Contact Information
Royal Observatory of Belgium (ROB)
Ringlaan 3
B-1180 Brussels
Belgium
Tel. +32-0486-800-041
+82-10-3110-6790
E-mail: daye.lim@ksb-orb.be
daye.lim@kuleuven.be
dayelim38@gmail.com
ORCiD: 0000-0001-9914-9080
WoS Researcher ID: HPF-1699-2023
Scopus: 55694295500
Academic Career
16 Aug 2025 - Present
Post-doc
Royal Observatory of Belgium
16 Aug 2024 - 15 Aug 2025
Post-doc
KU Leuven
16 Aug 2023 - 15 Aug 2024
Post-doc
Royal Observatory of Belgium
(Joint position between KU Leuven and the Royal Observatory of Belgium)
15 Aug 2022 - 14 Aug 2023
Post-doc
KU Leuven
(Joint position between KU Leuven and the Royal Observatory of Belgium)
02 Mar 2020 – 31 Jul 2022
Post-doc
Kyung Hee University
Education
02 Mar 2013 – 19 Feb 2020
Ph.D. in Space Science
Advisor: Prof. Yong-Jae Moon
Thesis: Sausage Oscillations in a Plasma Cylinder and Forecasting of Major Solar Flares School of Space Research
Kyung Hee University, Korea
02 Mar 2009 – 20 Feb 2013
B.S. in Science
Advisor: Prof. Gwangson Choe
Thesis: Solar Flare Hard X-ray Sources
Department of Astronomy and Space Science
Kyung Hee University, Korea
Research Interests
MHD Waves, Solar EUV, Solar Flares, Stellar Flares, Space Weather, QPPs, EUV Brightenings
Research Skills
IDL, Solar Software Maple, Python 3, Keras, Fortran 90,
Observational Data – SDO/HMI, SDO/AIA, STEREO/EUVI, SolO/EUI HRIEUV,
Meta-Analysis, Deep Learning
Research Experience
Postdoctoral Researcher
Aug 2022 – Present
KU Leuven & Royal Observatory of Belgium
Conducted investigations quasi-periodic pulsations of small-scale EUV transient brightenings detected with SolO/EUI, utilising the Automated Flare Inference of Oscillations code, Ensemble Empirical Mode Decomposition, and Wavelet analysis
Analysed MHD kink waves in simulated coronal loops and fan-spine structures using synthetic EUV 171/174 Å data generated from PLUTO and Bifrost codes, respectively, comparing results with SolO/EUI observations
Examined the properties of MHD kink waves in various coronal regions using SolO/EUI observations, employing advanced techniques including cross-correlation to mitigate spacecraft jitter, wavelets optimized whitening and multi-scale Gaussian normalization to enhance coronal structures, motion magnification to amplify transverse amplitudes and Auto-NUWT for automated wave tracking and analysis
Performed a meta-analysis of MHD kink waves observed with imaging instruments (SDO/AIA and SolO/EUI) to investigate their energy flux-wave frequency distribution and total energy contribution, aiming to assess the role of high-frequency kink waves in coronal heating
Collaborated with the SolO/EUI PI operation team, contributing to the planning instrument operational requests and monitoring observed EUI data
Developed and maintained a comprehensive data catalogue for SolO/EUI observations, ensuring up-to-date accessibility for the research community
Coordinated a high-cadence (1-second) Solar Orbiter observing plan with IRIS, DKIST, Hinode, and SolO/SPICE and PHI to study rapid dynamics in the solar atmosphere
Mar 2020 – July 2022
Kyung Hee University
Investigated optimal EUV/UV channel combinations for image translation using a deep learning algorithm (cGAN) to provide insights for future smallscale deep space solar missions
Formulated a mathematical model for slow MHD waves in stellar coronal loops, providing a theoretical framework to explain quasi-periodic pulsations in stellar flares
Solving an initial value problem for studying higher harmonics of MHD sausage waves in solar coronal loops and analysing oscillation parameters from modelling results using the Fourier and wavelet transforms
Ph.D. Candidate
Mar 2014 - Feb 2020
Kyung Hee University
Formulated a mathematical model for MHD sausage waves in solar coronal loops surrounded by strong twisted magnetic fields
Developed ensemble-based solar flare forecasting models using SDO/HMI photospheric magnetic field data
Developed a 2.5D resistive MHD numerical simulation code in Fortran 90 to investigate plasma redistribution during magnetic reconnection between multiple coronal loop strands
Educational Activities
May - Jun 2025
Master’s Space Weather Project, KU Leuven
Guided students on
“Unveiling Statistical Links Between QuasiPeriodic Pulsation Characteristics and Active Region Magnetic Dynamics”
Jan - Mar 2025
Master’s Space Weather Project, KU Leuven
Assessed Master theses and supervised the writing of an article titled
“Quasi-periodic pulsations in 20-second cadence TESS flares”
for a scientific journal
May 2024 Workshop Session Leader, ROB
Delivered a hands-on session as part of the course “Solar Physics and Space Weather – Solar Orbiter”, teaching participants how to use Python code and Jhelioviewer to download and visualise solar observations
Sep – Dec 2023
Bachelor Project, KU Leuven
Supervised a project titled
“MHD Waves in a Coronal Loop as a Magnetic Cylinder”
Mar – Jun 2023
Master’s Space Weather Project, KU Leuven
Guided students on
“Statistical Relationships between Kink Oscillations and Active Region Magnetic Parameters”
Sep - Dec 2021
Bachelor Project, Kyung Hee University
Mentored a project titled
“Predicting Solar Flare Occurrence Using Unsupervised Deep Learning Algorithm”
Research Grants
Jul 2025
Approved, TESS Director’s Discretionary Targets proposal on
“TESS monitoring of flaring CHEOPS targets”
Jul 2025
Time allocation: 176 orbits, priority 3 (low) CHEOPS AO-6 proposal titled
“Probing rapid quasi-periodic pulsations in flares of active Solar-like stars” (PR260003)
Jul 2024
EUR 1,335.48
Competitive travel grant awarded by FWO (Fonds Wetenschappelijk Onderzoek, Research Foundation Flanders) for international conference presentation
Jun 2024
EUR 427.22
Competitive travel grant awarded by FWO (Fonds Wetenschappelijk Onderzoek, Research Foundation Flanders) for international conference presentation
Jun 2021 – Jul 2022
KRW 95,500,000 (EUR 60,000)
Research Grant (2021R1I1A1A01040372), National Research Foundation of Korea, “Theoretical and Numerical Modelling of Quasi-Periodic Pulsations Manifested in Flare Emissions”
Patents
05 Aug 2019
South Korean-granted patent (10-2009460), “Device and method for forecasting solar flare based on SDO/HMI vector magnetic fields”, Yong-Jae Moon and Daye Lim
Administration Experience
2018 - 2021
Grant Budget Management, Kyung Hee University
Managed the research grant budget for the group led by Prof. Yong-Jae Moon
Science Communication
Daye Lim, David Berghmans, Tom Van Doorsselaere, Cis Verbeeck, and Koen Stegen, 2024, “Het raadsel van de hete zonnecorona (The mystery of the hot solar corona)”, ZENIT (Dutch Astronomy magazine): https://zenitonline.nl/product/zenit-april-3/
Interview and feature article, 2023, “Plasmasadetta ja magneettikenttien solmuja – Luotaimet avaavat näkymiä Auringon koronaan (Plasma rain and knots of magnetic fields – Spacecraft open windows into the Sun’s corona)”, Tähdet ja avaruus (Finland Astronomy magazine): https://tiedekirja.fi/fi/tahdet-ja-avaruus-2023-6
Invited Talks
05 Nov 2024
AAPPS-DPP 2024, Malaysia
“The Role of High-Frequency Transverse Oscillations in Coronal Heating”
13 Jul 2024
COSPAR 2024 45th Scientific Assembly, Korea
“Waves in the Solar Corona and Their Heating”
10 Oct 2023
1-day BINA/BIPASS Meeting, Belgium
“Decayless Transverse Oscillations in the Solar Corona”
Scientific Service
Reviewer for grant proposal
- National Science Centre, Poland, 2025, 1
Reviewer for peer-review journals
- Journal of the Korean Physical Society, 2025, 1
- The Astrophysical Journal Supplement, 2025, 1
- Nature Astronomy, 2025, 1
- Journal of Geophysical Research – Space Physics, 2025, 1
- The Astrophysical Journal Supplement, 2024, 1
- The Astrophysical Journal Supplement, 2023, 1
- Advances in Space Research, 2022, 1
Leadership and Committees
- Co-Chair, Solar Orbiter Atmospheric Heating Remote Sensing Working Group, Sep 2024 – Present
- Session Chair, COSPAR 2024 45th Scientific Assembly, Jul 2024
- Session Chair, 1st Waves and Instabilities in the Solar Atmosphere, Jun 2023
- SOC, Young Korean Scientists for the Sun and Space Weather, Scientific Organising Committee, Jan 2015 – Dec 2017
Participation in School Program
Jun 2018
Space Weather REDI Bootcamp Summer
NASA CCMC, USA
Jul 2011
The Solar/Space MHD International Summer School
University of Science and Technology of China, China
Awards
2025
Best Poster Award
Spanish-German WE-Heraeus-Seminar “Interdisciplinary Physics of the Sun”
Wilhelm and Else Heraeus Foundation
2021
Encouragement Award
The Idea Contest for Space Weather Data
Korean Space Weather Center
2020
Excellence Award
The Artificial Intelligence Contest for Predicting Space Weather Disaster
National Radio Research Agency
2019
Top Award
The Young Scientist Award
Center for Women in Science, Engineering and Technology – Korean Astronomical Society
Seminars
16 May 2025
Solar Physics and Space Weather, Royal Observatory of Belgium
“Quasi-periodic pulsations in EUV brightenings”
27 Mar 2025
Centre for mathematical Plasma-Astrophysics, KU Leuven
“Quasi-periodic pulsations in EUV brightenings”
30 Jul 2024
Solar and Space Weather Group, Korea Astronomy and Space Science Institute
“The role of high-frequency transverse oscillations in coronal heating”
23 Jul 2024
School of Space Research, Kyung Hee University
“The role of high-frequency transverse oscillations in coronal heating”
15 Feb 2024
Centre for mathematical Plasma-Astrophysics, KU Leuven
“Decayless transverse oscillations detected with SolO/EUI HRI and their role in coronal heating”
26 Jan 2024
Solar Physics and Space Weather, Royal Observatory of Belgium “Decayless transverse oscillations detected with SolO/EUI HRI and their role in coronal heating”
25 Nov 2022
Solar Physics and Space Weather, Royal Observatory of Belgium
“MHD sausage oscillations in solar coronal loops”
27 Oct 2022
Centre for mathematical Plasma-Astrophysics, KU Leuven
“MHD sausage oscillations in solar coronal loops”
29 Jun 2022
Solar and Space Weather Group, Korea Astronomy and Space Science Institute
“Modeling of MHD oscillations in coronal loops”
22 Dec 2021
Solar and Space Weather Group, Korea Astronomy and Space Science Institute
“Slow magnetoacoustic oscillations in stellar coronal loops”
Software and Data Products
Solar Orbiter/EUI Data Sequence Catalogue
Developed and continuously updated a publicly available data catalogue that compiles EUI image sequences, facilitating broader use of Solar Orbiter data by the heliophysics community.
Open access on GitHub (SIDC/ROB Public Repository): https://gitlab-as.oma.be/sidcpublic/euipublic/-/tree/master/soloEUI/Datalist
Major Solar Flare Forecast Board
Developed a solar flare prediction model (Lim et al. 2019, ApJ, 885, 35) and operate a publicly accessible online board that displays the real-time forecast of major solar flares. The board provides open access to up-to-date flare probability estimates, supporting both researchers and the broader space weather community.
Open access on GitHub (Personal Public Repository): https://dayelim.github.io/MajorSolarFlareForecastBoard/
Conferences
01 Jul 2025
Interdisciplinary Physics of the Sun, Spanish‐German WEHeraeus-Seminar, Germany
“Quasi-periodic pulsations in EUV brightenings detected with Solar Orbiter/EUI”, Poster
23 Jun 2025
Hinode 18 - IRIS 16 Meeting, UK
“Quasi-periodic pulsations in EUV brightenings detected with Solar Orbiter/EUI”, Oral talk
23 Oct 2024
EUI-STIX Consortium Meeting, Switzerland
“Quasi-periodic pulsations in campfires”, Oral talk
09 Sep 2024
17th European Solar Physics Meeting, Italy
“Characteristics and energy flux distributions of decayless transverse oscillations depending on coronal regions”, Poster
25 Jun 2024
11th Coronal Loops Workshop, Spain
“Characteristics and energy flux distributions of decayless transverse oscillations depending on coronal regions”, Oral talk
21 May 2024
The Coronal Cooling Conference: rain, prominences and eruptions, Belgium
“The role of high-frequency oscillations in coronal heating”, Poster
14 Sep 2023
The 30th EUI Consortium Meeting, France
“Transverse oscillations in the solar corona detected by the SolO/EUI HRIEUV data with high cadences”, Oral talk
22 Jun 2023
Waves and Instabilities in the Solar Atmosphere, UK
“Energy properties of transverse oscillations of solar coronal loops”, Oral talk
30 May 2023
AGU Chapman on Advances in Understanding Alfven Waves in the Sun and the Heliosphere, Germany
“Rapid oscillations in a solar active region observed by the EUI onboard SolO”, Oral talk
26 Jan 2023
The 29th EUI Consortium Meeting, Online
“Rapid oscillations in a solar active region observed by Solar Orbiter/EUI”, Oral talk
09 Sep 2022
Centre for mathematical Plasma-Astrophysics Retrospective in Honor of Prof. Stefaan Poedts Meeting, Belgium
“Slow magnetoacoustic oscillations in stellar coronal loops”, Oral talk
14 Jul 2022
National Astronomy Meeting, Online
“Slow magnetoacoustic oscillations in stellar coronal loops”, Oral talk
3 Aug 2021
Solar Heliospheric and INterplanetary Environment Meeting, Online
“Selection of three (E)UV wavelengths for solar satellite missions by deep learning”, Poster
11 Dec 2020
American Geophysical Union Fall Meeting, Online
“Effect of higher radial harmonics in sausage oscillations in coronal loops”, Poster
16 Sep 2019
Machine Learning in Heliophysics, Netherlands
“Ensemble forecasting of major solar flares with short-, mid-, and long-term active region properties”, Poster
27 Aug 2018
International Astronomical Union General Assembly, Austria
“Sausage oscillations in a plasma cylinder with a surface current”, Poster
7 Nov 2017
Asia-Pacific Solar Physics Meeting, Japan
“Forecast of solar major flare occurrence rates based on vector magnetic parameters using SDO/HMI data”, Poster
22 August 2017
American Astronomical Society Solar Physics Division Meeting, USA
“Forecast of a major flare occurrence rate within a day using SDO/HMI data”, Oral talk
24 Apr 2016
European Geosciences Union General Assembly, Austria
“In what magnetic environment are coronal loop plasmas located?”, Poster
3 Nov 2015
Asia-Pacific Solar Physics Meeting, Korea
“Magnetic configurations embedding coronal loop plasmas”, Oral talk
10 Aug 2015
International Astronomical Union General Assembly, USA
“What magnetic structures harbor coronal loop plasmas?”, Oral talk