*Students and Postdoctoral Fellows in the HeRA Group are denoted in Italic font.
M.-Y. Lin, R. Ilie, and A. Glocer, (2025). Limits on the efficacy of wave-particle interaction on the energization and transport of atomic and molecular heavy ionospheric ions. Journal of Geophysical Research: Space Physics, 130, e2024JA033523. https://doi.org/10.1029/2024JA033523
J. H. Liu, R. Ilie, M. W. Liemohn, and G. Toth (2025), The Role of Inductive Electric Fields in Shaping the Morphology, Asymmetry, and Energy Content of the Storm-Time Ring Current, Journal of Geophysical Research: Space Physics, 130, e2024JA033577. https://doi.org/10.1029/2024JA033577
M. Liemohn, J-M. Jahn, R. Ilie, N. Ganushkina, D. Welling, H. Elliott, M. Burleigh, K. Doublestein, S. Colon‐Rodriguez, P. Dredger, P. Valek (2024). Reconstruction Analysis of Global Ionospheric Outflow Patterns. Journal of Geophysical Research, Space Physics. 129. 10.1029/2023JA032238
A. Garg, and R. Ilie, (2024). Work-in-Progress: Gamification of Electromagnetism for Engineering Education, 2024 IL-IN Section Conference, University of Illinois Chicago, https://nsfpar.research.gov/services/metadata/file/10572294
A. Wefel, and R. Ilie (2024), Utilizing Virtual Reality for Electromagnetism Instruction, 2024 IL-IN Section Conference
University of Illinois Chicago, https://nsfpar.research.gov/services/metadata/file/10572294
R. Ilie, Lin, M.Y., Bashir, M. F., Majumder, A. (2023). A review of N+ observations in the ionosphere-magnetosphere system. Frontiers in Astronomy and Space Sciences, 10, 1224659, https://doi.org/10.3389/fspas.2023.1224659
J. H. Liu, R. Ilie, J. E. Borovsky, and M. W. Liemohn (2022). A new mechanism for early-time plasmaspheric refilling: The role of charge exchange reactions in the transport of energy and mass throughout the ring current— plasmasphere system. Journal of Geophysical Research: Space Physics, 127, e2022JA030619, https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022JA030619
J. E. Borovsky, J. H. Liu, R. Ilie, and M. W. Liemohn (2022) Charge- Exchange Byproduct Cold Protons in the Earth’s Magnetosphere. Front. Astron. Space Sci. 8:785305. doi: 10.3389/fspas.2021.785305, https://www.frontiersin.org/articles/10.3389/fspas.2021.785305/full
M. Y. Lin and R. Ilie (2022) A Review of Observations of Molecular Ions in the Earth’s Magnetosphere- Ionosphere System. Front. Astron. Space Sci. 8:745357. doi: 10.3389/fspas.2021.745357, https://www.frontiersin.org/articles/10.3389/fspas.2021.745357/full
R. Ilie, M. F. Bashir, and E. Kronberg (2021), A brief review of the ring current and outstanding problems, Geophysical Monograph Series, https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/9781119815624.ch20
E. A. Kronberg , E. E. Grigorenko, R. Ilie , L. Kistler and D. Welling (2021), Impact of ionospheric ions on magnetospheric dynamics, Book Chapter, AGU Geophysical Monograph Series, https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1002/9781119815624.ch23
M. F. Bashir, and R. Ilie (2021), First observation of N+ EMIC waves, JGR, https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JA028716
J.H.Liu and R. Ilie (2021), The effects of inductive electric field on the spatial and temporal evolution of inner magnetospheric ring current, JGR, https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2020JA028554
M.Y Lin, R.Ilie, and A. Glocer (2020), The Contribution of N+ ions to Earth's Polar Wind, Geophysical Research Letters, 47, https://doi.org/10.1029/2020GL089321
E. A. Kronberg, F. Gastaldello, S. Haaland, A. Smirnov, M. Berrendorf, S. Ghizzardi, K. D. Kuntz, N. Sivadas, R. C. Allen, A. Tiengo, R. Ilie, Y. Huang, and L. Kistler (2020), Prediction and understanding of soft proton contamination in XMM-Newton: a machine learning approach, Astrophysical Journal, https://arxiv.org/abs/2009.13156
M. F. Bashir, L. Chen and R. Ilie (2019), Theoretical prediction of asymmetric instability of drift kinetic Alfven waves in anisotropic plasmas, 124, (6), 4414-4423, https://doi.org/10.1029/2019JA026615
H.S. Trung, M. W. Liemohn, R. Ilie (2019), Steady state characteristics of the terrestrial geopauses, 124, 5070-5081, https://doi.org/10.1029/2019JA026636
M. F. Bashir and R. Ilie (2018), A new N+ band of electromagnetic ion cyclotron waves in multi-ion cold plasmas, Geophysical Research Letters, 45, 10150-10159.https://doi.org/10.1029/2018GL080280
M. F. Bashir, R. Ilie, and G. Murtaza (2018), Kinetic instability of electrostatic ion cycl"tron waves in inter-penetrating plasmas, Physics of Plasmas, 25, 052114, https://doi.org/10.1063/1.5025843
M. W. Liemohn, N. Y. Ganushkina, D. De Zeeuw, L. Rastaetter, M. Kuznetsova, D. T. Welling, G. Toth, R. Ilie, T. I. Gombosi, and B. Vander Holst (2018), Real-time SWMF at CCMC: assessing the Dst Output From continuous operational simulations, Space Weather, 16, 1583-1603, https://doi.org/10.1029/2018SW001953
M. W. Liemohn, S. Xu, C. Dong, S. Bougher, B. Johnson, R. Ilie, D. De Zeeuw (2017), Ionospheric control of the dawn-dusk asymmetry of the Mars magnetotail current sheet, J. Geophys. Res. Space Physics, 122, 6397-6414, https://doi.org/10.1002/2016JA023707
R. Ilie, L. K. S. Daldorff, M. W. Liemohn, G. Toth, A. A. Chan (2017), Calculating the inductive electric field in the terrestrial magnetosphere, J. Geophys. Res. Space Physics, 122, 5391-5403, https://doi.org/10.1002/2017JA023877
R. Ilie and M. W. Liemohn (2016), The outflow of ionospheric nitrogen ions: a possible tracer for the altitude dependent transport and energization processes of ionospheric plasma, J. Geophys. Res. Space Physics, 121, 9250-9255, https://doi.org/10.1002/2015JA022162
R.M. Katus, M.W. Liemohn, A.M. Keesee, T.J. Immel, R. Ilie, D. T. Welling, N. Yu. Ganushkina, N.J. Perlongo, and A. J. Ridley (2016), Geomagnetic disturbance intensity dependence on the universal timing of the storm peak, J. Geophys. Res. Space Physics, 121, 7561-7571, https://doi.org/10.1002/2016JA022967
M. W. Liemohn, N. Y. Ganushkina, R. Ilie, D. T. Welling (2016), Challenges associated with near-Earth nightside current systems, J. Geophys. Res. Space Physics,121, 6763–6768, https://doi.org/10.1002/2016JA022948
N. Y. Ganushkina, M. W. Liemohn, S. Dubyagin, I. A. Daglis, I. Dandouras, D. L. De Zeeuw, Y. Ebihara, R. Ilie, R. Katus, M. Kubyshkina, S. E. Milan, S. Ohtani, N. Ostgaard, J. P Reistad, P. Tenfjord, F. Toffoletto, S. Zaharia, O. Amariutei (2015), Defining and resolving current systems in geospace, J. Annales Geophysicae, 33, 1369-1402, https://doi.org/10.5194/angeo-33-1369-2015
R. Ilie, N. Ganushkina, G. Toth, S. Dubyagin, and M. W. Liemohn (2015), Testing the magnetotail configuration based on observations of low-altitude isotropic boundaries during quiet times, J. Geophys. Res. Space Physics, 120, 10,557–10,573, https://doi.org/10.1002/2015JA021858
R. Ilie, M. W. Liemohn, G. Toth, N. Yu Ganushkina, and L. K. S. Daldorff (2015), Assessing the role of oxygen on ring current formation and evolution through numerical experiments. J. Geophys. Res. Space Physics, 120, 4656–4668. https://doi.org/10.1002/2015JA021157
K. Seki, A. Nagy, C. M. Jackman, F. Crary, D. Fontaine, P. Zarka, P. Wurz, A. Milillo, J. A. Slavin, D. C. Delcourt, M. Wiltberger, R. Ilie, X. Jia, S. A. Ledvina and R. W. Schunk (2015), A review of general processes related to plasma sources and losses for solar system magnetospheres, Space Science Reviews, Volume 192, Issue 1, pp 27-89, https://doi.org/10.1007/s11214-015-0170-y
D. Welling, M. Andre, I. Dandouras, D. Delcourt, A. Fazakerley, D. Fontaine, J. Foster, R. Ilie, L. Kistler, J. Lee, M. W. Liemohn, J. A. Slavin, C.-P. Wang, M. Wiltberger, A. Yau (2015), The Earth: Plasma Sources, Losses, and Transport, Processes, Space Science Reviews, 2015, Volume 192, Issue 1, pp 145-208, https://doi.org/10.1007/s11214-015-0187-2
R. M. Katus, M. W. Liemohn, E. L. Ionides, R. Ilie, D. Welling, and L. K. Sarno-Smith (2015), Statistical analysis of the geomagnetic response to different solar wind drivers and the dependence on storm intensity, J. Geophys. Res. Space Physics, 120, 310–327, https://doi.org/10.1002/2014JA020712
R. Ilie, R. Skoug, H. Funsten, M. W. Liemohn, J. Bailey, M. Gruntman (2013), The impact of geocoronal density on ring current development, JASTP, 99, 92-103, https://doi.org/10.1016/j.jastp.2012.03.010
R. Ilie, R. Skoug, P. W. Valek, H. Funsten, A. Glocer (2013), Global view of the inner magnetosphere composition during storm time, Journal of Geophysical Research, 118, 7074-7084, https://doi.org/10.1002/2012JA018468
P. W. Valek, J. Goldstein, D. J. McComas, R. Ilie, N. Buzulukova, M. -C. Fok, J. D. Perez (2012), Oxygen-Hydrogen differentiated observations from TWINS: The 22 July 2009 storm, Journal of Geophysical Research, 118, 3377–3393, https://doi.org/10.1002/jgra.50204
R. Ilie, M. W. Liemohn, G. Toth, R. Skoug (2012), Kinetic model of the inner magnetosphere with arbitrary magnetic field, Journal of Geophysical Research, 117, A04208, https://doi.org/10.1029/2011JA017189
M. W. Liemohn, D. L. De Zeeuw, R. Ilie, N. Y. Ganushkina (2012), Deciphering magnetospheric cross-field currents, Geophysical Research Letters, 38, L20106, https://doi.org/10.1029/2011GL049611
C. Cattell, J. Dombeck, A. Preiwisch, S. Thaller, P. Vo, L. B. Wilson, J. Wygant, S. B. Mende, H. U. Frey, R. Ilie, G. Lu (2011), Observations of a high-latitude stable electron auroral emission at 16 MLT during a large substorm, Journal of Geophysical Research, 116, A07215, https://doi.org/10.1029/2010JA016132
M. W. Liemohn, R. Ilie, N. Y. Ganushkina, A. J. Ridley, J. U. Kozyra, M. F. Thomsen, J. E. Borovsky (2011), Testing the necessity of transient spikes in the storm time ring current drivers, Journal of Geophysical Research, 116, A04226, https://doi.org/10.1029/2010JA015914
R. Ilie, M. W. Liemohn, J. U. Kozyra, J.Borovsky (2010), An investigation of the magnetosphere-ionosphere response to real and idealized CIR events through global MHD simulations, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 466, issue 2123, pp. 3279-3303. https://doi.org/10.1098/rspa.2010.0074
N. Y. Ganushkina, M. W. Liemohn, M. V. Kubyshkina, R. Ilie, H. J. Singer (2010), Distortions of the magnetic field by storm-time current systems in Earth's magnetosphere, J. Ann. Geophysics, 28, 123-140, https://doi.org/10.5194/angeo-28-123-2010
R. Ilie, M. W. Liemohn, A. J. Ridley (2010), Effect of smoothed solar wind inputs on global modeling results, Journal of Geophysical Research, Volume 115, Issue A1, 115, A01213. https://doi.org/10.1029/2009JA014443
M. W. Liemohn, J. C. Zhang, M. F. Thomsen, J. E. Borovsky, J. U. Kozyra, and R. Ilie (2008), Plasma properties of superstorms at geosynchronous orbit: How different are they?, Geophysical Research Letters, 35, L06S06, https://doi.org/10.1029/2007GL031717
R. Ilie, M. W. Liemohn, M. F. Thomsen, J. E. Borovsky, and J. Zhang (2008), Influence of epoch time selection on the results of superposed epoch analysis using ACE and MPA data, Journal of Geophysical Research, 113, A00A14, https://doi.org/10.1029/2008JA013241
R. Ilie, G. B. Thompson, D. D. Reid (2006), A numerical study of the correspondence between paths in a causal set and geodesics in the continuum, Class. Quantum Grav. 23, 3275-32 85. https://doi.org/10.1088/0264-9381/23/10/002