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Research facility · Porto · Portugal

Institute of Astrophysics and Space Sciences

In research, Institute of Astrophysics and Space Sciences stands highest in Physical Sciences (#4,535 of 12,888 worldwide), Astronomy and Astrophysics (#252 of 443 worldwide) and Physics and Astronomy (#1,290 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 100.9× its share of world research.

iastro.ptROR OpenAlex
World rank, 2022–2025
#8,208
of 28,054 · #9,347 all time
Rank in Portugal
#56
of 187
Research works
662
▲ 82% vs 2013–17
Citations
18k
26.6 per fractional work
Top-10% rate
26.9%
record average 16.5%
Open access
83%
world 28%

What is Institute of Astrophysics and Space Sciences 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 #4,535 of 12,888 27.5%158 #5478
Astronomy and AstrophysicsSubfield #252 of 443 29.1%87 #404
Physics and AstronomyField #1,290 of 1,646 29.1%126 #2176

Each strip is that field’s whole ranked pool, with the notch where Institute of Astrophysics and Space Sciences 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#5,478 #4,535
  2. Astronomy and Astrophysics#404 #252
  3. Physics and Astronomy#2,176 #1,290
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 Institute of Astrophysics and Space Sciences specialise in?

Where its research is concentrated relative to its size: Astronomy and Astrophysics takes 100.9× the share of its output that it takes of world research.

  1. Astronomy and AstrophysicsSubfield · 87.0 works101×
  2. Nuclear and High Energy PhysicsSubfield · 21.1 works40×
  3. Physics and AstronomyField · 126.0 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: 0.06× its world share, 0 worksAgricultural and Bio…Biochemistry, Genetics and Molecular Biology: 0.10× its world share, 1 worksBiochemistry, Geneti…Neuroscience: 0.13× its world share, 0 worksNeuroscienceChemical Engineering: 0.18× its world share, 0 worksChemical EngineeringChemistry: 0.52× its world share, 1 worksChemistryComputer Science: 0.48× its world share, 6 worksComputer ScienceEarth and Planetary Sciences: 2.46× its world share, 6 worksEarth and Planetary …Energy: 0.05× its world share, 0 worksEnergyEngineering: 0.43× its world share, 11 worksEngineeringEnvironmental Science: 0.58× its world share, 5 worksEnvironmental ScienceMaterials Science: 0.04× its world share, 0 worksMaterials ScienceMathematics: 0.97× its world share, 2 worksMathematicsPhysics and Astronomy: 34.12× its world share, 126 worksPhysics and AstronomyHealth Professions: 0.13× its world share, 1 worksHealth ProfessionsMedicine: 0.03× its world share, 1 worksMedicineArts and Humanities: 0.14× its world share, 1 worksArts and HumanitiesBusiness, Management and Accounting: 0.22× its world share, 1 worksBusiness, Management…Decision Sciences: 0.20× its world share, 0 worksDecision SciencesEconomics, Econometrics and Finance: 0.12× its world share, 0 worksEconomics, Econometr…Psychology: 0.13× its world share, 1 worksPsychologySocial Sciences: 0.09× its world share, 2 worksSocial Sciences1×world share
more than its size predictsabout as predictedless

Rings at 0.5×, 1× and 2×. Widest outward: Physics and Astronomy, 34.1×. Every wedge is a field page.

Who are the top researchers at Institute of Astrophysics and Space Sciences?

Ranked on the composite score, Pedro Machado, J. P. Faria and M. S. N. Kumar lead among researchers whose main affiliation is Institute of Astrophysics and Space Sciences.

  1. 1 Pedro Machado Portugal · #223,782 worldwide 88 citations · 21 works
  2. 2 J. P. Faria Portugal · #325,734 worldwide 165 citations · 33 works
  3. 3 M. S. N. Kumar Portugal · #539,152 worldwide 102 citations · 26 works
  4. 4 P. Papaderos Portugal · #700,006 worldwide 202 citations · 61 works
  5. 5 Bárbara Rojas-Ayala Portugal · #814,978 worldwide 78 citations · 25 works
  6. 6 J. M. Gomes Portugal · #1,065,059 worldwide 82 citations · 28 works
  7. 7 C. Pappalardo Portugal · #1,397,315 worldwide 41 citations · 22 works
  8. 8 J. Gomes da Silva Portugal · #1,404,953 worldwide 35 citations · 19 works
  9. 9 Iris Breda Portugal · #1,578,694 worldwide 22 citations · 16 works
  10. 10 P. Lagos Portugal · #1,623,729 worldwide 19 citations · 17 works
All ranked researchers at Institute of Astrophysics and Space Sciences

Which keywords describe research at Institute of Astrophysics and Space Sciences?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Black Holes, Supernovae, General Relativity, Dark Energy, Cosmic Microwave Background, Cosmological Parameters, Star Formation and Quantum Gravity.

▲ 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. Black Holes27▲ 169×3 topics
  2. Supernovae24▲ 180×2 topics
  3. General Relativity22▲ 193×2 topics
  4. Dark Energy20▲ 188×2 topics
  5. Cosmic Microwave Background20▲ 218×1 topic
  6. Cosmological Parameters20▲ 218×1 topic
  7. Star Formation17▲ 199×2 topics
  8. Quantum Gravity17▲ 125×4 topics
  9. Dark Matter16▲ 82×4 topics
  10. Cosmology15▲ 134×3 topics
  11. Exoplanets14▲ 214×1 topic
  12. Stellar Astrophysics14▲ 214×1 topic
  13. Field Theories13▲ 170×1 topic
  14. Holographic13▲ 170×1 topic
  15. Gravitational Waves12▲ 135×2 topics
  16. Accretion Disks11▲ 143×2 topics
  17. Magnetic Fields11▲ 103×2 topics
  18. Galaxies10▲ 219×1 topic
  19. Stellar Populations10▲ 219×1 topic
  20. Astronomical Instrumentation10▲ 228×1 topic
  21. Spectrograph10▲ 228×1 topic
  22. Binary Black Hole8▲ 167×1 topic
  23. Neutron Star8▲ 167×1 topic
  24. Turbulence7▲ 51×2 topics
  25. Molecular Clouds7▲ 176×1 topic
  26. Protoplanetary Disks7▲ 176×1 topic
  27. Galactic Center7▲ 92×2 topics
  28. Solar System Abundances6▲ 78×1 topic
  29. Terrestrial Planets6▲ 78×1 topic
  30. Particle Physics5▲ 42×2 topics
  31. Cosmic Rays5▲ 60×2 topics
  32. Neutrinos5▲ 60×2 topics
  33. Nucleosynthesis5▲ 57×3 topics
  34. Solar Wind5▲ 30×2 topics
  35. Gamma-Ray Bursts4▲ 100×1 topic
  36. Neutron Stars4▲ 100×1 topic
  37. Event Horizon Telescope4▲ 104×1 topic
  38. X-Ray Astronomy4▲ 104×1 topic
  39. Coronal Mass Ejections3▲ 56×1 topic
  40. Solar Dynamics Observatory3▲ 56×1 topic

Which research topics does Institute of Astrophysics and Space Sciences publish most on?

By volume in 2022–2025: Cosmology and Gravitation Theories, Stellar, planetary, and galactic studies, Black Holes and Theoretical Physics and Galaxies: Formation, Evolution, Phenomena.

Cosmology and Gravitatio…20Cosmology and Gravitation Theories: 20 fractional worksStellar, planetary, and galactic studies: 14 fractional worksBlack Holes and Theoreti…13Black Holes and Theoretical Physics: 13 fractional worksGalaxies: Formation, Evo…10Galaxies: Formation, Evolution, Phenomena: 10 fractional worksAstronomy and Astrophysical Research: 10 fractional worksPulsars and Gravitational Waves Research: 8 fractional worksAstrophysics and Star Fo…7Astrophysics and Star Formation Studies: 7 fractional worksAstro and Planetary Science: 6 fractional worksGamma-ray bursts and supernovae: 4 fractional worksAstrophysical Phenomena and Observations: 4 fractional works
Astronomy and AstrophysicsNuclear and High Energy PhysicsInstrumentation

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

  1. 1 Cosmology and Gravitation Theories Astronomy and Astrophysics 20 works
  2. 2 Stellar, planetary, and galactic studies Astronomy and Astrophysics 14 works
  3. 3 Black Holes and Theoretical Physics Nuclear and High Energy Physics 13 works
  4. 4 Galaxies: Formation, Evolution, Phenomena Astronomy and Astrophysics 10 works
  5. 5 Astronomy and Astrophysical Research Instrumentation 10 works
  6. 6 Pulsars and Gravitational Waves Research Astronomy and Astrophysics 8 works
  7. 7 Astrophysics and Star Formation Studies Astronomy and Astrophysics 7 works
  8. 8 Astro and Planetary Science Astronomy and Astrophysics 6 works
  9. 9 Gamma-ray bursts and supernovae Astronomy and Astrophysics 4 works
  10. 10 Astrophysical Phenomena and Observations Astronomy and Astrophysics 4 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 available82.9%not open17.1%

World: 28% of research is openly available.

with international co-authors65.3%domestic only34.7%

World: 19% is written across borders.

How has Institute of Astrophysics and Space Sciences's research output changed?

Output in 2018–2022 was 82% 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 Porto

All research institutions in Porto

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.