Topic ranking | Key words | Subject number | Academic output | Annual growth rate (%) | Normalization affects factors | theme Saliency |
1 | galaxies; mass; quiescent galaxies | T.574 | 115 | −58.1 | 3.24 | 99.585 |
2 | supernovae; explosion; circumstellar medium | T.4164 | 95 | 60.5 | 2.63 | 98.83 |
3 | supernovae; explosion; maximum light | T.3039 | 78 | −51.3 | 1.88 | 96.123 |
4 | planet; planets; planet candidates | T.131 | 77 | −19 | 3.16 | 99.755 |
5 | Mercury (planet); mercury (metal); smooth plains | T.7613 | 76 | −72.1 | 2.38 | 89.446 |
6 | mass; stars; L/T transition | T.2748 | 74 | 157.6 | 1.32 | 95.774 |
7 | quasars; active galactic nuclei; broad absorption | T.241 | 64 | −68.8 | 2.59 | 99.211 |
8 | debris; disks; differential imaging | T.4806 | 59 | −61 | 2.12 | 97.214 |
9 | galaxies; luminosity; high-redshift galaxies | T.5525 | 55 | −56.9 | 3.5 | 98.603 |
10 | high pressure; Superconductivity; solid hydrogen | T.12095 | 52 | −50.3 | 2.11 | 98.038 |