatory | ISO | 85 | 5 | 2.003828 | 0401377,0401246,etc |
| star formation | SF | 83 | 5 | 2.00167 | 0401144,0401455,etc |
| quasi periodic oscillation | QPO | 58 | 5 | 2.002334 | 0401464,0401484,etc |
| synchrotron self compton | SSC | 34 | 5 | 2.00047 | 0401356,0401271,etc |
| narrow line region | NLR | 47 | 5 | 1.000925 | 0401167,0401173,etc |
| european photon imaging camera | EPIC | 40 | 4 | 1.001158 | 0401299,0401227,etc |
| white dwarf | WD | 17 | 4 | 1.001111 | 0401299,0401145,etc |
| black hole candidate | BHC | 62 | 4 | 2.002247 | 0401299,0401205,etc |
| blue compact dwarf | BCD | 34 | 4 | 2.000812 | 0401394,0401462,etc |
| ultra luminous x ray source | ULX | 35 | 4 | 2.002078 | 0401394,0401223,etc |
| weakly interacting massive particle | WIMP | 109 | 4 | 1.002863 | 0401547,0401162,etc |
| supersymmetric | SUSY | 32 | 4 | 2.001824 | 0401565,0401511,etc |
| friends of friends | FoF | 5 | 4 | 1.000276 | 0401097,0401342,etc |
| kpno international spectroscopic survey | KISS | 406 | 4 | 2.00606 | 0401133,0401131,etc |
| magnetohydrodynamic | MHD | 28 | 4 | 1.000367 | 0401243,0401375,etc |
| astrophysics data system | ADS | 16 | 4 | 1.002656 | 0401479,0401467,etc |
| very long baseline array | VLBA | 19 | 4 | 1.00132 | 0401320,0401319,etc |
| advanced ccd imaging spectrometer | ACIS | 57 | 4 | 2.002722 | 0401592,0401377,etc |
| local thermodynamic equilibrium | LTE | 16 | 4 | 2.00031 | 0401467,0401396,etc |
| isaac newton telescope | INT | 33 | 4 | 2.000457 | 0401025,0401374,etc |
| chandra deep field south | CDF-S | 24 | 4 | 2.003831 | 0401483,0401427,etc |
| hubble deep field north | HDF-N | 10 | 4 | 1.001296 | 0401500,0401047,etc |
| turn off | TO | 30 | 4 | 1.003587 | 0401197,0401153,etc |
| intra cluster medium | ICM | 42 | 4 | 1.001782 | 0401462,0401576,etc |
| new technology telescope | NTT | 5 | 4 | 1.000097 | 0401151,0401012,etc |
| globular cluster system | GCS | 38 | 4 | 2.002471 | 0401610,0401218,etc |
| medium energy grating | MEG | 38 | 4 | 2.000352 | 0401226,0401583,etc |
| high velocity cloud | HVC | 36 | 4 | 1.00077 | 0401226,0401036,etc |
| reflection grating spectrometer | RGS | 30 | 4 | 2.002374 | 0401327,0401328,etc |
| period luminosity | PL | 138 | 4 | 2.010353 | 0401273,0401211,etc |
| european southern observatory | ESO | 25 | 4 | 1.000336 | 0401012,0401564,etc |
| innermost stable circular orbit | ISCO | 29 | 4 | 1.000954 | 0401173,0401117,etc |
| low surface brightness | LSB | 19 | 4 | 2.00033 | 0401349,0401364,etc |
| european vlbi network | EVN | 35 | 3 | 1.002347 | 0401562,0401516,etc |
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