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Research facility · Paris · France

Observatoire de Paris

In research, Observatoire de Paris stands highest in Physical Sciences (#3,309 of 12,888 worldwide), Astronomy and Astrophysics (#229 of 443 worldwide) and Physics and Astronomy (#1,116 of 1,646 worldwide), 2022–2025. Relative to its size it is most specialised in Astronomy and Astrophysics and Physics and Astronomy — Astronomy and Astrophysics is 67.0× its share of world research.

observatoiredeparis.psl.euROR OpenAlex
World rank, 2022–2025
#5,842
of 28,054 · #1,584 all time
Rank in France
#135
of 1,422
Research works
6.1k
▼ 36% vs 2013–17
Citations
133k
21.8 per fractional work
Top-10% rate
11.8%
record average 16.5%
Open access
42%
world 28%

What is Observatoire de Paris 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
Physical SciencesDomain #3,309 of 12,888 14.3%292 #1076
Astronomy and AstrophysicsSubfield #229 of 443 16.5%137 #78
Physics and AstronomyField #1,116 of 1,646 15.6%188 #508

Each strip is that field’s whole ranked pool, with the notch where Observatoire de Paris 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. Physical Sciences#1,076 #3,309
  2. Astronomy and Astrophysics#78 #229
  3. Physics and Astronomy#508 #1,116
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 Observatoire de Paris specialise in?

Where its research is concentrated relative to its size: Astronomy and Astrophysics takes 67.0× the share of its output that it takes of world research.

  1. Astronomy and AstrophysicsSubfield · 137.0 works67×
  2. Physics and AstronomyField · 188.5 works22×
← 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: 0.32× its world share, 6 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.82× its world share, 17 worksBiochemistry, Geneti…Immunology and Microbiology: 0.22× its world share, 1 worksImmunology and Micro…Neuroscience: 0.17× its world share, 1 worksNeurosciencePharmacology, Toxicology and Pharmaceutics: 1.59× its world share, 2 worksPharmacology, Toxico…Chemical Engineering: 0.55× its world share, 1 worksChemical EngineeringChemistry: 1.73× its world share, 11 worksChemistryComputer Science: 0.24× its world share, 7 worksComputer ScienceEarth and Planetary Sciences: 3.25× its world share, 20 worksEarth and Planetary …Energy: 0.29× its world share, 1 worksEnergyEngineering: 0.69× its world share, 41 worksEngineeringEnvironmental Science: 0.68× its world share, 13 worksEnvironmental ScienceMaterials Science: 0.36× its world share, 5 worksMaterials ScienceMathematics: 1.00× its world share, 5 worksMathematicsPhysics and Astronomy: 21.55× its world share, 188 worksPhysics and AstronomyDentistry: 0.08× its world share, 0 worksDentistryHealth Professions: 0.32× its world share, 3 worksHealth ProfessionsMedicine: 0.31× its world share, 23 worksMedicineNursing: 0.24× its world share, 0 worksNursingVeterinary: 1.24× its world share, 1 worksVeterinaryArts and Humanities: 1.84× its world share, 21 worksArts and HumanitiesBusiness, Management and Accounting: 0.16× its world share, 2 worksBusiness, Management…Decision Sciences: 0.59× its world share, 2 worksDecision SciencesEconomics, Econometrics and Finance: 0.20× its world share, 2 worksEconomics, Econometr…Psychology: 0.21× its world share, 2 worksPsychologySocial Sciences: 0.34× its world share, 17 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Physics and Astronomy, 21.6×. Every wedge is a field page.

Who are the top researchers at Observatoire de Paris?

Ranked on the composite score, A. Clairon, B. Guinot and A. Brahic lead among researchers whose main affiliation is Observatoire de Paris.

  1. 1 A. Clairon France · #22,122 worldwide 575 citations · 66 works
  2. 2 B. Guinot France · #69,293 worldwide 141 citations · 37 works
  3. 3 A. Brahic France · #78,642 worldwide 160 citations · 55 works
  4. 4 Jean‐Pierre Luminet France · #82,051 worldwide 208 citations · 33 works
  5. 5 Th. Encrenaz France · #91,186 worldwide 277 citations · 72 works
  6. 6 Richard Monier France · #105,587 worldwide 385 citations · 52 works
  7. 7 F. Hammer France · #125,239 worldwide 868 citations · 139 works
  8. 8 N. F. Allard France · #157,473 worldwide 219 citations · 25 works
  9. 9 C. J. Zeippen France · #168,977 worldwide 185 citations · 43 works
  10. 10 Jean-Paul Zahn France · #179,164 worldwide 172 citations · 49 works
All ranked researchers at Observatoire de Paris

Which keywords describe research at Observatoire de Paris?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Exoplanets, Stellar Astrophysics, Solar System Abundances, Terrestrial Planets, Star Formation, Magnetic Fields, Accretion Disks and Solar Wind.

▲ 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. Exoplanets27▲ 173×1 topic
  2. Stellar Astrophysics27▲ 173×1 topic
  3. Solar System Abundances24▲ 126×1 topic
  4. Terrestrial Planets24▲ 126×1 topic
  5. Star Formation17▲ 83×2 topics
  6. Magnetic Fields16▲ 63×3 topics
  7. Accretion Disks16▲ 86×2 topics
  8. Solar Wind16▲ 43×2 topics
  9. Climate Change15▲ 1.38×52 topics
  10. Astronomical Instrumentation14▲ 136×1 topic
  11. Spectrograph14▲ 136×1 topic
  12. Turbulence13▲ 39×4 topics
  13. Radio Astronomy13▲ 147×2 topics
  14. Molecular Clouds13▲ 132×1 topic
  15. Protoplanetary Disks13▲ 132×1 topic
  16. Cultural Impact12▲ 56×2 topics
  17. Spectroscopy12▲ 18×7 topics
  18. Coronal Mass Ejections11▲ 75×1 topic
  19. Solar Dynamics Observatory11▲ 75×1 topic
  20. Mars11▲ 85×1 topic
  21. Martian Surface11▲ 85×1 topic
  22. High-Resolution Imaging9▲ 49×2 topics
  23. Historical Figures9▲ 133×2 topics
  24. Gravitational Waves9▲ 42×2 topics
  25. Solar Observations9▲ 240×1 topic
  26. Transits of Venus9▲ 240×1 topic
  27. Supernovae9▲ 27×2 topics
  28. Black Holes8▲ 22×3 topics
  29. Nucleosynthesis7▲ 36×3 topics
  30. Adaptive Optics6▲ 126×1 topic
  31. Wavefront Sensing6▲ 126×1 topic
  32. Hydrological Modeling6▲ 6.6×5 topics
  33. Cosmology6▲ 23×4 topics
  34. Gamma-Ray Bursts6▲ 57×1 topic
  35. Neutron Stars6▲ 57×1 topic
  36. Dark Matter6▲ 12×3 topics
  37. Electron Acceleration5▲ 19×2 topics
  38. Ionosphere5▲ 21×1 topic
  39. Magnetosphere5▲ 21×1 topic
  40. Structural Health Monitoring5▲ 16×3 topics

Which research topics does Observatoire de Paris publish most on?

By volume in 2022–2025: Stellar, planetary, and galactic studies, Astro and Planetary Science, Astronomy and Astrophysical Research and Astrophysics and Star Formation Studies.

Stellar, planetary, and …27Stellar, planetary, and galactic studies: 27 fractional worksAstro and Planetary Science: 24 fractional worksAstronomy and Astrophysical Research: 14 fractional worksAstrophysics and Star Formation Studies: 13 fractional worksSolar and Space Plasma Dynamics: 11 fractional worksPlanetary Science and Ex…11Planetary Science and Exploration: 11 fractional worksHistory and Developments in Astronomy: 9 fractional worksAdaptive optics and wavefront sensing: 6 fractional worksGamma-ray bursts and supernovae: 6 fractional worksIonosphere and magnetosphere dynamics: 5 fractional works
Astronomy and AstrophysicsInstrumentationAtomic and Molecular Physics, and Optics

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

  1. 1 Stellar, planetary, and galactic studies Astronomy and Astrophysics 27 works
  2. 2 Astro and Planetary Science Astronomy and Astrophysics 24 works
  3. 3 Astronomy and Astrophysical Research Instrumentation 14 works
  4. 4 Astrophysics and Star Formation Studies Astronomy and Astrophysics 13 works
  5. 5 Solar and Space Plasma Dynamics Astronomy and Astrophysics 11 works
  6. 6 Planetary Science and Exploration Astronomy and Astrophysics 11 works
  7. 7 History and Developments in Astronomy Astronomy and Astrophysics 9 works
  8. 8 Adaptive optics and wavefront sensing Atomic and Molecular Physics, and Optics 6 works
  9. 9 Gamma-ray bursts and supernovae Astronomy and Astrophysics 6 works
  10. 10 Ionosphere and magnetosphere dynamics Astronomy and Astrophysics 5 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 available42.1%not open57.9%

World: 28% of research is openly available.

with international co-authors38.1%domestic only61.9%

World: 19% is written across borders.

How has Observatoire de Paris's research output changed?

Output in 2018–2022 was 36% lower 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 Paris

All research institutions in Paris

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.