| 1 | binary neutron star | BNS | 211 | 12 | 2.004724 | 2001.00821,2001.01462,etc |
| 2 | friedmann lema^{i}tre robertson walker | FLRW | 50 | 11 | 1.000298 | 2001.00031,2001.00394,etc |
| 3 | anti de sitter | AdS | 194 | 11 | 2.005199 | 2001.00615,2001.01591,etc |
| 4 | effective one body | EOB | 194 | 10 | 2.002804 | 2001.00352,2001.00821,etc |
| 5 | innermost stable circular orbit | ISCO | 33 | 8 | 2.000827 | 2001.00863,2001.02986,etc |
| 6 | friedmann lemaitre robertson walker | FLRW | 29 | 8 | 1.00048 | 2001.00935,2001.02474,etc |
| 7 | markov chain monte carlo | MCMC | 20 | 8 | 1.000242 | 2001.01747,2001.08745,etc |
| 8 | quantum field theory | QFT | 39 | 8 | 1.00031 | 2001.02543,2001.04993,etc |
| 9 | einstein telescope | ET | 86 | 7 | 2.002878 | 2001.00279,2001.09553,etc |
| 10 | post newtonian | PN | 157 | 7 | 1.003579 | 2001.00352,2001.06763,etc |
| 11 | tolman oppenheimer volkoff | TOV | 17 | 7 | 1.000221 | 2001.00863,2001.06644,etc |
| 12 | binary black hole | BBH | 138 | 7 | 2.003955 | 2001.01462,2001.03571,etc |
| 13 | quasinormal mode | QNM | 112 | 7 | 2.00238 | 2001.01591,2001.06100,etc |
| 14 | friedmann lema^itre robertson walker | FLRW | 56 | 6 | 1.000859 | 2001.00154,2001.00556,etc |
| 15 | centre national de recherche scientifique | CNRS | 6 | 6 | 1.000143 | 2001.00821,2001.08411,etc |
| 16 | friedmann robertson walker | FRW | 16 | 6 | 1.000354 | 2001.00825,2001.04979,etc |
| 17 | quasi normal mode | QNM | 89 | 6 | 2.002597 | 2001.00863,2001.01301,etc |
| 18 | de sitter | dS | 136 | 6 | 2.007722 | 2001.01478,2001.02451,etc |
| 19 | event horizon telescope | EHT | 81 | 5 | 1.002862 | 2001.00041,2001.00460,etc |
| 20 | arnowitt deser misner | ADM | 13 | 5 | 1.000448 | 2001.00556,2001.08833,etc |
| 21 | friedmann lema^tre robertson walker | FLRW | 14 | 5 | 1.000209 | 2001.02016,2001.02414,etc |
| 22 | mathematical research impact centric support scheme | MATRICS | 5 | 5 | 1.000052 | 2001.02414,2001.09885,etc |
| 23 | science and engineering research board | SERB | 5 | 5 | 1.000052 | 2001.02414,2001.09885,etc |
| 24 | extreme mass ratio inspiral | EMRI | 36 | 5 | 1.002259 | 2001.03478,2001.04979,etc |
| 25 | inspiral merger ringdown | IMR | 30 | 5 | 1.00025 | 2001.09553,2001.09793,etc |
| 26 | loop quantum cosmology | LQC | 94 | 4 | 2.006087 | 2001.00031,2001.02918,etc |
| 27 | zero angular momentum observer | ZAMO | 29 | 4 | 2.000479 | 2001.00460,2001.04979,etc |
| 28 | conformal field theory | CFT | 91 | 4 | 2.002963 | 2001.00615,2001.09553,etc |
| 29 | istituto nazionale della fisica nucleare | INFN | 4 | 4 | 1.000137 | 2001.08411,2001.10914,etc |
| 30 | numerical relativity | NR | 176 | 4 | 2.002992 | 2001.09082,2001.10914,etc |
| 31 | effective field theory | EFT | 46 | 4 | 2.001366 | 2001.10042,2001.00043,etc |
| 32 | barcelona supercomputing center | BSC | 8 | 4 | 1.000045 | 2001.10897,2001.10914,etc |
| 33 | red española de supercomputación | RES | 8 | 4 | 1.000045 | 2001.10897,2001.10914,etc |
| 34 | advanced ligo | aLIGO | 8 | 4 | 1.000866 | 2001.05392,2001.07891,etc |
| 35 | cosmic explorer | CE | 85 | 4 | 2.005496 | 2001.05393,2001.07619,etc |
| 36 | null energy condition | NEC | 62 | 3 | 1.002257 | 2001.00010,2001.00816,etc |
| 37 | general relativistic magnetohydrodynamic | GRMHD | 19 | 3 | 1.000351 | 2001.00041,2001.09153,etc |
| 38 | science and technology facilities council | STFC | 4 | 3 | 1.000011 | 2001.00242,2001.06490,etc |
| 39 | wheeler dewitt | WDW | 25 | 3 | 1.001051 | 2001.00556,2001.06453,etc |
| 40 | two dimensional | 2D | 15 | 3 | 1.001051 | 2001.00615,2001.04979,etc |
| 41 | three dimensional | 3D | 10 | 3 | 1.000321 | 2001.00615,2001.04979,etc |
| 42 | natural sciences and engineering research council of canada | NSERC | 3 | 3 | 1.000065 | 2001.00821,2001.01301,etc |
| 43 | post keplerian | PK | 21 | 3 | 1.002802 | 2001.00863,2001.04122,etc |
| 44 | neutron star black hole | NS-BH | 16 | 3 | 2.000451 | 2001.01462,2001.07891,etc |
| 45 | gauss bonnet | GB | 158 | 3 | 2.005078 | 2001.01642,2001.02074,etc |
| 46 | supernovae type ia | SNeIa | 5 | 3 | 1.000088 | 2001.02986,2001.02180,etc |
| 47 | dirac born infeld | DBI | 80 | 3 | 2.003717 | 2001.03014,2001.07920,etc |
| 48 | breitenlohner freedman | BF | 5 | 3 | 1.00024 | 2001.08358,2001.01478,etc |
| 49 | natural science foundation of china | NSFC | 3 | 3 | 1.000191 | 2001.08391,2001.09287,etc |
| 50 | equations of state | EoS | 17 | 3 | 2.000505 | 2001.08504,2001.09153,etc |
| 51 | square kilometre array | SKA | 46 | 3 | 2.002898 | 2001.09553,2001.05393,etc |
| 52 | yang mills | YM | 33 | 3 | 1.002877 | 2001.02109,2001.03947,etc |
| 53 | european research council | ERC | 4 | 3 | 1.000118 | 2001.06016,2001.09149,etc |