| active galactic nucleus | AGN | 353 | 28 | 1.003033 | 9910536,9910469,etc |
| spectral energy distribution | SED | 191 | 27 | 2.001309 | 9910536,9910548,etc |
| point spread function | PSF | 111 | 21 | 2.001535 | 9910361,9910469,etc |
| interstellar medium | ISM | 171 | 20 | 1.00113 | 9910118,9910378,etc |
| cold dark matter | CDM | 308 | 17 | 1.003651 | 9910573,9910177,etc |
| cosmic microwave background | CMB | 310 | 16 | 2.00438 | 9910366,9910290,etc |
| gamma ray burst | GRB | 506 | 15 | 2.006303 | 9910204,9910237,etc |
| very large array | VLA | 170 | 15 | 1.002344 | 9910237,9910469,etc |
| color magnitude diagram | CMD | 91 | 13 | 2.001486 | 9910481,9910334,etc |
| initial mass function | IMF | 109 | 12 | 2.003392 | 9910276,9910151,etc |
| nasa/ipac extragalactic database | NED | 22 | 11 | 1.000426 | 9910099,9910021,etc |
| planetary nebula | PN | 339 | 11 | 2.007313 | 9910378,9910108,etc |
| asymptotic giant branch | AGB | 160 | 11 | 2.003988 | 9910378,9910377,etc |
| hubble space telescope | HST | 72 | 11 | 1.001316 | 9910021,9910469,etc |
| dark matter | DM | 203 | 10 | 2.003524 | 9910166,9910142,etc |
| broad line region | BLR | 298 | 10 | 1.002879 | 9910547,9910550,etc |
| intracluster medium | ICM | 154 | 9 | 1.0022 | 9910099,9910142,etc |
| supernova remnant | SNR | 153 | 9 | 1.003856 | 9910237,9910531,etc |
| star formation rate | SFR | 88 | 9 | 2.001399 | 9910258,9910151,etc |
| quasi periodic oscillation | QPO | 169 | 8 | 2.006488 | 9910120,9910371,etc |
| equivalent width | EW | 139 | 8 | 2.001185 | 9910547,9910095,etc |
| high resolution imager | HRI | 89 | 8 | 1.001445 | 9910361,9910188,etc |
| proportional counter array | PCA | 56 | 8 | 2.001253 | 9910107,9910188,etc |
| australia telescope compact array | ATCA | 45 | 8 | 1.001034 | 9910469,9910150,etc |
| luminosity function | LF | 150 | 8 | 2.002676 | 9910016,9910017,etc |
| large magellanic cloud | LMC | 117 | 7 | 2.004929 | 9910243,9910098,etc |
| supernova | SN | 164 | 7 | 2.003754 | 9910531,9910231,etc |
| red giant branch | RGB | 117 | 7 | 2.001693 | 9910481,9910334,etc |
| equation of state | EoS | 109 | 7 | 1.002551 | 9910154,9910371,etc |
| hubble deep field | HDF | 70 | 6 | 1.004277 | 9910554,9910137,etc |
| magnetohydrodynamic | MHD | 111 | 6 | 2.00302 | 9910204,9910034,etc |
| narrow line region | NLR | 71 | 6 | 1.001079 | 9910548,9910547,etc |
| ultraviolet | UV | 620 | 6 | 2.004806 | 9910382,9910098,etc |
| position sensitive proportional counter | PSPC | 92 | 6 | 1.002086 | 9910361,9910188,etc |
| all sky monitor | ASM | 17 | 6 | 1.000436 | 9910184,9910341,etc |
| low mass x ray binary | LMXB | 37 | 6 | 1.000927 | 9910107,9910371,etc |
| far infrared | FIR | 125 | 6 | 2.003995 | 9910279,9910213,etc |
| small magellanic cloud | SMC | 27 | 6 | 2.001469 | 9910279,9910151,etc |
| signal to noise ratio | SNR | 34 | 6 | 2.000753 | 9910432,9910001,etc |
| broad absorption line | BAL | 161 | 6 | 1.00563 | 9910306,9910410,etc |
| rossi x ray timing explorer | RXTE | 25 | 5 | 2.002345 | 9910184,9910188,etc |
| quasi periodic oscillations | QPO | 81 | 5 | 2.005203 | 9910107,9910014,etc |
| main sequence | MS | 56 | 5 | 2.001699 | 9910225,9910038,etc |
| ministry for university and research | MURST | 5 | 5 | 1.000037 | 9910469,9910106,etc |
| near infrared | NIR | 39 | 5 | 1.00152 | 9910238,9910185,etc |
| kolmogorov smirnov | KS | 29 | 5 | 1.000573 | 9910500,9910431,etc |
| synchrotron self compton | SSC | 81 | 4 | 2.00221 | 9910536,9910416,etc |
| burst and transient source experiment | BATSE | 72 | 4 | 2.002013 | 9910204,9910273,etc |
| space telescope imaging spectrograph | STIS | 45 | 4 | 2.000414 | 9910547,9910419,etc |
| faint object spectrograph | FOS | 18 | 4 | 2.000195 | 9910547,9910118,etc |
| sloan digital sky survey | SDSS | 47 | 4 | 2.0051 | 9910161,9910306,etc |
| power density spectrum | PDS | 68 | 4 | 2.00363 | 9910423,9910012,etc |
| rosat all sky survey | RASS | 62 | 4 | 1.002084 | 9910300,9910514,etc |
| wide field camera | WFC | 48 | 4 | 2.001565 | 9910107,9910124,etc |
| red supergiant | RSG | 17 | 4 | 1.001495 | 9910225,9910553,etc |
| lyman break galaxy | LBG | 93 | 4 | 2.003573 | 9910144,9910359,etc |
| eso imaging survey | EIS | 45 | 4 | 2.00426 | 9910447,9910055,etc |
| full width half maximum | FWHM | 15 | 4 | 1.000821 | 9910272,9910273,etc |
| intergalactic medium | IGM | 38 | 4 | 2.003122 | 9910177,9910448,etc |
| globular cluster | GC | 185 | 4 | 2.007496 | 9910334,9910072,etc |
| star formation | SF | 87 | 4 | 1.002433 | 9910258,9910026,etc |
| vainu bappu telescope | VBT | 28 | 4 | 1.001144 | 9910507,9910506,etc |
| vainu bappu observatory | VBO | 13 | 4 | 1.000289 | 9910507,9910506,etc |
| william herschel telescope | WHT | 9 | 4 | 1.000114 | 9910313,9910511,etc |
| the red giant branch | TRGB | 65 | 4 | 2.001102 | 9910501,9910402,etc |
| james clerk maxwell telescope | JCMT | 18 | 4 | 1.000568 | 9910564,9910072,etc |
| cerro tololo inter american observatory | CTIO | 11 | 4 | 1.000374 | 9910172,9910465,etc |
| black hole | BH | 77 | 4 | 1.004319 | 9910113,9910201,etc |
| infrared | IR | 51 | 3 | 1.002308 | 9910536,9910368,etc |
| press schechter | PS | 18 | 3 | 2.000423 | 9910166,9910033,etc |
| large area detector | LAD | 14 | 3 | 1.000316 | 9910204,9910484,etc |
| spectroscopy detector | SD | 28 | 3 | 1.001464 | 9910204,9910362,etc |
| broad line radio galaxy | BLRG | 50 | 3 | 2.002112 | 9910550,9910513,etc |
| narrow line radio galaxy | NLRG | 23 | 3 | 1.000746 | 9910550,9910513,etc |
| brightest cluster galaxy | BCG | 14 | 3 | 1.000351 | 9910550,9910494,etc |
| cumulative distribution function | CDF | 25 | 3 | 1.000746 | 9910550,9910073,etc |
| las campanas redshift survey | LCRS | 34 | 3 | 2.001126 | 9910100,9910250,etc |
| digital sky survey | DSS | 12 | 3 | 1.000832 | 9910383,9910486,etc |
| ultraviolet imaging telescope | UIT | 18 | 3 | 2.000616 | 9910382,9910094,etc |
| mid infrared | Mid-IR | 20 | 3 | 2.003064 | 9910531,9910063,etc |
| signal to noise | S/N | 8 | 3 | 1.000263 | 9910095,9910211,etc |
| friedmann robertson walker | FRW | 6 | 3 | 1.000484 | 9910290,9910568,etc |
| black hole candidate | BHC | 4 | 3 | 1.00015 | 9910184,9910562,etc |
| high pressure gas scintillation proportional counter | HP-GSPC | 12 | 3 | 1.000391 | 9910107,9910188,etc |
| smoothed particle hydrodynamics | SPH | 16 | 3 | 2.000868 | 9910573,9910441,etc |
| high energy x ray timing experiment | HEXTE | 3 | 3 | 1.000093 | 9910188,9910124,etc |
| giant molecular cloud | GMC | 23 | 3 | 1.000474 | 9910147,9910043,etc |
| new technology telescope | NTT | 4 | 3 | 1.000245 | 9910447,9910163,etc |
| giant molecular clouds | GMC | 3 | 3 | 1.000758 | 9910279,9910296,etc |
| soft gamma repeater | SGR | 61 | 3 | 2.005189 | 9910563,9910127,etc |
| anomalous x ray pulsar | AXP | 33 | 3 | 2.005888 | 9910563,9910127,etc |
| three dimensional | 3-D | 22 | 3 | 2.000973 | 9910357,9910364,etc |
| two dimensional | 2-D | 21 | 3 | 2.000904 | 9910357,9910033,etc |
| fundamental plane | F-P | 33 | 3 | 1.003545 | 9910106,9910165,etc |
| imaging atmospheric cherenkov telescope | IACT | 39 | 3 | 2.000909 | 9910461,9910443,etc |
| local group | LG | 14 | 3 | 1.000726 | 9910387,9910455,etc |
| surface brightness fluctuation | SBF | 103 | 3 | 2.007666 | 9910340,9910501,etc |
| standard cdm | SCDM | 8 | 3 | 1.000755 | 9910315,9910291,etc |
| advection dominated accretion flow | ADAF | 32 | 3 | 2.00145 | 9910427,9910023,etc |
| tully fisher | TF | 51 | 3 | 2.002864 | 9910353,9910281,etc |
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