University, Subject, Country, Region, World
National Astronomical Observatory of Japan 73 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 31, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (870.053) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
astronomy
telescope
Metrics
H-Index
i10 Index
Citation Counts
81
250
24,078
* Total H IndexRankings
Ranking Based On Selection: 2
quantum optics
gravitational wave
non-linear optics
Metrics
H-Index
i10 Index
Citation Counts
80
136
83,151
* Total H IndexRankings
Ranking Based On Selection: 3
Astronomy
Origin of Life
Metrics
H-Index
i10 Index
Citation Counts
80
182
27,358
* Total H IndexRankings
Ranking Based On Selection: 4
Physics
Metrics
H-Index
i10 Index
Citation Counts
67
159
23,984
* Total H IndexRankings
Ranking Based On Selection: 5
Metrics
H-Index
i10 Index
Citation Counts
63
139
13,576
* Total H IndexRankings
Ranking Based On Selection: 6
Astronomy
Metrics
H-Index
i10 Index
Citation Counts
60
136
13,499
* Total H IndexRankings
Ranking Based On Selection: 7
Astrophysics
Metrics
H-Index
i10 Index
Citation Counts
58
180
13,037
* Total H IndexRankings
Ranking Based On Selection: 8
astronomy
exoplanets
planet formation
infrared/radio observations
Metrics
H-Index
i10 Index
Citation Counts
53
106
8,420
* Total H IndexRankings
Ranking Based On Selection: 9
Astronomy
Metrics
H-Index
i10 Index
Citation Counts
51
127
9,016
* Total H IndexRankings
Ranking Based On Selection: 10
Theoretical Astronomy
Simulation Astrophysics
Metrics
H-Index
i10 Index
Citation Counts
51
107
7,041
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* Total H IndexRankings
Ranking Based On Selection: 11
Astrophysics
Metrics
H-Index
i10 Index
Citation Counts
48
91
6,761
* Total H IndexRankings
Ranking Based On Selection: 12
Solar Physics
Astrophysics
Magnetohydrodynamics
Metrics
H-Index
i10 Index
Citation Counts
48
135
9,541
* Total H IndexRankings
Ranking Based On Selection: 13
radioastronomy astrobiology astrochemistry database
Metrics
H-Index
i10 Index
Citation Counts
47
99
7,849
* Total H IndexRankings
Ranking Based On Selection: 14
General Relativity
Gravitation
Quantum Measurement Theory
Metrics
H-Index
i10 Index
Citation Counts
45
81
15,130
* Total H IndexRankings
Ranking Based On Selection: 15
Astronomy
Astrophysics
Metrics
H-Index
i10 Index
Citation Counts
45
126
8,180
* Total H IndexRankings
Ranking Based On Selection: 16
天文学
Metrics
H-Index
i10 Index
Citation Counts
45
132
6,360
* Total H IndexRankings
Ranking Based On Selection: 17
Exoplanet
Planet formation
Planet atmosphere
Planet interior
Metrics
H-Index
i10 Index
Citation Counts
42
79
6,151
* Total H IndexRankings
Ranking Based On Selection: 18
Astronomy
Physics
Metrics
H-Index
i10 Index
Citation Counts
41
125
6,356
* Total H IndexRankings
Ranking Based On Selection: 19
Gamma Ray Burst
Metrics
H-Index
i10 Index
Citation Counts
40
86
6,324
* Total H IndexRankings
Ranking Based On Selection: 20
Supermassive Black Hole
Galaxy Evolution
Co-evolution
Metrics
H-Index
i10 Index
Citation Counts
40
85
4,593
* Total H IndexRankings
Ranking Based On Selection: 21
太陽物理学、プラズマ物理学、電波天文学、X線天文学
Metrics
H-Index
i10 Index
Citation Counts
40
79
9,784
* Total H IndexRankings
Ranking Based On Selection: 22
Celestial Mechanics
General Relativity
Geodesy
Numerical Analysis
Metrics
H-Index
i10 Index
Citation Counts
38
152
7,389
* Total H IndexRankings
Ranking Based On Selection: 23
Planet formation
Metrics
H-Index
i10 Index
Citation Counts
37
64
3,835
* Total H IndexRankings
Ranking Based On Selection: 24
Radio Astronomy
Star Formation
Radio Instrumentation
Polarization
Magnetic Fields
Metrics
H-Index
i10 Index
Citation Counts
36
64
4,092
* Total H IndexRankings
Ranking Based On Selection: 25
spectroscopy
solid-state physics
scattering
general relativity
Metrics
H-Index
i10 Index
Citation Counts
35
50
10,401
Masanori Iye
Metrics
H-Index
i10-Index
Citation Counts
81
250
24,078
Matteo Leonardi
Metrics
H-Index
i10-Index
Citation Counts
80
136
83,151
quantum optics
gravitational wave
non-linear optics
Saku Tsuneta
Metrics
H-Index
i10-Index
Citation Counts
80
182
27,358
Yoichi Aso
Metrics
H-Index
i10-Index
Citation Counts
67
159
23,984
Matsuda Yuichi
Metrics
H-Index
i10-Index
Citation Counts
63
139
13,576
Kazuhiro Sekiguchi
Metrics
H-Index
i10-Index
Citation Counts
60
136
13,499
Imanishi Masatoshi
Metrics
H-Index
i10-Index
Citation Counts
58
180
13,037
Misato Fukagawa
Metrics
H-Index
i10-Index
Citation Counts
53
106
8,420
astronomy
exoplanets
planet formation
infrared/radio observations
Erik Muller
Metrics
H-Index
i10-Index
Citation Counts
51
127
9,016
Kohji Tomisaka
Metrics
H-Index
i10-Index
Citation Counts
51
107
7,041
Theoretical Astronomy
Simulation Astrophysics
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Takiwaki Tomoya
Metrics
H-Index
i10-Index
Citation Counts
48
91
6,761
Takashi Sakurai
Metrics
H-Index
i10-Index
Citation Counts
48
135
9,541
Solar Physics
Astrophysics
Magnetohydrodynamics
Masatoshi Ohishi
Metrics
H-Index
i10-Index
Citation Counts
47
99
7,849
Kouji Nakamura
Metrics
H-Index
i10-Index
Citation Counts
45
81
15,130
General Relativity
Gravitation
Quantum Measurement Theory
Takashi J Moriya
Metrics
H-Index
i10-Index
Citation Counts
45
126
8,180
Masao Saito
Metrics
H-Index
i10-Index
Citation Counts
45
132
6,360
Masahiro Ikoma
Metrics
H-Index
i10-Index
Citation Counts
42
79
6,151
Takashi Okada
Metrics
H-Index
i10-Index
Citation Counts
41
125
6,356
Maria Giovanna Dainotti
Metrics
H-Index
i10-Index
Citation Counts
40
86
6,324
Takuma Izumi
Metrics
H-Index
i10-Index
Citation Counts
40
85
4,593
Supermassive Black Hole
Galaxy Evolution
Co-evolution
Masumi Shimojo
Metrics
H-Index
i10-Index
Citation Counts
40
79
9,784
Toshio Fukushima
Metrics
H-Index
i10-Index
Citation Counts
38
152
7,389
Celestial Mechanics
General Relativity
Geodesy
Numerical Analysis
Akimasa Kataoka
Metrics
H-Index
i10-Index
Citation Counts
37
64
3,835
Charles Lh Hull
Metrics
H-Index
i10-Index
Citation Counts
36
64
4,092
Radio Astronomy
Star Formation
Radio Instrumentation
Polarization
Magnetic Fields
Simon Zeidler
Metrics
H-Index
i10-Index
Citation Counts
35
50
10,401
spectroscopy
solid-state physics
scattering
general relativity