| 1 | narrow line seyfert 1 galaxy | NLS1 | 242 | 11 | 2.005655 | 0005132,0005126,etc |
| 2 | narrow line seyfert 1 | NLS1 | 180 | 10 | 2.004923 | 0005166,0005605,etc |
| 3 | high resolution imager | HRI | 137 | 9 | 1.001391 | 0005605,0005256,etc |
| 4 | low surface brightness | LSB | 161 | 7 | 2.004564 | 0005231,0005210,etc |
| 5 | signal to noise | S/N | 48 | 7 | 1.000488 | 0005609,0005049,etc |
| 6 | wolf rayet | WR | 91 | 6 | 2.006563 | 0005056,0005179,etc |
| 7 | proportional counter array | PCA | 68 | 6 | 2.001059 | 0005398,0005489,etc |
| 8 | inverse compton | IC | 60 | 6 | 2.002033 | 0005066,0005444,etc |
| 9 | all sky monitor | ASM | 61 | 6 | 1.001897 | 0005066,0005489,etc |
| 10 | space telescope imaging spectrograph | STIS | 18 | 5 | 2.000842 | 0005367,0005398,etc |
| 11 | standard cold dark matter | SCDM | 7 | 5 | 1.000384 | 0005246,0005022,etc |
| 12 | rosat all sky survey | RASS | 30 | 5 | 1.002813 | 0005167,0005157,etc |
| 13 | full width half maximum | FWHM | 19 | 5 | 1.000364 | 0005049,0005032,etc |
| 14 | faint object spectrograph | FOS | 119 | 4 | 1.002855 | 0005530,0005585,etc |
| 15 | compact steep spectrum | CSS | 73 | 4 | 2.001685 | 0005240,0005035,etc |
| 16 | particle mesh | PM | 73 | 4 | 2.003007 | 0005095,0005502,etc |
| 17 | proportional counter unit | PCU | 36 | 4 | 1.000305 | 0005497,0005496,etc |
| 18 | kolmogorov smirnov | K-S | 7 | 4 | 1.000131 | 0005086,0005492,etc |
| 19 | soft gamma ray repeater | SGR | 162 | 4 | 2.009363 | 0005472,0005211,etc |
| 20 | narrow line seyfert 1 galaxies | NLSy1 | 107 | 4 | 2.009123 | 0005567,0005155,etc |
| 21 | synchrotron self compton | SSC | 16 | 4 | 2.000385 | 0005255,0005263,etc |
| 22 | tully fisher | TF | 18 | 3 | 2.001229 | 0005450,0005484,etc |
| 23 | ministry for university and research | MURST | 3 | 3 | 1.000306 | 0005126,0005436,etc |
| 24 | spherical overdensity | SO | 16 | 3 | 1.00056 | 0005260,0005358,etc |
| 25 | deep survey | DS | 22 | 3 | 1.000679 | 0005062,0005398,etc |
| 26 | cam interactive analysis | CIA | 7 | 3 | 1.000127 | 0005272,0005083,etc |
| 27 | galactic black hole candidates | GBHC | 17 | 3 | 2.000757 | 0005523,0005603,etc |
| 28 | power law | PL | 36 | 3 | 1.001636 | 0005497,0005169,etc |
| 29 | ordinary differential equation | ODE | 9 | 3 | 1.000128 | 0005278,0005102,etc |
| 30 | narrow field instruments | NFI | 7 | 3 | 1.000165 | 0005270,0005552,etc |
| 31 | broad emission line region | BELR | 10 | 3 | 1.00114 | 0005159,0005346,etc |
| 32 | time of arrival | TOA | 18 | 3 | 2.000142 | 0005389,0005561,etc |
| 33 | ghz peaked spectrum | GPS | 76 | 3 | 2.002219 | 0005209,0005035,etc |
| 34 | x ray luminosity function | XLF | 12 | 3 | 1.000514 | 0005197,0005348,etc |
| 35 | chandra interactive analysis of observations | CIAO | 3 | 3 | 1.00006 | 0005242,0005559,etc |
| 36 | integrated sachs wolfe | ISW | 29 | 3 | 1.000807 | 0005206,0005543,etc |
| 37 | sunyaev zel'dovich | SZ | 151 | 3 | 2.005024 | 0005206,0005287,etc |
| 38 | extreme ultraviolet explorer | EUVE | 43 | 3 | 2.003236 | 0005422,0005426,etc |