Personal profile
In Korean
장헌영 교수(자연과학대학 지구시스템과학부)
Education
o (1990) B.A., Yonsei University
o (1991) M.A., University of Sussex, UK
o (1996) Ph.D., University of Cambridge, UK
Professional Experience
o (2004~Present) Professor, KNU, Daegu
o (1999-2003) KIAS assistent professor, Korea Institute For Advanced Study (KIAS), Seoul
o (1996~1999) Senior Researcher, Samsung Aerospace
o (1999-2003) KIAS assistent professor, Korea Institute For Advanced Study (KIAS), Seoul
o (1996~1999) Senior Researcher, Samsung Aerospace
Research Interests
o Helioseismology and Asteroseismology/Stellar astronomy
o Space science and Solar physics
o Space scinece and its connection to terrestrial climate changes
o various theoretical aspects of astonomy including GRBs, microlensing events, accretion disks, exo-planetary systems
o Space science and Solar physics
o Space scinece and its connection to terrestrial climate changes
o various theoretical aspects of astonomy including GRBs, microlensing events, accretion disks, exo-planetary systems
Major Research Achievements
o Development of tools for solar p-mode analysis
o To investigate the associations between the solar variability and teleconnection indices of Earth's climate
o A Diagnosis of GRB light curve and its statistical properties
o Calculation of Iron line profiles from relativisitic elliptical accretion disks
o To study methods for microlensing applications to stellar astrophysics
o To investigate the associations between the solar variability and teleconnection indices of Earth's climate
o A Diagnosis of GRB light curve and its statistical properties
o Calculation of Iron line profiles from relativisitic elliptical accretion disks
o To study methods for microlensing applications to stellar astrophysics
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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Differential Rotation of Recurrent Sunspots in Solar Cycles 23–25
Ji, H. G., Oh, S. J., Yeo, J. I. & Chang, H. Y., Jan 2026, In: Journal of the Korean Astronomical Society. 59, 1, p. 45-56 12 p.Research output: Contribution to journal › Article › peer-review
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Occurrence Rate of Sunspots in Solar Cycles 12−25
Kim, J. H. & Chang, H. Y., 2026, In: Journal of Astronomy and Space Sciences. 43, 1, p. 27-34 8 p.Research output: Contribution to journal › Article › peer-review
Open Access -
Sunspot numbers and spotless days around solar minimum
Chang, H. Y., 15 Jan 2026, In: Advances in Space Research. 77, 2, p. 2732-2738 7 p.Research output: Contribution to journal › Article › peer-review
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Predicting Solar Magnetic Activity from Sph and Seismic Parameters Using Random Forest Regression
Kim, K. B. & Chang, H. Y., 10 Oct 2025, In: Astrophysical Journal. 992, 1, 99.Research output: Contribution to journal › Article › peer-review
Open Access -
Properties of Solar, Interplanetary, and Geomagnetic Index in Active Days
Chang, H. Y., Jun 2025, In: Journal of the Korean Astronomical Society. 58, 2, p. 281-290 10 p.Research output: Contribution to journal › Article › peer-review