José Antonio de Freitas Pacheco | Physics and Astronomy | Research Excellence Award

Research Excellence Award

José Antonio de Freitas PachecoLaboratoire Lagrange, Côte d’Azur University, Observatoire de la Côte d’Azur, France

José Antonio de Freitas Pacheco
Affiliation Observatoire de la Côte d’Azur
Country France
Scopus ID 7003474431
Documents 129
Citations 1,740
h-index 25
Subject Area Physics and Astronomy
Event International Phenomenological Research Awards
ORCID 0000-0003-0848-441X
Google Scholar QL9FrawAAAAJ

José Antonio de Freitas Pacheco is a physicist and astrophysicist affiliated with Laboratoire Lagrange, Côte d’Azur University and the Observatoire de la Côte d’Azur in France. His academic career encompasses cosmology, high-energy astrophysics, black-hole physics, neutron-star physics and gravitational-wave research, supported by extensive international collaborations and peer-reviewed scientific publications.[1] [2]

Abstract

José Antonio de Freitas Pacheco has developed an extensive academic career in physics and astronomy, with research spanning cosmology, high-energy astrophysics, black holes, neutron stars and gravitational waves. His record includes 129 Scopus-indexed documents, 1,740 Scopus citations and a Scopus h-index of 25, while his Google Scholar profile reports 387 documents, 5,412 citations and an h-index of 38. His scientific activities have been accompanied by academic leadership, doctoral supervision, international collaborations and recognition from Brazilian and academic institutions. [1] [2]

Keywords

Cosmology; astrophysics; high-energy astrophysics; black holes; neutron stars; gravitational waves; magnetars; dark matter haloes; stellar populations; observational astronomy; theoretical physics; astronomy and astrophysics.

Introduction

José Antonio de Freitas Pacheco’s academic trajectory connects Brazilian and French scientific institutions and includes research, teaching, institutional leadership and international scientific cooperation. He completed undergraduate studies at the University of São Paulo and received a Ph.D. in Physical Sciences from the University of Nice in 1971. He subsequently became Full Professor at the University of São Paulo in 1985 and Astronome Titulaire within the French CNAP in 1995.

His professional activities have included leadership positions at the National Observatory of Rio de Janeiro, the Astronomical and Geophysical Institute of the University of São Paulo and the Observatoire de la Côte d’Azur. He has also participated in scientific councils and international advisory activities, including work associated with the Regional Centre for Space Science and Technology Education for Latin America and the Caribbean under the United Nations framework.

Research Profile

The research profile of José Antonio de Freitas Pacheco is centered on astrophysical systems and fundamental questions in cosmology and gravitational physics. His scientific activities include the study of compact objects, gravitational-wave backgrounds, galactic and dark-matter structures, stellar populations and high-energy astrophysical phenomena.

  • Cosmology and large-scale astrophysical structures.
  • High-energy astrophysics and compact-object phenomena.
  • Physics of black holes and neutron stars.
  • Gravitational waves, including theoretical backgrounds generated by rotating neutron stars and magnetars.
  • Stellar populations and astrophysical abundance effects.
  • Dark-matter halo angular momentum, merger and accretion processes.

Research Contributions

His publication record includes more than two hundred papers in international peer-reviewed journals according to the supplied academic profile, together with communications at international symposia and articles intended for scientific dissemination. The research portfolio demonstrates sustained engagement with theoretical and observational questions across astronomy and astrophysics.

Among the cited contributions are studies of age and abundance effects in single-stellar populations, gravitational-wave backgrounds associated with rotating neutron stars, angular momentum in dark-matter haloes, gravitational-wave emission from soft-gamma repeaters and gravitational radiation from magnetars. These topics collectively reflect an emphasis on connecting astrophysical observations with models of compact objects and large-scale cosmic structures.[1]

Publications

Selected publications illustrate the breadth of the research program. Borges, Idiart, de Freitas Pacheco and Thévenin investigated age and abundance effects in single-stellar populations in Astronomical Journal. Regimbau and de Freitas Pacheco examined gravitational-wave backgrounds associated with rotating neutron stars and later considered gravitational-wave backgrounds from magnetars. Other work addressed the angular momentum of dark haloes and the possible gravitational-wave emission of soft-gamma repeaters.

Additional highly cited literature associated with his scholarly record includes work on the AMBER near-infrared spectro-interferometric instrument and its interferometric data-reduction methodology, as well as research concerning the Hubble flow around the Fornax cluster of galaxies. [3] [4] [5]

Research Impact

The supplied bibliometric information indicates substantial scholarly visibility across two major citation databases. Scopus records 129 documents, 1,740 citations and an h-index of 25, while the Google Scholar profile reports 387 documents, 5,412 citations and an h-index of 38. Differences between the databases reflect their distinct indexing coverage and citation-counting methodologies and should therefore be interpreted as complementary indicators rather than directly interchangeable measures. [1] [2]

His academic impact also encompasses doctoral education and institutional service. He has supervised 23 doctoral students from several national backgrounds, including Brazil, France, Chile and Uruguay, and has held senior academic and observatory leadership positions. His international visiting-professor activities further demonstrate sustained scientific interaction with institutions in Europe and Brazil.

Award Suitability

For the Research Excellence Award, the documented profile provides several relevant indicators: a long-standing research career in physics and astronomy, a substantial peer-reviewed publication record, significant citation activity, doctoral supervision, international collaboration and academic leadership. The combination of research breadth and sustained scholarly output provides an evidence-based basis for consideration within a research-excellence framework.

His previous distinctions include the Silver Medal of the Brazilian Society for the Progress of Science in 1975, the Grand Crux of the Scientific Merit from the Brazilian Government in 2000, the Medal of the National Observatory of Rio de Janeiro for contributions to science in 2012 and the Gold Medal of the University of São Paulo for contributions to science and education in 2012. These recognitions provide additional context for evaluating his broader academic career.[1] [2]

Conclusion

José Antonio de Freitas Pacheco’s career represents a sustained contribution to physics and astronomy through research in cosmology, high-energy astrophysics, compact objects and gravitational-wave phenomena. His publication and citation record, doctoral supervision, international collaborations, institutional leadership and prior scientific recognitions collectively establish a substantial academic profile relevant to the Research Excellence Award.

References

  1. Elsevier. (n.d.). Scopus author details: José Antonio de Freitas Pacheco, Author ID 7003474431. Scopus. https://www.scopus.com/authid/detail.uri?authorId=7003474431
  2. Google Scholar. (n.d.). José Antonio de Freitas Pacheco — Google Scholar profile. https://scholar.google.com/citations?user=QL9FrawAAAAJ&hl=en&oi=sra
  3. Petrov, R. G., Malbet, F., Weigelt, G., Antonelli, P., Beckmann, U., Bresson, Y., et al. (2007). AMBER, the near-infrared spectro-interferometric three-telescope VLTI instrument. Astronomy & Astrophysics, 464(1), 1–12. https://doi.org/10.1051/0004-6361:20066496
  4. Tatulli, E., Millour, F., Chelli, A., Duvert, B., Acke, B., Hernandez Utrera, O., et al. (2007). Interferometric data reduction with AMBER/VLTI: Principle, estimators, and illustration. Astronomy & Astrophysics, 464(1), 29–42. https://doi.org/10.1051/0004-6361:20064799
  5. Nasonova, O. G., de Freitas Pacheco, J. A., & Karachentsev, I. D. (2011). Hubble flow around Fornax cluster of galaxies. Astronomy & Astrophysics, 532, A104. https://doi.org/10.1051/0004-6361/201016004

Chengxun Yuan | Physics and Astronomy | Innovative Research Award

Innovative Research Award

Chengxun Yuan
Harbin Institute of Technology, China
Chengxun Yuan
Affiliation Harbin Institute of Technology
Country China
Scopus ID 36451487300
Documents 251
Citations 1,711
h-index 20
Subject Area Physics and Astronomy
Event International Phenomenological Research Awards
ORCID 0000-0002-2308-6703

Chengxun Yuan is a Chinese physicist and academic researcher affiliated with the Harbin Institute of Technology, where he serves as Full Professor and Vice Dean of the School of Physics. His scholarly work focuses on plasma physics, electromagnetic wave propagation, plasma diagnostics, plasma photonic crystals, dusty plasmas, ionospheric physics, and plasma-assisted technologies. Yuan has contributed extensively to the advancement of low-temperature plasma science and electromagnetic interactions in plasma media through theoretical modeling, numerical simulation, and experimental diagnostics. His publication record includes hundreds of SCI-indexed articles, monographs, and international conference contributions, reflecting sustained influence in plasma science and interdisciplinary physics research.[1]

Abstract

This article presents a scholarly overview of the academic career, scientific contributions, and research achievements of Chengxun Yuan in the field of plasma physics and electromagnetic wave propagation. His investigations have significantly contributed to theoretical and applied plasma science, particularly in glow discharges, plasma photonic crystals, dusty plasmas, ionospheric plasma interactions, and plasma-assisted diagnostics. Yuan has supervised and participated in numerous national and international research initiatives while publishing extensively in leading peer-reviewed journals indexed in Scopus and SCI databases. His interdisciplinary research integrates computational physics, plasma engineering, astrophysical plasma modeling, and electromagnetic metamaterials, contributing to the advancement of plasma-based technologies and modern theoretical physics.[2]

Keywords

Plasma Physics, Glow Discharge, Dusty Plasma, Plasma Photonic Crystals, Electromagnetic Wave Propagation, Plasma Diagnostics, Ionospheric Plasma, Metamaterials, Astrophysical Plasma, Plasma Spectroscopy, Microwave Plasma, Nonlocal Electron Distribution Function, Photonic Time Crystals, Space Physics

Introduction

The development of plasma science has become increasingly important in modern physics due to its applications in aerospace engineering, telecommunications, energy systems, advanced materials, and astrophysical investigations. Chengxun Yuan has emerged as a prominent contributor in this domain through sustained research activities centered on plasma diagnostics, electromagnetic interactions, and plasma-based functional materials. His academic formation and professional career have remained closely associated with the Harbin Institute of Technology, where he completed his undergraduate, master’s, and doctoral education in physics before advancing through academic ranks to Full Professor and Vice Dean.[1]

Yuan’s research integrates both experimental and theoretical approaches to plasma science. His work explores the physical mechanisms governing nonlocal electron distribution functions, glow discharge dynamics, plasma photonic structures, terahertz wave propagation, and plasma-assisted microwave technologies. These investigations have contributed to understanding plasma interactions in laboratory and atmospheric conditions while supporting practical technological applications.[3]

Research Profile

Chengxun Yuan earned his Bachelor of Science degree in Physics in 2004, followed by a Master of Science degree in 2007 and a Ph.D. in Physics in 2011 at the Harbin Institute of Technology. His doctoral thesis, supervised by Professor Zhongxiang Zhou, examined propagation properties of terahertz waves in plasmas. Following his doctoral studies, Yuan served as Lecturer, Associate Professor, and subsequently Full Professor at the School of Physics of the Harbin Institute of Technology. He also held a visiting scholar position at The Pennsylvania State University between 2013 and 2014.[1]

His research interests encompass plasma discharge physics, plasma diagnostics, plasma-based devices, radio wave propagation, electromagnetic metamaterials, and space plasma physics. Yuan has additionally contributed to interdisciplinary studies involving black hole physics, astrophysical plasma interactions, plasma catalysis, and topological photonic structures.[4]

  • Full Professor and Vice Dean, School of Physics, Harbin Institute of Technology
  • Academician of the Russian Academy of Natural Sciences
  • Editorial Board Member of the SCI-indexed journal Physica Scripta
  • Senior Member of the Chinese Institute of Electronics
  • Principal Investigator of more than twenty national and provincial research projects

Research Contributions

Yuan’s scientific contributions have addressed several important challenges in plasma science and electromagnetic theory. His work on nonlocal electron distribution functions in glow discharges has enhanced theoretical understanding of plasma conductivity and electron transport phenomena. Through numerical and experimental studies, he investigated inverse electron distribution functions, ambipolar field effects, and plasma oscillatory dynamics in direct-current glow discharges.[5]

Another major area of contribution involves plasma photonic crystals and metamaterials. Yuan and collaborators explored topological edge states, broadband microwave modulation, tunable plasma antennas, and photonic time crystals. These studies provided insights into electromagnetic manipulation using plasma-enabled structures and have implications for advanced communication technologies and wave-guiding systems.[6]

His research also extends to plasma spectroscopy and plasma-assisted chemical analysis. Investigations involving plasma electron spectroscopy have demonstrated novel methods for detecting impurities, decomposition products, and plasma-generated chemical species in open environments and nonlocal plasma systems.[7]

  • Development of theoretical models for glow discharge plasma and nonlocal electron kinetics
  • Research on plasma photonic crystals and topological electromagnetic states
  • Advancement of plasma-assisted diagnostics and spectroscopy techniques
  • Studies of microwave propagation and plasma metamaterials
  • Interdisciplinary investigations involving astrophysical plasma and black hole environments

Publications

Chengxun Yuan has authored three academic monographs, published more than 210 SCI-indexed journal articles, and contributed to over 180 conference papers and abstracts. His publications appear in leading journals such as Physical Review E, Physics of Plasmas, Plasma Sources Science and Technology, IEEE Transactions on Plasma Science, Physical Review B, and Plasma Science and Technology.

  • Introduction to the Kinetics of Glow Discharges (IOP Concise Physics, 2018)
  • Dust Plasma Physics (Science Press, 2025)
  • Theory of Electromagnetic Wave-Plasma Interaction (Higher Education Press, 2025)
  • “Formation of inverse electron distribution function in glow discharges with hollow cathode,” Physical Review E, 2026
  • “Topological braiding and dynamic probing of phase transitions across temporal interfaces in non-Hermitian systems,” Physical Review B, 2026
  • “Observation of nontrivial Zak phase induced topological states in glow discharge plasma,” APL Photonics, 2023

Many of Chengxun Yuan’s publications are associated with high-impact journals and collaborative international research programs.[8] His publication record demonstrates continuity in plasma theory, diagnostics, and electromagnetic applications while reflecting broad interdisciplinary collaboration.

Research Impact

The scientific influence of Chengxun Yuan is reflected through a substantial Scopus citation profile comprising more than 1,711 citations and an h-index of 20. His work has contributed to ongoing advancements in plasma diagnostics, plasma-assisted materials science, microwave engineering, and electromagnetic propagation theory. Research findings from his laboratory have been cited across fields including plasma engineering, applied physics, astrophysics, and optical materials science.

Yuan’s investigations into plasma photonic structures and glow discharge systems have influenced experimental and theoretical research on plasma-enabled wave control, atmospheric plasma phenomena, and ionospheric interactions. His studies also support emerging technologies in communication systems, plasma catalysis, and advanced electromagnetic materials.[9]

Award Suitability

Chengxun Yuan’s academic record demonstrates strong suitability for recognition through the International Phenomenological Research Awards. His sustained research productivity, leadership in plasma physics, interdisciplinary collaborations, and contributions to theoretical and applied science collectively represent significant scholarly achievement. His work bridges fundamental plasma theory and technological applications, particularly in areas involving plasma diagnostics, electromagnetic propagation, photonic structures, and plasma-assisted systems.

In addition to publication excellence, Yuan has held numerous leadership and professional positions, including editorial responsibilities and committee memberships in national and international scientific organizations. These contributions indicate sustained engagement with the scientific community and active participation in advancing global plasma research initiatives.[1]

Conclusion

Chengxun Yuan is recognized as a distinguished researcher in plasma physics and electromagnetic wave studies whose contributions have advanced both theoretical understanding and applied plasma technologies. Through extensive publications, interdisciplinary collaborations, and leadership in scientific research, he has established a significant academic presence within the international physics community. His work continues to influence developments in plasma diagnostics, photonic plasma systems, electromagnetic materials, and astrophysical plasma research, supporting ongoing innovation in modern physical science.

References

  1. Harbin Institute of Technology. (2026). Curriculum Vitae of Chengxun Yuan.
  2. Elsevier. (n.d.). Scopus author details: Chengxun Yuan, Author ID 36451487300. Scopus. https://www.scopus.com/authid/detail.uri?authorId=36451487300
  3. Yuan, C., et al. (2020). Formation of inverse electron distribution function and absolute negative conductivity in nonlocal plasma of a dc glow discharge. Physical Review E, 101, 031202. https://doi.org/10.1103/PhysRevE.101.031202
  4. Yuan, C., Zhou, Z., and collaborators. (2025). Research Progress of Plasma Photonic Crystals and Topological Properties. Laser & Optoelectronics Progress. Physical Review E, 101, 031202. http://dx.doi.org/10.3788/LOP250929
  5. Bogdanov, E. A., Kudryavtsev, A. A., and Yuan, C. (2026). Formation of inverse electron distribution function in glow discharges with hollow cathode. Physical Review E, 113, 045214. https://doi.org/10.1103/fbby-qq8z
  6. Li, J., Yao, J., Yuan, C., et al. (2023). Observation of nontrivial Zak phase induced topological states in glow discharge plasma. APL Photonics, 8, 066102. https://doi.org/10.1063/5.0147168
  7. Chen Zhou, Jingfeng Yao, Chengxun Yuan, et al. (2022). Determination of organic impurities by plasma electron spectroscopy in non-local plasma at intermediate and high pressures. Plasma Sources Science and Technology, 31, 107001. https://iopscience.iop.org/article/10.1088/1361-6595/ac91a1/meta
  8. Yuan, C., Kudryavtsev, A. A., and Demidov, V. I. (2018). Introduction to the Kinetics of Glow Discharges. IOP Concise Physics. https://iopscience.iop.org/book/mono/978-1-64327-060-9
  9. Yuan, C., et al. (2024). Topological States Decorated by Twig Boundary in Plasma Photonic Crystals. Advanced Optical Materials, 12(17), 2303244. https://doi.org/10.1002/adom.202303244

Yury Kozhedub | Physics and Astronomy | Cutting-Edge Phenomenological Research Award

Dr.Yury Kozhedub | Physics and Astronomy | Cutting-Edge Phenomenological Research Award

Senior Scientist at Saint-Petersburg State University | Russia 

Dr. Yury Kozhedub is a distinguished physicist and senior researcher whose scientific career is marked by excellence in theoretical and computational physics, particularly in quantum electrodynamics (QED), relativistic atomic structure, and high-precision spectroscopy. He holds advanced degrees in physics, including a Ph.D. earned with distinction from Saint Petersburg State University, where he has since progressed through academic and research ranks to become a senior scientist in the Department of Physics. His early academic foundation, built on rigorous training in quantum theory and atomic physics, paved the way for a prolific research career dedicated to uncovering the fundamental interactions between matter and radiation under extreme conditions. Dr. Yury Kozhedub’s extensive professional experience includes leading and collaborating on numerous national and international research projects supported by the Russian Foundation for Basic Research, the President of the Russian Federation, the FAIR Research Center in Germany, and the Chinese Academy of Sciences. His scholarly contributions encompass more than 85 peer-reviewed scientific papers, accumulating 1,077 citations across 531 documents, with an h-index of 19 reflecting both the depth and global recognition of his work. His research focuses on precision QED calculations, relativistic many-body effects, and the study of highly charged ions, which have broad implications for advancing atomic theory, particle interactions, and astrophysical modeling. In addition to his groundbreaking research, Dr. Yury Kozhedub has collaborated with leading international laboratories, including GSI Darmstadt and the Institute of Modern Physics, Lanzhou, contributing to experiments that bridge theoretical predictions with empirical findings. His recent works published in Physical Review Letters and Physical Review A are widely cited for their innovative insights into supercritical Coulomb fields, QED corrections, and fine-structure phenomena. Through his dedication to advancing high-precision atomic physics, Dr. Yury Kozhedub continues to inspire new directions in phenomenological and quantum research, shaping the scientific understanding of complex physical systems and reinforcing his position as a leading contributor to modern physics and astronomy.

Profile: Scopus | Orcid

Featured Publications:

Kozhedub, Y. S. (2025). Effect of electron-electron interaction on pair production in supercritical collisions of highly charged ions. Chinese Physics C.

Kozhedub, Y. S. (2025). Double and single K-shell-vacancy production of xenon atoms by 95–197-MeV/u Xe54+ ion collisions. Physical Review A.

Kozhedub, Y. S. (2025). Three-dimensional calculations of positron creation in supercritical collisions of heavy nuclei. Physical Review D.

Kozhedub, Y. S. (2024). QED calculations of intra-L-shell singly excited states in Be-like ions. Physical Review A.

Kozhedub, Y. S. (2024). Positron supercritical resonances and spontaneous positron creation in slow collisions of heavy nuclei. Physics of Atomic Nuclei.

Kozhedub, Y. S. (2024). Orbital collapse of the 5g-electrons in the superheavy elements of the 8th period. Optics and Spectroscopy.

Kozhedub, Y. S. (2024). Ground-state potential and dipole moment of carbon monoxide: Contributions from electronic correlation, relativistic effects, QED, adiabatic correction, and nonadiabatic correction. Physical Review A.

Kozhedub, Y. S. (2024). Orbital collapse and dual states of the 5g electrons in superheavy elements. Physical Review A.