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Research facility · Nanjing · China

Purple Mountain Observatory

In research, Purple Mountain Observatory stands highest in Astronomy and Astrophysics (#116 of 443 worldwide), Physical Sciences (#4,016 of 12,888 worldwide) and Physics and Astronomy (#1,198 of 1,646 worldwide), 2022–2025. Relative to its size it is most specialised in Astronomy and Astrophysics, Nuclear and High Energy Physics and Physics and Astronomy — Astronomy and Astrophysics is 108.0× its share of world research.

english.pmo.cas.cnROR OpenAlex
World rank, 2022–2025
#7,022
of 28,054 · #6,710 all time
Rank in China
#1,436
of 3,058
Research works
2.2k
▲ 19% vs 2013–17
Citations
29k
13.4 per fractional work
Top-10% rate
21.7%
record average 16.5%
Open access
48%
world 28%

What is Purple Mountain Observatory known for in research?

The fields where it stands highest, 2022–2025, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorksAll time
Astronomy and AstrophysicsSubfield #116 of 443 22.7%217 #291
Physical SciencesDomain #4,016 of 12,888 21.8%379 #4046
Physics and AstronomyField #1,198 of 1,646 24.4%292 #1942

Each strip is that field’s whole ranked pool, with the notch where Purple Mountain Observatory sits in it, in the colour of the band that rank falls in. The track under the rate is the rate itself: it carries no world mark, because the world rate differs by field (from about 6% to 21% in this record).

Which of those standings moved

The same fields on both windows: where it stood over the whole record, and where it stands in 2022–2025. The distance is the story, and it is the one thing the two rank columns above cannot show.

  1. Astronomy and Astrophysics#291 #116
  2. Physical Sciences#4,046 #4,016
  3. Physics and Astronomy#1,942 #1,198
all time2022–2025, better2022–2025, worse

A dot further right is a better standing. Fields it was not ranked in over the whole record are left out.

What does Purple Mountain Observatory specialise in?

Where its research is concentrated relative to its size: Astronomy and Astrophysics takes 108.0× the share of its output that it takes of world research.

  1. Astronomy and AstrophysicsSubfield · 216.5 works108×
  2. Nuclear and High Energy PhysicsSubfield · 42.5 works35×
  3. Physics and AstronomyField · 291.8 works34×
← less than its size predicts1×more →

Location quotient, a volume reading rather than an impact one. It surfaces small, lopsided specialities.

Field profile

Location quotient across every field it publishes in: outside the ring is more than an institution of this size would be expected to publish, inside it is less.

Agricultural and Biological Sciences: 0.01× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.19× its world share, 4 worksBiochemistry, Geneti…Neuroscience: 0.04× its world share, 0 worksNeuroscienceChemical Engineering: 0.23× its world share, 0 worksChemical EngineeringChemistry: 0.98× its world share, 6 worksChemistryComputer Science: 0.23× its world share, 7 worksComputer ScienceEarth and Planetary Sciences: 2.72× its world share, 16 worksEarth and Planetary …Energy: 0.10× its world share, 0 worksEnergyEngineering: 0.77× its world share, 45 worksEngineeringEnvironmental Science: 0.25× its world share, 5 worksEnvironmental ScienceMaterials Science: 0.23× its world share, 3 worksMaterials ScienceMathematics: 0.94× its world share, 4 worksMathematicsPhysics and Astronomy: 34.00× its world share, 292 worksPhysics and AstronomyHealth Professions: 0.02× its world share, 0 worksHealth ProfessionsMedicine: 0.02× its world share, 1 worksMedicineEconomics, Econometrics and Finance: 0.02× its world share, 0 worksEconomics, Econometr…Social Sciences: 0.02× its world share, 1 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Physics and Astronomy, 34.0×. Every wedge is a field page.

Who are the top researchers at Purple Mountain Observatory?

Ranked on the composite score, Zhi-Ping Jin, Yi-Zhong Fan and Xuguo Zhang lead among researchers whose main affiliation is Purple Mountain Observatory.

  1. 1 Zhi-Ping Jin China · #137,331 worldwide 199 citations · 22 works
  2. 2 Yi-Zhong Fan China · #301,720 worldwide 448 citations · 90 works
  3. 3 Xuguo Zhang China · #371,688 worldwide 55 citations · 19 works
  4. 4 G. Chen China · #373,762 worldwide 110 citations · 20 works
  5. 5 Haisheng Ji China · #441,723 worldwide 108 citations · 39 works
  6. 6 Yu Gao China · #444,252 worldwide 437 citations · 102 works
  7. 7 Sheng‐Cai Shi China · #527,512 worldwide 132 citations · 61 works
  8. 8 Lei Feng China · #566,670 worldwide 223 citations · 49 works
  9. 9 Yue-Lin Sming Tsai China · #586,445 worldwide 137 citations · 21 works
  10. 10 Da-Ming Wei China · #607,853 worldwide 123 citations · 40 works
All ranked researchers at Purple Mountain Observatory

Which keywords describe research at Purple Mountain Observatory?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Gravitational Waves, Solar Wind, Supernovae, Star Formation, Black Holes, Dark Matter, Cosmic Rays and Neutrinos.

▲ more of its work than of the world’s◆ about the world’s share▼ less than the world’s

Size is fractional works in 2022–2025 in the topics tagged with each word; colour is the word's share of this institution's work against its share of the world's. The 40 words are chosen for being large and distinctive. Each links to the topic it comes from most.

All 40 words, with their numbers
  1. Gravitational Waves42▲ 194×2 topics
  2. Solar Wind38▲ 106×2 topics
  3. Supernovae34▲ 108×2 topics
  4. Star Formation32▲ 159×2 topics
  5. Black Holes31▲ 85×3 topics
  6. Dark Matter31▲ 70×4 topics
  7. Cosmic Rays30▲ 152×2 topics
  8. Neutrinos30▲ 152×2 topics
  9. Exoplanets29▲ 192×1 topic
  10. Stellar Astrophysics29▲ 192×1 topic
  11. Accretion Disks29▲ 162×2 topics
  12. Magnetic Fields29▲ 118×2 topics
  13. Cosmology28▲ 108×2 topics
  14. Solar System Abundances26▲ 136×1 topic
  15. Terrestrial Planets26▲ 136×1 topic
  16. Galactic Center25▲ 142×2 topics
  17. Coronal Mass Ejections25▲ 174×1 topic
  18. Solar Dynamics Observatory25▲ 174×1 topic
  19. Nucleosynthesis24▲ 126×3 topics
  20. Gamma-Ray Bursts23▲ 228×1 topic
  21. Neutron Stars23▲ 228×1 topic
  22. Equation of State19▲ 90×2 topics
  23. Binary Black Hole18▲ 163×1 topic
  24. Neutron Star18▲ 163×1 topic
  25. Turbulence18▲ 53×3 topics
  26. High-Energy Astrophysics17▲ 168×1 topic
  27. Particle Acceleration17▲ 168×1 topic
  28. Molecular Clouds17▲ 173×1 topic
  29. Protoplanetary Disks17▲ 173×1 topic
  30. Galaxies16▲ 147×1 topic
  31. Stellar Populations16▲ 147×1 topic
  32. Particle Physics15▲ 52×2 topics
  33. Electron Acceleration14▲ 52×2 topics
  34. Ionosphere13▲ 61×1 topic
  35. Magnetosphere13▲ 61×1 topic
  36. X-Ray Spectroscopy13▲ 76×2 topics
  37. Event Horizon Telescope13▲ 151×1 topic
  38. X-Ray Astronomy13▲ 151×1 topic
  39. Axions12▲ 135×1 topic
  40. WIMPs12▲ 135×1 topic

Which research topics does Purple Mountain Observatory publish most on?

By volume in 2022–2025: Stellar, planetary, and galactic studies, Astro and Planetary Science, Solar and Space Plasma Dynamics and Gamma-ray bursts and supernovae.

Stellar, planetary, and …29Stellar, planetary, and galactic studies: 29 fractional worksAstro and Planetary Scie…26Astro and Planetary Science: 26 fractional worksSolar and Space Plasma D…25Solar and Space Plasma Dynamics: 25 fractional worksGamma-ray bursts and sup…23Gamma-ray bursts and supernovae: 23 fractional worksPulsars and Gravitational Waves Research: 18 fractional worksAstrophysics and Cosmic Phenomena: 17 fractional worksAstrophysics and Star Fo…17Astrophysics and Star Formation Studies: 17 fractional worksGalaxies: Formation, Evo…16Galaxies: Formation, Evolution, Phenomena: 16 fractional worksIonosphere and magnetosp…13Ionosphere and magnetosphere dynamics: 13 fractional worksAstrophysical Phenomena …13Astrophysical Phenomena and Observations: 13 fractional works
Astronomy and AstrophysicsNuclear and High Energy Physics

Area is fractional works; colour is the subfield each topic belongs to.

  1. 1 Stellar, planetary, and galactic studies Astronomy and Astrophysics 29 works
  2. 2 Astro and Planetary Science Astronomy and Astrophysics 26 works
  3. 3 Solar and Space Plasma Dynamics Astronomy and Astrophysics 25 works
  4. 4 Gamma-ray bursts and supernovae Astronomy and Astrophysics 23 works
  5. 5 Pulsars and Gravitational Waves Research Astronomy and Astrophysics 18 works
  6. 6 Astrophysics and Cosmic Phenomena Nuclear and High Energy Physics 17 works
  7. 7 Astrophysics and Star Formation Studies Astronomy and Astrophysics 17 works
  8. 8 Galaxies: Formation, Evolution, Phenomena Astronomy and Astrophysics 16 works
  9. 9 Ionosphere and magnetosphere dynamics Astronomy and Astrophysics 13 works
  10. 10 Astrophysical Phenomena and Observations Astronomy and Astrophysics 13 works

How open and international is its research?

Against the world’s own shares — the tick on each track. Both are shares of its output, so they sit on one scale and can be read against each other as well as against the world.

openly available48.4%not open51.6%

World: 28% of research is openly available.

with international co-authors28.2%domestic only71.8%

World: 19% is written across borders.

How has Purple Mountain Observatory's research output changed?

Output in 2018–2022 was 19% higher than in 2013–2017.

1990200020102020
grewheldshrank

The same series as a ribbon — one cell per year, darker for more. The line above answers how much; this answers when.

Other research institutions in Nanjing

All research institutions in Nanjing

Research measures only: rankings here say nothing about teaching, admissions or student experience. Comparable institutions and collaboration partners are in the interactive view on the map.