| active galactic nucleus | AGN | 891 | 41 | 1.00517 | 0501195,0501578,etc |
| interstellar medium | ISM | 261 | 35 | 1.001311 | 0501168,0501274,etc |
| spectral energy distribution | SED | 360 | 30 | 2.002041 | 0501305,0501265,etc |
| cosmic microwave background | CMB | 376 | 29 | 2.002364 | 0501581,0501531,etc |
| sloan digital sky survey | SDSS | 492 | 27 | 2.003303 | 0501178,0501531,etc |
| initial mass function | IMF | 210 | 23 | 1.002888 | 0501168,0501538,etc |
| point spread function | PSF | 273 | 23 | 1.001739 | 0501432,0501501,etc |
| cold dark matter | CDM | 256 | 23 | 1.001681 | 0501233,0501268,etc |
| star formation rate | SFR | 336 | 22 | 2.002592 | 0501415,0501095,etc |
| nasa/ipac extragalactic database | NED | 51 | 20 | 1.000301 | 0501347,0501525,etc |
| very large array | VLA | 166 | 19 | 1.002015 | 0501095,0501230,etc |
| signal to noise ratio | S/N | 97 | 17 | 1.001363 | 0501269,0501168,etc |
| equivalent width | EW | 256 | 17 | 1.002214 | 0501247,0501213,etc |
| supernova | SN | 1135 | 16 | 2.013242 | 0501168,0501300,etc |
| signal to noise | S/N | 59 | 16 | 1.000576 | 0501018,0501228,etc |
| supernova remnant | SNR | 221 | 15 | 2.003933 | 0501300,0501301,etc |
| low mass x ray binary | LMXB | 220 | 15 | 1.006445 | 0501472,0501481,etc |
| cosmic microwave background radiation | CMBR | 117 | 14 | 1.003092 | 0501581,0501130,etc |
| ultraviolet | UV | 272 | 13 | 1.00373 | 0501036,0501100,etc |
| asymptotic giant branch | AGB | 363 | 12 | 1.003244 | 0501168,0501247,etc |
| neutron star | NS | 206 | 12 | 2.006599 | 0501472,0501481,etc |
| intergalactic medium | IGM | 219 | 12 | 2.003132 | 0501543,0501382,etc |
| white dwarf | WD | 292 | 11 | 1.007357 | 0501248,0501168,etc |
| astrophysical research consortium | ARC | 13 | 11 | 1.000145 | 0501178,0501042,etc |
| max planck institute for astronomy | MPIA | 11 | 11 | 1.000065 | 0501178,0501042,etc |
| max planck institute for astrophysics | MPA | 11 | 11 | 1.000065 | 0501178,0501042,etc |
| black hole | BH | 424 | 11 | 2.007601 | 0501456,0501472,etc |
| gamma ray burst | GRB | 580 | 11 | 2.008987 | 0501192,0501375,etc |
| red giant branch | RGB | 181 | 11 | 2.002766 | 0501633,0501083,etc |
| intracluster medium | ICM | 106 | 10 | 1.002905 | 0501149,0501175,etc |
| field of view | FOV | 34 | 10 | 1.000596 | 0501438,0501219,etc |
| intra cluster medium | ICM | 65 | 9 | 1.000955 | 0501432,0501658,etc |
| infrared | IR | 149 | 9 | 2.004107 | 0501595,0501537,etc |
| color magnitude diagram | CMD | 106 | 9 | 2.001743 | 0501052,0501145,etc |
| dark matter | DM | 296 | 9 | 2.005893 | 0501149,0501635,etc |
| hubble space telescope | HST | 52 | 9 | 1.000618 | 0501531,0501543,etc |
| luminosity function | LF | 140 | 9 | 2.002669 | 0501219,0501233,etc |
| very long baseline array | VLBA | 80 | 9 | 1.002206 | 0501097,0501347,etc |
| smoothed particle hydrodynamics | SPH | 55 | 9 | 1.000729 | 0501638,0501622,etc |
| kolmogorov smirnov | K-S | 33 | 9 | 1.000342 | 0501505,0501550,etc |
| far infrared | FIR | 108 | 9 | 2.001307 | 0501411,0501053,etc |
| equation of state | EOS | 68 | 9 | 1.001531 | 0501367,0501613,etc |
| star formation | SF | 118 | 8 | 1.003202 | 0501168,0501149,etc |
| main sequence | MS | 134 | 8 | 2.00306 | 0501481,0501633,etc |
| warm hot intergalactic medium | WHIM | 175 | 8 | 2.003809 | 0501543,0501054,etc |
| quasi periodic oscillation | QPO | 200 | 8 | 2.005951 | 0501186,0501277,etc |
| inverse compton | IC | 58 | 8 | 2.001344 | 0501265,0501391,etc |
| full width at half maximum | FWHM | 58 | 8 | 2.000863 | 0501059,0501257,etc |
| near infrared | NIR | 39 | 8 | 1.000447 | 0501188,0501088,etc |
| globular cluster | GC | 302 | 7 | 2.006142 | 0501481,0501230,etc |
| small magellanic cloud | SMC | 92 | 7 | 2.002544 | 0501398,0501247,etc |
| very large telescope | VLT | 63 | 7 | 2.000478 | 0501247,0501259,etc |
| planetary nebula | PN | 102 | 7 | 2.003642 | 0501247,0501658,etc |
| power density spectra | PDS | 41 | 7 | 2.001274 | 0501186,0501306,etc |
| green bank telescope | GBT | 52 | 7 | 1.001672 | 0501230,0501550,etc |
| pre main sequence | PMS | 123 | 7 | 2.003561 | 0501210,0501223,etc |
| cataclysmic variable | CV | 93 | 6 | 2.003547 | 0501108,0501178,etc |
| local thermodynamic equilibrium | LTE | 61 | 6 | 1.001586 | 0501168,0501225,etc |
| cosmic ray | CR | 146 | 6 | 1.011096 | 0501274,0501537,etc |
| proportional counter array | PCA | 35 | 6 | 2.001057 | 0501285,0501297,etc |
| horizontal branch | HB | 208 | 6 | 2.006746 | 0501481,0501633,etc |
| zero age main sequence | ZAMS | 34 | 6 | 2.000487 | 0501481,0501563,etc |
| adaptive mesh refinement | AMR | 17 | 6 | 1.000302 | 0501160,0501175,etc |
| advanced camera for surveys | ACS | 130 | 6 | 2.002752 | 0501633,0501475,etc |
| wide field camera | WFC | 61 | 6 | 2.001182 | 0501375,0501475,etc |
| high mass x ray binary | HMXB | 75 | 6 | 2.00135 | 0501305,0501411,etc |
| giant meter radio telescope | GMRT | 23 | 5 | 1.001761 | 0501285,0501297,etc |
| rotation measure | RM | 39 | 5 | 2.001312 | 0501013,0501222,etc |
| space telescope imaging spectrograph | STIS | 75 | 5 | 2.001071 | 0501481,0501382,etc |
| power density spectrum | PDS | 23 | 5 | 1.001805 | 0501297,0501277,etc |
| polycyclic aromatic hydrocarbon | PAH | 134 | 5 | 2.002813 | 0501513,0501180,etc |
| friedmann robertson walker | FRW | 28 | 5 | 1.000534 | 0501396,0501652,etc |
| collisional ionization equilibrium | CIE | 15 | 5 | 2.000504 | 0501543,0501561,etc |
| 2df galaxy redshift survey | 2dFGRS | 100 | 5 | 1.001602 | 0501183,0501174,etc |
| lyman break galaxy | LBG | 84 | 5 | 2.000664 | 0501382,0501259,etc |
| very high energy | VHE | 31 | 5 | 2.001623 | 0501576,0501199,etc |
| intermediate mass black hole | IMBH | 102 | 5 | 1.005906 | 0501625,0501306,etc |
| ultra luminous x ray source | ULX | 979 | 5 | 2.010116 | 0501306,0501242,etc |
| large scale structure | LSS | 28 | 5 | 1.000286 | 0501590,0501399,etc |
| wide field planetary camera 2 | WFPC2 | 89 | 5 | 2.001679 | 0501341,0501083,etc |
| magneto rotational instability | MRI | 30 | 5 | 1.001306 | 0501468,0501198,etc |
| low surface brightness | LSB | 101 | 5 | 1.00359 | 0501406,0501567,etc |
| european southern observatory | ESO | 22 | 5 | 1.000323 | 0501433,0501159,etc |
| nordic optical telescope | NOT | 10 | 5 | 1.000196 | 0501253,0501120,etc |
| ultra high energy cosmic rays | UHECR | 54 | 4 | 2.002101 | 0501195,0501425,etc |
| two component advective flow | TCAF | 10 | 4 | 2.000629 | 0501281,0501284,etc |
| uniform disk | UD | 18 | 4 | 1.000344 | 0501261,0501420,etc |
| very large telescope interferometer | VLTI | 71 | 4 | 2.003387 | 0501261,0501532,etc |
| ultra high energy cosmic ray | UHECR | 75 | 4 | 2.003859 | 0501274,0501581,etc |
| magnetohydrodynamic | MHD | 36 | 4 | 1.002366 | 0501538,0501455,etc |
| rossi x ray timing explorer | RXTE | 24 | 4 | 1.001406 | 0501285,0501186,etc |
| colour magnitude diagram | CMD | 66 | 4 | 2.002184 | 0501481,0501511,etc |
| large magellanic cloud | LMC | 192 | 4 | 2.004285 | 0501398,0501247,etc |
| red supergiant | RSG | 56 | 4 | 2.00067 | 0501247,0501341,etc |
| infrared space observatory | ISO | 28 | 4 | 1.001107 | 0501513,0501180,etc |
| indian space research organization | ISRO | 4 | 4 | 1.000446 | 0501283,0501292,etc |
| supermassive black hole | SMBH | 40 | 4 | 2.002009 | 0501501,0501257,etc |
| quantum efficiency | QE | 6 | 4 | 1.000515 | 0501501,0501411,etc |
| piecewise parabolic method | PPM | 30 | 4 | 2.000579 | 0501175,0501547,etc |
| photodissociation region | PDR | 171 | 4 | 2.005142 | 0501034,0501536,etc |
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