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Research facility · Sofia · Bulgaria

Institute of Astronomy and National Astronomical Observatory

In research, Institute of Astronomy and National Astronomical Observatory stands highest in Physical Sciences (#15,305 of 21,541 worldwide), Astronomy and Astrophysics (#1,087 of 1,146 worldwide) and Physics and Astronomy (#3,605 of 3,663 worldwide), over all time. Relative to its size it is most specialised in Astronomy and Astrophysics and Physics and Astronomy — Astronomy and Astrophysics is 100.2× its share of world research.

astro.bas.bgROR OpenAlex
World rank, all time
#29,101
of 42,892
Rank in Bulgaria
#78
of 122
Research works
514
▲ 21% vs 2013–17
Citations
3.7k
7.3 per fractional work
Top-10% rate
9.7%
record average 16.5%
Open access
62%
world 28%

What is Institute of Astronomy and National Astronomical Observatory known for in research?

The fields where it stands highest, over all time, ranked among every institution above the floor in each field.

FieldWorld rankWhere that sitsTop-10% rateWorks
Physical SciencesDomain #15,305 of 21,541 7.1%491
Astronomy and AstrophysicsSubfield #1,087 of 1,146 6.3%273
Physics and AstronomyField #3,605 of 3,663 8.0%377

Each strip is that field’s whole ranked pool, with the notch where Institute of Astronomy and National Astronomical 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).

What does Institute of Astronomy and National Astronomical Observatory specialise in?

Where its research is concentrated relative to its size: Astronomy and Astrophysics takes 100.2× the share of its output that it takes of world research.

  1. Astronomy and AstrophysicsSubfield · 27.1 works100×
  2. Physics and AstronomyField · 37.2 works32×
← 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.

Biochemistry, Genetics and Molecular Biology: 0.46× its world share, 1 worksBiochemistry, Geneti…Chemistry: 0.23× its world share, 0 worksChemistryComputer Science: 0.13× its world share, 0 worksComputer ScienceEarth and Planetary Sciences: 4.82× its world share, 4 worksEarth and Planetary …Energy: 0.02× its world share, 0 worksEnergyEngineering: 0.68× its world share, 5 worksEngineeringEnvironmental Science: 0.63× its world share, 2 worksEnvironmental ScienceMaterials Science: 0.06× its world share, 0 worksMaterials ScienceMathematics: 1.22× its world share, 1 worksMathematicsPhysics and Astronomy: 32.16× its world share, 37 worksPhysics and AstronomyMedicine: 0.01× its world share, 0 worksMedicineArts and Humanities: 0.03× its world share, 0 worksArts and HumanitiesBusiness, Management and Accounting: 0.10× its world share, 0 worksBusiness, Management…Economics, Econometrics and Finance: 0.15× its world share, 0 worksEconomics, Econometr…Psychology: 0.03× its world share, 0 worksPsychologySocial Sciences: 0.09× 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, 32.2×. Every wedge is a field page.

Who are the top researchers at Institute of Astronomy and National Astronomical Observatory?

Ranked on the composite score, R. Bachev, A. Strigachev and E. Semkov lead among researchers whose main affiliation is Institute of Astronomy and National Astronomical Observatory.

  1. 1 R. Bachev Bulgaria · #728,987 worldwide 125 citations · 39 works
  2. 2 A. Strigachev Bulgaria · #965,295 worldwide 98 citations · 31 works
  3. 3 E. Semkov Bulgaria · #991,793 worldwide 91 citations · 40 works
  4. 4 N. Markova Bulgaria · #1,139,665 worldwide 57 citations · 18 works
  5. 5 T. Tomov Bulgaria · #1,194,553 worldwide 41 citations · 58 works
  6. 6 S. Peneva Bulgaria · #1,319,659 worldwide 46 citations · 20 works
  7. 7 I. Kh. Iliev Bulgaria · #1,330,466 worldwide 32 citations · 39 works
  8. 8 M. K. Tsvetkov Bulgaria · #1,352,980 worldwide 11 citations · 57 works
  9. 9 R. Konstantinova‐Antova Bulgaria · #1,403,735 worldwide 37 citations · 28 works
  10. 10 R. Zamanov Bulgaria · #1,407,388 worldwide 16 citations · 42 works
All ranked researchers at Institute of Astronomy and National Astronomical Observatory

Which keywords describe research at Institute of Astronomy and National Astronomical Observatory?

By fractional works in 2022–2025, weighted toward what it does more of than the world: Solar Wind, Coronal Mass Ejections, Solar Dynamics Observatory, Exoplanets, Stellar Astrophysics, Solar System Abundances, Terrestrial Planets and Accretion Disks.

▲ 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. Solar Wind9▲ 194×2 topics
  2. Coronal Mass Ejections6▲ 327×1 topic
  3. Solar Dynamics Observatory6▲ 327×1 topic
  4. Exoplanets5▲ 246×1 topic
  5. Stellar Astrophysics5▲ 246×1 topic
  6. Solar System Abundances5▲ 185×1 topic
  7. Terrestrial Planets5▲ 185×1 topic
  8. Accretion Disks4▲ 158×2 topics
  9. Magnetic Fields4▲ 115×2 topics
  10. Cosmic Rays3▲ 121×2 topics
  11. Neutrinos3▲ 121×2 topics
  12. Electron Acceleration3▲ 89×2 topics
  13. Ionosphere3▲ 106×1 topic
  14. Magnetosphere3▲ 106×1 topic
  15. Dark Matter3▲ 45×3 topics
  16. Galactic Center3▲ 113×2 topics
  17. Star Formation3▲ 99×2 topics
  18. Turbulence2▲ 55×2 topics
  19. Black Holes2▲ 48×3 topics
  20. Optical 3D Laser Measurement2▲ 391×1 topic
  21. Position-Sensitive Detector2▲ 391×1 topic
  22. High-Energy Astrophysics2▲ 157×1 topic
  23. Molecular Clouds2▲ 166×1 topic
  24. Particle Acceleration2▲ 157×1 topic
  25. Particle Physics2▲ 55×2 topics
  26. Protoplanetary Disks2▲ 166×1 topic
  27. Supernovae2▲ 47×2 topics
  28. Gravitational Waves2▲ 65×2 topics
  29. Astronomical Instrumentation2▲ 132×1 topic
  30. Event Horizon Telescope2▲ 149×1 topic
  31. Spectrograph2▲ 132×1 topic
  32. X-Ray Astronomy2▲ 149×1 topic
  33. Cosmology2▲ 44×2 topics
  34. Gamma-Ray Bursts2▲ 111×1 topic
  35. Neutron Stars2▲ 111×1 topic
  36. Neutrino Flavor Transformation1▲ 176×1 topic
  37. Neutrino Oscillations1▲ 176×1 topic
  38. Geomagnetic Field1▲ 107×1 topic
  39. Higgs Boson1▲ 44×1 topic
  40. Magnetosome Formation1▲ 107×1 topic

Which research topics does Institute of Astronomy and National Astronomical Observatory publish most on?

By volume in 2022–2025: Solar and Space Plasma Dynamics, Stellar, planetary, and galactic studies, Astro and Planetary Science and Ionosphere and magnetosphere dynamics.

Solar and Space Plasma D…6Solar and Space Plasma Dynamics: 6 fractional worksStellar, planetary, and galactic studies: 5 fractional worksAstro and Planetary Science: 5 fractional worksIonosphere and magnetosphere dynamics: 3 fractional worksAstronomical Observations and Instrumentation: 2 fractional worksAstrophysics and Star Fo…2Astrophysics and Star Formation Studies: 2 fractional worksAstrophysics and Cosmic Phenomena: 2 fractional worksAstrophysical Phenomena and Observations: 2 fractional worksAstronomy and Astrophysical Research: 2 fractional worksGamma-ray bursts and supernovae: 2 fractional works
Astronomy and AstrophysicsComputational MechanicsNuclear and High Energy PhysicsInstrumentation

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

  1. 1 Solar and Space Plasma Dynamics Astronomy and Astrophysics 6 works
  2. 2 Stellar, planetary, and galactic studies Astronomy and Astrophysics 5 works
  3. 3 Astro and Planetary Science Astronomy and Astrophysics 5 works
  4. 4 Ionosphere and magnetosphere dynamics Astronomy and Astrophysics 3 works
  5. 5 Astronomical Observations and Instrumentation Computational Mechanics 2 works
  6. 6 Astrophysics and Star Formation Studies Astronomy and Astrophysics 2 works
  7. 7 Astrophysics and Cosmic Phenomena Nuclear and High Energy Physics 2 works
  8. 8 Astrophysical Phenomena and Observations Astronomy and Astrophysics 2 works
  9. 9 Astronomy and Astrophysical Research Instrumentation 2 works
  10. 10 Gamma-ray bursts and supernovae Astronomy and Astrophysics 2 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 available62.1%not open37.9%

World: 28% of research is openly available.

with international co-authors38.8%domestic only61.2%

World: 19% is written across borders.

How has Institute of Astronomy and National Astronomical Observatory's research output changed?

Output in 2018–2022 was 21% 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 Sofia

All research institutions in Sofia

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.