| signal to noise | S/N | 372 | 65 | 1.416025 | 0201437,0201214,etc |
| inverse compton | IC | 776 | 65 | 1.663455 | 0202279,0202116,etc |
| low surface brightness | LSB | 1004 | 57 | 1.335952 | 0201352,0201141,etc |
| space telescope imaging spectrograph | STIS | 778 | 56 | 1.751163 | 0201351,0201266,etc |
| kolmogorov smirnov | KS | 255 | 54 | 1.315379 | 0201532,0201435,etc |
| wolf rayet | WR | 1505 | 53 | 1.816205 | 0201091,0201232,etc |
| advanced ccd imaging spectrometer | ACIS | 609 | 47 | 1.342831 | 0201111,0201379,etc |
| sunyaev zel'dovich | SZ | 1368 | 42 | 1.790132 | 0201223,0201421,etc |
| colour magnitude diagram | CMD | 682 | 42 | 1.573387 | 0203077,0203292,etc |
| proportional counter array | PCA | 311 | 38 | 1.579995 | 0201468,0201160,etc |
| all sky monitor | ASM | 246 | 37 | 1.379539 | 0201080,0201175,etc |
| max planck institute for astronomy | MPIA | 37 | 37 | 1.000073 | 0202408,0202251,etc |
| star formation history | SFH | 369 | 36 | 1.751514 | 0202191,0202176,etc |
| synchrotron self compton | SSC | 280 | 34 | 1.118888 | 0201395,0201116,etc |
| astrophysical research consortium | ARC | 43 | 34 | 1.000107 | 0202251,0202235,etc |
| wide field camera | WFI | 227 | 31 | 1.259473 | 0202494,0202268,etc |
| rosat all sky survey | RASS | 329 | 30 | 1.601146 | 0201048,0201069,etc |
| full width half maximum | FWHM | 217 | 30 | 1.201113 | 0201328,0201273,etc |
| wide field planetary camera 2 | WFPC2 | 298 | 29 | 1.414866 | 0203131,0203391,etc |
| dwarf spheroidal | dSph | 688 | 28 | 1.753094 | 0201011,0201297,etc |
| reflection grating spectrometer | RGS | 245 | 28 | 1.358343 | 0201271,0201386,etc |
| tully fisher | TF | 351 | 27 | 1.335689 | 0201406,0201272,etc |
| friedmann robertson walker | FRW | 76 | 25 | 1.120565 | 0201056,0201229,etc |
| ultra luminous infrared galaxy | ULIRG | 175 | 25 | 1.241161 | 0201180,0201209,etc |
| nasa extragalactic database | NED | 47 | 22 | 1.000169 | 0201447,0201178,etc |
| integrated sachs wolfe | ISW | 117 | 22 | 1.364721 | 0201237,0201127,etc |
| intra cluster medium | ICM | 394 | 22 | 1.81985 | 0202095,0202020,etc |
| planetary camera | PC | 384 | 21 | 1.620328 | 0201062,0201185,etc |
| hubble deep field north | HDFN | 220 | 21 | 1.715862 | 0201444,0201290,etc |
| low luminosity agn | LLAGN | 230 | 21 | 1.28805 | 0201531,0201065,etc |
| two dimensional | 2D | 345 | 21 | 1.90592 | 0201430,0201157,etc |
| burst and transient source experiment | BATSE | 270 | 21 | 1.716296 | 0202209,0202100,etc |
| european photon imaging camera | EPIC | 115 | 20 | 1.200853 | 0202077,0202398,etc |
| charge transfer inefficiency | CTI | 153 | 20 | 1.402843 | 0203174,0203235,etc |
| blue compact dwarf | BCD | 356 | 19 | 1.31759 | 0202057,0202433,etc |
| high resolution imager | HRI | 221 | 18 | 1.279877 | 0201107,0201165,etc |
| faint object spectrograph | FOS | 125 | 18 | 1.778212 | 0202134,0202252,etc |
| proportional counter unit | PCU | 92 | 17 | 1.353444 | 0201080,0201134,etc |
| black hole candidate | BHC | 70 | 17 | 1.118261 | 0202295,0202154,etc |
| sunyaev zeldovich | SZ | 241 | 17 | 1.76872 | 0203169,0203303,etc |
| atacama large millimeter array | ALMA | 153 | 17 | 1.002155 | 0205457,0205525,etc |
| early data release | EDR | 142 | 17 | 1.296399 | 0206413,0206146,etc |
| monte carlo | MC | 139 | 16 | 1.376451 | 0201443,0201287,etc |
| wide field and planetary camera 2 | WFPC2 | 206 | 16 | 1.500959 | 0201166,0201185,etc |
| one dimensional | 1D | 111 | 16 | 1.375693 | 0202328,0202379,etc |
| charge transfer efficiency | CTE | 40 | 16 | 1.000189 | 0204234,0204057,etc |
| three dimensional | 3D | 182 | 15 | 1.734313 | 0201083,0201197,etc |
| goddard high resolution spectrograph | GHRS | 127 | 15 | 1.134101 | 0201298,0201177,etc |
| 2 micron all sky survey | 2MASS | 162 | 15 | 1.535162 | 0202182,0202216,etc |
| period luminosity | P-L | 117 | 15 | 1.468317 | 0204168,0204246,etc |
| rayleigh taylor | RT | 123 | 14 | 1.430037 | 0201271,0201423,etc |
| soft gamma ray repeater | SGR | 337 | 14 | 1.365164 | 0201380,0201158,etc |
| cosmic infrared background | CIRB | 305 | 14 | 1.502607 | 0201444,0201328,etc |
| friends of friends | FoF | 96 | 14 | 1.358739 | 0202325,0202064,etc |
| compact steep spectrum | CSS | 78 | 13 | 1.155181 | 0201139,0201536,etc |
| advanced camera for surveys | ACS | 90 | 13 | 1.385759 | 0203042,0203521,etc |
| dwarf irregular | DIG | 196 | 13 | 1.616543 | 0203340,0203188,etc |
| kelvin helmholtz | KH | 80 | 12 | 1.333732 | 0201271,0201423,etc |
| photodissociation region | PDR | 155 | 12 | 1.417372 | 0201471,0201060,etc |
| power density spectrum | PDS | 129 | 12 | 1.336343 | 0201531,0201300,etc |
| narrow field instruments | NFI | 39 | 12 | 1.166993 | 0201307,0201175,etc |
| smooth particle hydrodynamics | SPH | 172 | 12 | 1.667878 | 0202485,0202112,etc |
| hardness ratio | HR | 149 | 12 | 2.001427 | 0203070,0203335,etc |
| deutsche forschungsgemeinschaft | DFG | 15 | 12 | 1.000102 | 0203147,0203460,etc |
| optical transient | OT | 190 | 11 | 1.729921 | 0201322,0201246,etc |
| high energy transmission grating spectrometer | HETGS | 54 | 11 | 1.637291 | 0202333,0202304,etc |
| cold neutral medium | CNM | 536 | 11 | 1.820688 | 0202050,0202196,etc |
| narrow line seyfert 1 galaxy | NLS1 | 167 | 11 | 1.728833 | 0203439,0203425,etc |
| hertzsprung russell | HR | 45 | 11 | 1.000326 | 0203518,0203461,etc |
| power law | PO | 153 | 11 | 1.637761 | 0203175,0203174,etc |
| low energy transmission grating | LETG | 99 | 11 | 2.001059 | 0204159,0204237,etc |
| center for astrophysics | CfA | 38 | 11 | 1.181943 | 0204100,0204265,etc |
| very small array | VSA | 300 | 11 | 1.821202 | 0205385,0205367,etc |
| hubble deep field south | HDF-S | 120 | 10 | 1.201284 | 0201510,0201506,etc |
| short wavelength spectrometer | SWS | 111 | 10 | 1.302431 | 0201184,0201418,etc |
| press schechter | PS | 124 | 10 | 1.201485 | 0201115,0201490,etc |
| ultra luminous x ray source | ULX | 180 | 10 | 1.002791 | 0201058,0201230,etc |
| narrow line seyfert 1 | NLS1 | 115 | 10 | 1.402764 | 0202297,0202498,etc |
| x ray luminosity function | XLF | 232 | 10 | 1.702497 | 0203176,0203407,etc |
| berkeley illinois maryland association | BIMA | 152 | 10 | 1.801336 | 0204435,0204134,etc |
| particle physics and astronomy research council | PPARC | 15 | 10 | 1.000143 | 0207329,0207489,etc |
| uk astrophysical fluids facility | UKAFF | 11 | 10 | 1.000155 | 0208527,0208293,etc |
| turn off | TO | 108 | 9 | 1.224516 | 0201443,0201387,etc |
| carbon oxygen | CO | 41 | 9 | 1.444782 | 0201166,0201262,etc |
| particle mesh | PM | 83 | 9 | 1.445731 | 0201375,0201037,etc |
| greisen zatsepin kuzmin | GZK | 81 | 9 | 2.001328 | 0201212,0201257,etc |
| subdwarf b | sdB | 201 | 9 | 2.004079 | 0202212,0202177,etc |
| color magnitude | CMD | 76 | 9 | 1.334998 | 0203384,0203218,etc |
| high surface brightness | HSB | 129 | 9 | 1.222899 | 0204468,0204521,etc |
| metallicity distribution function | MDF | 141 | 9 | 1.446382 | 0206446,0206085,etc |
| hard x ray | HXR | 427 | 9 | 1.563091 | 0207361,0207217,etc |
| magnetohydrodynamical | MHD | 214 | 8 | 1.752837 | 0201083,0201195,etc |
| low surface brightness galaxies | LSB | 194 | 8 | 1.752328 | 0201193,0201352,etc |
| double degenerate | DD | 175 | 8 | 1.628804 | 0201220,0201411,etc |
| chandra x ray center | CXC | 16 | 8 | 1.000252 | 0202202,0202139,etc |
| broad emission line region | BLR | 83 | 8 | 1.501152 | 0203239,0203359,etc |
| orion nebula cluster | ONC | 246 | 8 | 2.000862 | 0203384,0203316,etc |
| position velocity | P-V | 158 | 8 | 2.001895 | 0203024,0203188,etc |
| the red giant branch | TRGB | 159 | 8 | 1.627777 | 0204528,0204192,etc |
| equations of state | EOS | 90 | 8 | 1.626494 | 0205343,0205077,etc |
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