| flux rope | 224 | 17 | 13.938 | 0.008374 | 2009.00327,2009.00861,etc |
| globular cluster | 281 | 71 | 3.986 | 0.00567 | 2009.00010,2009.00018,etc |
| primordial gravitational wave | 40 | 14 | 3.0 | 0.005209 | 2009.03611,2009.04418,etc |
| outer disc | 172 | 23 | 7.773 | 0.004823 | 2009.00562,2009.00639,etc |
| velocity shift | 50 | 18 | 2.882 | 0.004477 | 2009.00004,2009.01112,etc |
| small dust grain | 67 | 15 | 4.643 | 0.00444 | 2009.00151,2009.01888,etc |
| tidal tail | 114 | 18 | 6.647 | 0.004064 | 2009.01261,2009.01856,etc |
| neutron star merger | 62 | 26 | 2.44 | 0.00394 | 2009.00078,2009.02342,etc |
| thick disc | 139 | 19 | 7.5 | 0.003734 | 2009.00562,2009.00639,etc |
| mass flux | 93 | 21 | 4.6 | 0.003727 | 2009.00547,2009.00627,etc |
| water vapor | 63 | 18 | 3.529 | 0.003637 | 2009.02321,2009.03955,etc |
| dark photon | 131 | 13 | 10.833 | 0.00361 | 2009.03828,2009.03899,etc |
| solar wind | 339 | 41 | 8.45 | 0.003553 | 2009.00327,2009.00627,etc |
| dark sector | 123 | 23 | 5.455 | 0.003503 | 2009.00245,2009.03286,etc |
| thick disk | 147 | 26 | 5.84 | 0.003499 | 2009.01789,2009.02104,etc |
| black hole | 1410 | 251 | 5.636 | 0.003452 | 2009.00013,2009.00060,etc |
| coronal temperature | 40 | 12 | 2.091 | 0.003436 | 2009.00132,2009.01958,etc |
| Doppler velocity | 69 | 12 | 6.091 | 0.003401 | 2009.00861,2009.02340,etc |
| habitable zone | 116 | 23 | 5.045 | 0.00337 | 2009.00144,2009.01259,etc |
| first-order phase transition | 46 | 13 | 3.5 | 0.003364 | 2009.01539,2009.05719,etc |
| cosmic variance | 243 | 42 | 5.902 | 0.003325 | 2009.00367,2009.01189,etc |
| intrinsic absorption | 69 | 13 | 5.667 | 0.003306 | 2009.00125,2009.03232,etc |
| phase transition | 286 | 56 | 5.164 | 0.003089 | 2009.00006,2009.00334,etc |
| adiabatic cooling | 32 | 13 | 2.5 | 0.002991 | 2009.01259,2009.03899,etc |
| carbonaceous grain | 107 | 12 | 9.636 | 0.002973 | 2009.00018,2009.01895,etc |
| variable star | 176 | 41 | 4.1 | 0.002933 | 2009.01085,2009.01242,etc |
| exponential cut-off | 67 | 17 | 4.125 | 0.002932 | 2009.00125,2009.03093,etc |
| convection zone | 133 | 19 | 3.333 | 0.002916 | 2009.00861,2009.01248,etc |
| dark energy | 270 | 79 | 3.449 | 0.002911 | 2009.00006,2009.00245,etc |
| magnetic field | 2580 | 327 | 7.911 | 0.002898 | 2009.00004,2009.00007,etc |
| polar field | 92 | 12 | 8.182 | 0.002894 | 2009.00730,2009.00861,etc |
| first order phase transition | 31 | 12 | 2.727 | 0.002851 | 2009.00006,2009.09754,etc |
| upper atmosphere | 102 | 33 | 3.156 | 0.002844 | 2009.00861,2009.01372,etc |
| SNe Ia | 254 | 25 | 9.25 | 0.002805 | 2009.01242,2009.02135,etc |
| dark matter | 805 | 200 | 4.03 | 0.002733 | 2009.00004,2009.00005,etc |
| Bayes factor | 67 | 19 | 3.444 | 0.002694 | 2009.00613,2009.01085,etc |
| calibration error | 78 | 12 | 3.818 | 0.002647 | 2009.04618,2009.05614,etc |
| dark matter particle | 144 | 48 | 3.021 | 0.002645 | 2009.00004,2009.00013,etc |
| fundamental theory | 23 | 11 | 2.2 | 0.002635 | 2009.01200,2009.05719,etc |
| coronal hole | 117 | 21 | 5.75 | 0.002618 | 2009.00004,2009.00376,etc |
| quiet Sun | 68 | 20 | 3.526 | 0.002611 | 2009.00004,2009.00861,etc |
| outer orbit | 90 | 11 | 8.8 | 0.002582 | 2009.00178,2009.03378,etc |
| tidal effect | 67 | 28 | 2.407 | 0.00257 | 2009.00010,2009.00021,etc |
| reddening map | 52 | 12 | 4.636 | 0.00256 | 2009.00018,2009.03926,etc |
| X-ray flare | 50 | 12 | 4.455 | 0.002549 | 2009.01259,2009.02263,etc |
| light curve | 1752 | 233 | 7.526 | 0.002532 | 2009.00030,2009.00037,etc |
| current sheet | 86 | 27 | 3.231 | 0.00251 | 2009.00132,2009.00627,etc |
| binary star system | 35 | 13 | 2.833 | 0.002506 | 2009.00144,2009.03476,etc |
| spiral galaxy | 209 | 69 | 3.029 | 0.002478 | 2009.00276,2009.00616,etc |
| mass gap | 107 | 24 | 4.609 | 0.002477 | 2009.01728,2009.03204,etc |
| angular power spectrum | 60 | 17 | 3.5 | 0.002465 | 2009.00021,2009.01189,etc |
| ionization rate | 50 | 17 | 2.625 | 0.002457 | 2009.00431,2009.01259,etc |
| primordial curvature perturbation | 35 | 11 | 3.4 | 0.002422 | 2009.00006,2009.01149,etc |
| cosmic string | 67 | 18 | 3.471 | 0.002411 | 2009.00334,2009.06555,etc |
| radio power | 92 | 15 | 6.5 | 0.002387 | 2009.00639,2009.01539,etc |
| gauge field | 128 | 15 | 9.071 | 0.002386 | 2009.03828,2009.08722,etc |
| ejecta mass | 83 | 26 | 3.24 | 0.002384 | 2009.01157,2009.01240,etc |
| pulse profile | 135 | 29 | 3.464 | 0.002378 | 2009.00030,2009.00031,etc |
| binding energy | 161 | 36 | 4.486 | 0.002375 | 2009.01335,2009.02340,etc |
| power spectrum | 1002 | 162 | 6.211 | 0.00237 | 2009.00016,2009.00037,etc |
| quark matter | 103 | 20 | 5.105 | 0.002366 | 2009.00942,2009.03769,etc |
| white dwarf | 167 | 51 | 3.32 | 0.002314 | 2009.00193,2009.00639,etc |
| accretion column | 74 | 12 | 6.636 | 0.002306 | 2009.00631,2009.00634,etc |
| instability strip | 69 | 15 | 4.857 | 0.002299 | 2009.00730,2009.02340,etc |
| neutron star | 800 | 184 | 4.361 | 0.002298 | 2009.00030,2009.00078,etc |
| water ice | 95 | 19 | 5.222 | 0.002266 | 2009.00957,2009.02907,etc |
| transmission spectrum | 114 | 23 | 4.909 | 0.002262 | 2009.00687,2009.03529,etc |
| Einstein ring | 56 | 11 | 4.8 | 0.002212 | 2009.00631,2009.00780,etc |
| dispersion relation | 64 | 24 | 2.739 | 0.00221 | 2009.02434,2009.03828,etc |
| time delay | 283 | 66 | 4.338 | 0.002209 | 2009.00004,2009.00078,etc |
| low mass star | 58 | 25 | 2.375 | 0.002161 | 2009.01844,2009.02329,etc |
| ambipolar diffusion | 49 | 13 | 4.0 | 0.002157 | 2009.00547,2009.01268,etc |
| nuclear star cluster | 41 | 14 | 2.538 | 0.002145 | 2009.00178,2009.01861,etc |
| scalar field | 447 | 77 | 5.868 | 0.002141 | 2009.00245,2009.01149,etc |
| pebble accretion | 145 | 15 | 10.0 | 0.002133 | 2009.02321,2009.02907,etc |
| peak energy | 56 | 17 | 3.438 | 0.002125 | 2009.03550,2009.03913,etc |
| dust grain | 440 | 99 | 4.449 | 0.002124 | 2009.00018,2009.00137,etc |
| azimuthal angle | 101 | 34 | 3.03 | 0.002122 | 2009.00631,2009.00962,etc |
| rise time | 60 | 18 | 3.471 | 0.002105 | 2009.01242,2009.01853,etc |
| sky localization | 37 | 12 | 3.091 | 0.002105 | 2009.01825,2009.03476,etc |
| active region | 334 | 70 | 4.826 | 0.002087 | 2009.00004,2009.00132,etc |
| phase angle | 56 | 13 | 4.583 | 0.002074 | 2009.00639,2009.00957,etc |
| gamma ray | 129 | 29 | 4.571 | 0.002073 | 2009.00021,2009.00078,etc |
| thermal energy | 144 | 66 | 2.185 | 0.002071 | 2009.00004,2009.00007,etc |
| Hubble parameter | 194 | 61 | 3.217 | 0.002055 | 2009.00006,2009.00245,etc |
| electric field | 212 | 41 | 5.1 | 0.002039 | 2009.00631,2009.00861,etc |
| jet speed | 74 | 12 | 6.636 | 0.002021 | 2009.00358,2009.00639,etc |
| inner disc | 130 | 28 | 4.704 | 0.00201 | 2009.00562,2009.00639,etc |
| host galaxy | 741 | 171 | 4.324 | 0.00198 | 2009.00010,2009.00021,etc |
| thermal evolution | 69 | 20 | 3.579 | 0.001977 | 2009.00016,2009.03919,etc |
| magnetic pole | 51 | 19 | 2.778 | 0.001962 | 2009.00631,2009.00634,etc |
| NANOGrav signal | 39 | 12 | 3.182 | 0.001953 | 2009.06555,2009.06607,etc |
| Jeans length | 38 | 11 | 3.7 | 0.00195 | 2009.01268,2009.01888,etc |
| transit model | 32 | 12 | 2.818 | 0.001949 | 2009.02330,2009.02332,etc |
| parent sample | 112 | 24 | 4.826 | 0.001946 | 2009.00060,2009.00676,etc |
| solar-like star | 38 | 14 | 2.692 | 0.001934 | 2009.00547,2009.00692,etc |
| satellite galaxy | 246 | 54 | 3.849 | 0.001924 | 2009.00005,2009.00010,etc |
| control sample | 107 | 23 | 4.818 | 0.001919 | 2009.00733,2009.00962,etc |
| astrophysical object | 66 | 33 | 2.031 | 0.001914 | 2009.00007,2009.00547,etc |
| star particle | 172 | 32 | 5.516 | 0.001914 | 2009.00013,2009.00616,etc |
|