Skip to content
Home » Publications

Publications



† denotes first/corresponding authored publication; * denotes advisee

     

    2023

  1. Yang, K. E.*, Sun, X., Kerr, G. S., & Hudson, H. S. “A Possible Mechanism for ‘Late Phase’ in Stellar White-Light Flares”, Astrophys. J., under review
  2. Liu, Y., Török, T., Titov, V. S., Leake, J. E., Sun, X., & Jin, M. “Electric-Current Distribution and Eruptive Activity in Solar Active Regions”, Astrophys. J., under review
  3. Milić, I., Centeno, R., Sun, X., Rempel, M., & de la Cruz Rodríguez, J. “Spatial resolution effects on the solar open flux estimates”, Astron. Astrophys., in press
  4. Polito, V., Peterson, M., Glesener, L., Testa, P., Yu, S., Reeves, K. K., & Sun, X. “Multi-wavelength observations and modelling of a microflare: constraining non-thermal particle acceleration”, Front. Astron. Space Sci., in press
  5. Liu, J.*, Sun, X.†, Schuck, P. W., Jaeggli, S. A., Welsch, B. T., & Quintero Noda, C. “Large Photospheric Doppler Shift in Solar Active Region 12673: I. Field-Aligned Flows”, Astrophys. J., 955, 40 [ADS]
  6. Centeno, R., Milić, I., Rempel, M., Nitta, N. V., & Sun, X. “Limitations and Biases in the Retrieval of the Polar Magnetic Field. I. The Role of the Magnetic Filling Factor in Milne-Eddington Inversions of Simulated Hinode/SP Data”, Astrophys. J., 951, 23
  7. Mahajan, S. S.*, Sun, X., & Zhao, J. “Removal Of Active Region Inflows Reveals a Weak Solar Cycle Scale Trend In Near-Surface Meridional Flow”, Astrophys. J., 950, 63 [ADS]
  8. Lynch, B. J., Viall, N. M., Higginson, A. K., Zhao, L., Lepri, S. T., & Sun, X. “The S-Web Origin of Composition Enhancement in the Slow-to-Moderate Speed Solar Wind”, Astrophys. J., 949, 14

    9.  

    2022

  9. Kucera, T. A., Luna, M., Török, T., Muglach, K., Karpen, J. T., Downs, C., Sun, X., Thompson, B. J., & Gilbert, H. R. “Comparison of Two Methods for Deriving the Magnetic Field in a Filament Channel”, Astrophys. J., 940, 34
  10. Liu, L., Zhou, Z., Wang, Y., Sun, X., & Wang, G. “On the Nature of Photospheric Horizontal Magnetic Field Increase in Major Solar Flares”, Astrophys. J. Lett., 934, L33
  11. Will, L.*, Avallone, E. A.*, & Sun, X.† “The Dependence of Solar Flare Magnitude on sunspot Area During Activity Cycle 24”, Res. Note AAS, 6, 37 [ADS]
  12. Li, T., Sun, X., Hou, Y., Chen, A., Yang, S., & Zhang, J. “A New Magnetic Parameter of Active Regions Distinguishing Large Eruptive and Confined Solar Flares”, Astrophys. J. Lett., 926, L14
  13. Kazachenko, M. D., Lynch, B. J., Savcheva, A., Sun, X., & Welsch, B. T. “Toward Improved Understanding of Magnetic Fields Participating in Solar Flares: Statistical Analysis of Magnetic Field within Flare Ribbons”, Astrophys. J., 926, 56
  14. Liu, Y., Griñón-Marín, A. B., Hoeksema, J. T., Norton, A. A., & Sun, X. “On the Hemispheric Bias Seen in Vector Magnetic Field Data”, Sol. Phys., 297, 17
  15. Sun, X.†, Török, T., & DeRosa, M. L. “Torus-Stable Zone Above Starspots”, Mon. Not. R. Astron. Soc., 509, 5075 [ADS]

    16.  

    2021

  16. Lee, J. H.*, Sun, X.†, & Kazachenko, M. D. “Rapid Evolution of Bald Patches in a Major Solar Eruption”, Astrophys. J. Lett., 921, L23 [ADS]
  17. Bobra, M. G., Wright, P. J., Sun, X., & Turmon, M. J. “SMARPs and SHARPs: Two Solar Cycles of Active Region Data”, Astrophys. J. Suppl. Ser., 256, 26
  18. Sun, X.†, Liu, Y., Milić, I., & Griñón-Marín, A. B. “Are the Magnetic Fields Radial in the Solar Polar Region?”, Res. Note AAS, 5, 134 [ADS]
  19. Payne, A. V.* & Sun, X.† “Emerging Dimming as Coronal Heating Episodes”, Astrophys. J., 912, 1
  20. Rast, M., et al. (including Sun, X.) “Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)”, Sol. Phys., 296, 70
  21. Pineci, A. L.*, Sadowski, P., Gaidos, E., & Sun, X. “Proxy-Based Prediction of Solar Extreme Ultraviolet Emission Using Deep Learning”, Astrophys. J. Lett., 910, L25
  22. Sun, X.†, & Cheung, M. C. M. “Non-Neutralized Electric Current of Active Regions Explained as a Projection Effect”, Sol. Phys., 296, 7 [ADS]

    23.  

    2020

  23. Thalmann, J. K., Sun, X., Moraitis, K., & Gupta, M. “Deducing the Reliability of Relative Helicities from Nonlinear Force-free Coronal Models”, Astron. Astrophys., 643, A153
  24. Hoeksema, J. T., Abbett, W. P., Bercik, D. J., Cheung, M. C. M., DeRosa, M. L., Fisher, G. H., Hayashi, K., Kazachenko, M. D., Liu, Y., Lumme, E., Lynch, B. J., Sun. X., & Welsch, B. T. “The Coronal Global Evolutionary Model: Using HMI Vector Magnetogram and Doppler Data to Determine Coronal Magnetic Field Evolution”, Astrophys. J. Suppl. Ser., 250, 28
  25. Fisher, G. H., Kazachenko, M. D., Welsch, B. T., Sun, X., Lumme, E., Bercik, D. J., DeRosa, M. L., & Cheung, M. C. M. “The PDFI_SS Electric Field Inversion Software”, Astrophys. J. Suppl. Ser., 248, 2
  26. Avallone, E. A.* & Sun, X.† “Electric Current Neutralization in Solar Active Regions and Its Relation to Eruptive Activity”, Astrophys. J., 893, 123 [ADS]

    27.  

    2019

  27. Moraitis, K., Sun, X., Pariat, É, & Linan, L. “Magnetic Helicity and Eruptivity in Active Region 12673”, Astron. Astrophys., 528, A50

    28.  

    2018

  28. Wang, T., Ofman, L., Sun, X., Solanki, S. K., & Davila, J. “Effect of Transport Coefficients on Excitation of Flare-Induced Standing Slow-Mode Waves in Coronal Loops”, Astrophys. J., 860, 107
  29. Warren, H. P., Crump, N. A., Ugarte-Urra, I., Sun, X., Aschwanden, M. J., & Wiegelmann, T. “Towards a Quantitative Comparison of Magnetic Field Extrapolations and Observed Coronal Loops”, Astrophys. J., 860, 46

    30.  

    2017

  30. Sun, X.†, & Norton, A. A. “Super-flaring Active Region 12673 Has One of the Fastest Magnetic Flux Emergence Ever Observed”, Res. Note AAS, 1, 24 [ADS]
  31. Liu, Y., Sun, X., Török, T., Titov, V. S., & Leake, J. E. “Electric-Current Neutralization, Magnetic Shear, and Eruptive Activity in Solar Active Regions”, Astrophys. J. Lett., 846, L6
  32. Kazachenko, M. D., Lynch, B. J., Welsch, B., & Sun, X. “A Database of Flare Ribbon Properties From Solar Dynamics Observatory I: Reconnection Flux”, Astrophys. J., 845, 49
  33. Li, S., Su, Y., Zhou, T., van Ballegooijen, A. A., Sun, X., & Ji, H. “High-resolution Observations of Sympathetic Filament Eruptions by NVST”, Astrophys. J., 844, 70
  34. Sun, X.†, Hoeksema, J. T., Liu, Y., Kazachenko, M., & Chen, R. “Investigating the Magnetic Imprints of Major Solar Eruptions with SDO/HMI High-Cadence Vector Magnetograms”, Astrophys. J., 839, 67 [ADS]
  35. Liu, Y., Hoeksema, J. T., Sun, X., & Hayashi, K. “Vector Magnetic Field Synoptic Charts from the Helioseismic and Magnetic Imager (HMI)”, Sol. Phys., 292, 29
  36. Li, Y., Sun, X., Ding, M. D., Qiu, J., & Priest, E. R. “Imaging Observations of Magnetic Reconnection in a Solar Eruptive Flare”, Astrophys. J., 835, 190
     

    2016

  37. Arden, W. M., Norton, A. A., Sun, X., & Zhao, X. “Comparison of Coronal Extrapolation Methods for Cycle 24 Using HMI Data”, Astrophys. J., 823, 21

    38.  

    2015

  38. Zhu, C., Liu, R., Alexander, D., Sun, X., & McAteer, R. T. J. “Complex Flare Dynamics Initiated by a Filament-Filament Interaction”, Astrophys. J., 813, 60
  39. Joshi, N. C., Liu, C., Sun, X., Wang, H., Magara, T., & Moon, Y.-J. “The Role of Erupting Sigmoid in Triggering a Flare with Parallel and Large-scale Quasi-circular Ribbons”, Astrophys. J., 812, 50
  40. DeRosa, M. L., Wheatland, M. S., Leka, K. D., Barnes, G., Amari, T., Canou, A., Gilchrist, S. A., Thalmann, J. K., Valori, G., Wiegelmann, T., Schrijver, C. J., Malanushenko, A., Sun, X., & Régnier, S. “The Influence of Spatial resolution on Nonlinear Force-free Modeling”, Astrophys. J., 811, 107
  41. Wang, T., Ofman, L., Sun, X., Provornikova, E., & Davila, J. M. “Evidence of Thermal Conduction Suppression in a Solar Flaring Loop by Coronal Seismology of Slow-mode Waves”, Astrophys. J. Lett., 811, L13
  42. Kazachenko, M. D., Fisher, G. H., Welsch, B. T., Liu, Y., & Sun, X. “Photospheric Electric Fields and Energy Fluxes in the Eruptive Active Region NOAA 11158”, Astrophys. J., 811, 16
  43. Fisher, G. H., Abbett, W. P., Bercik, D. J., Kazachenko, M. D., Lynch, B. J., Welsch, B. T., Hoeksema, J. T., Hayashi, K., Liu, Y., Norton, A. A., Dalda, A. S., Sun, X., DeRosa, M. L., & Cheung, M. C. M. “The Coronal Global Evolutionary Model: Using HMI Vector Magnetogram and Doppler Data to Model the Buildup of Free Magnetic Energy in the Solar Corona”, Space Weather, 13, 369
  44. Hayashi, K., Hoeksema, J. T., Liu, Y., Bobra, M. G., Sun, X., & Norton, A. A. “The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: Magnetohydrodynamics Simulation Module for the Global Solar Corona”, Sol. Phys., 290, 1507
  45. Sun, X.†, Bobra, M. G., Hoeksema, J. T., Liu, Y., Li, Y., Shen, C., Couvidat, S., Norton, A. A., & Fisher, G. H. “Why Is the Great Solar Active Region 12192 Flare-rich but CME-poor?”, Astrophys. J. Lett., 804, L28 [ADS]
  46. Sun, X.†, Hoeksema, J. T., Liu, Y., & Zhao, J. “On Polar Magnetic Field Reversal and Surface Flux Transport During Solar Cycle 24”, Astrophys. J., 798, 114 [ADS]

    47.  

    2014

  47. Zhu, C., Alexander, D., Sun, X., & Daou, A. “The Role of Interchange Reconnection in Facilitating a Filament Eruption”, Sol. Phys., 289, 4533
  48. Bobra, M. G., Sun, X., Hoeksema, J. T., Turmon, M., Liu, Y., Hayashi, K., Barnes, G., & Leka, K. D. “The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: SHARPs — Space-Weather HMI Active Region Patches”, Sol. Phys., 289, 3549
  49. Hoeksema, J. T., Liu, Y., Hayashi, K., Sun, X., Schou, J., Couvidat, S., Norton, A., Bobra, M., Centeno, R., Leka, K. D., Barnes, G., & Turmon, M. “The Helioseismic and Magnetic Imager (HMI) Vector Magnetic Field Pipeline: Overview and Performance”, Sol. Phys., 289, 3483
  50. Cheng, X., Ding, M. D., Zhang, J., Sun, X., Guo, Y., Wang, Y. M., Kliem, B., & Deng, Y. Y. “Formation of a Double-decker Magnetic Flux Rope in the Sigmoidal Solar Active Region 11520”, Astrophys. J., 789, 93
  51. Aschwanden, M. J., Sun, X., & Liu, Y. “The Magnetic Field of Active Region 11158 during the 2011 February 12-17 Flares: Differences between Photospheric Extrapolation and Coronal Forward-Fitting Methods”, Astrophys. J., 785, 34
  52. Liu, Y., Hoeksema, J. T., Bobra, M., Hayashi, K., Schuck, P. W., & Sun, X. “Magnetic Helicity in Emerging Solar Active Regions”, Astrophys. J., 785, 13
  53. Arden, W. M., Norton, A. A., & Sun, X. “A ‘breathing’ Source Surface for Cycles 23 and 24”, J. Geophys. Res., 119, 1476
  54. Liu, Y., Hoeksema, J. T., & Sun, X. “Test of the Hemispheric Rule of Magnetic Helicity in the Sun Using the Helioseismic and Magnetic Imager (HMI) Data”, Astrophys. J. Lett., 783, L1
  55. Nitta, N. V., Sun, X., Hoeksema, J. T., & DeRosa, M. L. “Solar Cycle Variations of the Radio Brightness of the Solar Polar Regions as Observed by the Nobeyama Radioheliograph”, Astrophys. J. Lett., 780, L23

    56.  

    2013

  56. Sun, X.†, Hoeksema, J. T., Liu, Y., Aulanier, G., Su, Y., Hannah, I. G., & Hock, R. A. “Hot Spine Loops and the Nature of a Late-phase Solar Flare”, Astrophys. J., 778, 139 [ADS]
  57. Rajaguru, S. P., Couvidat, S., Sun, X., Hayashi, K., & Schunker, H. “Properties of High-Frequency Wave Power Halos Around Active Regions: An Analysis of Multi-height Data from HMI and AIA Onboard SDO“, Sol. Phys., 287, 107
  58. Jin, M., Manchester, W. B., van der Holst, B., Oran, R., Sokolov, I., Toth, G., Liu, Y., Sun, X., & Gombosi, T. I. “Numerical Simulations of Coronal Mass Ejection on 2011 March 7: One-temperature and Two-temperature Model Comparison”, Astrophys. J., 773, 50
  59. Cheng, X., Zhang, J., Ding, M. D., Olmedo, O., Sun, X., Guo, Y., & Liu, Y. “Investigating Two Successive Flux Rope Eruptions in a Solar Active Region”, Astrophys. J. Lett., 769, 25
  60. Welsch, B. T., Fisher, G. H., & Sun, X. “A Magnetic Calibration of Photospheric Doppler Velocities”, Astrophys. J., 765, 98
  61. Feng, L., Wiegelmann, T., Su, Y., Inhester, B., Li, Y. P., Sun, X., & Gan, W. Q. “Magnetic Energy Partition between the Coronal Mass Ejection and Flare from AR 11283”, Astrophys. J., 765, 37
  62. Shen, C., Li, G., Kong, X., Hu, J., Sun, X., Ding, L., Chen, Y., Wang, Yuming, & Xia, L., “Compound Twin Coronal Mass Ejections in the 2012 May 17 GLE Event”, Astrophys. J., 763, 114
  63. Tadesse, T., Wiegelmann, T., Inhester, B., MacNeice, P., Pevtsov, A., & Sun, X. “Full-disk nonlinear force-free field extrapolation of SDO/HMI and SOLIS/VSM magnetograms”, Astron. Astrophys., 550, A14

    64.  

    2012

  64. Zhang, J., Yang, S., Liu, Y., & Sun, X. “Emerging Dimmings of Active Regions Observed by the Solar Dynamics Observatory”, Astrophys. J. Lett., 760, L29
  65. Wiegelmann, T., Thalmann, J. K., Inhester, B., Tadesse, T., Sun, X., & Hoeksema, J. T. “How Should One Optimize Nonlinear Force-Free Coronal Magnetic Field Extrapolations from SDO/HMI Vector Magnetograms?”, Sol. Phys., 281, 37
  66. Guo, Y., Ding, M. D., Liu, Y., Sun, X., DeRosa, M. L., & Wiegelmann, T. “Modeling Magnetic Field Structure of a Solar Active Region Corona Using Nonlinear Force-free Fields in Spherical Geometry”, Astrophys. J., 760, 47
  67. Sun, X.†, Hoeksema, J. T., Liu, Y., Chen, Q., & Hayashi, K. “A Non-radial Eruption in a Quadrupolar Magnetic Configuration with a Coronal Null”, Astrophys. J., 757, 149 [ADS]
  68. Thalmann, J. K., Pietarila, A., Sun, X., & Wiegelmann, T. “Nonlinear Force-free Field Modeling of a Solar Active Region Using SDO/HMI and SOLIS/VSM Data”, Astron. J., 144, 33
  69. Liu, Y., Hoeksema, J. T., Scherrer, P. H., Schou, J., Couvidat, S., Bush, R. I., Duvall, T. L., Hayashi, K., Sun, X., & Zhao, X. “Comparison of Line-of-Sight Magnetograms Taken by the SDO/HMI and SoHO/MDI”, Sol. Phys., 279, 295
  70. Sun, X.†, Hoeksema, J. T., Liu, Y., Wiegelmann, T., Hayashi, K., Chen, Q., & Thalmann, J. “Evolution of Magnetic Field and Energy in a Major Eruptive Active Region Based on SDO/HMI Observation”, Astrophys. J., 748, 77 [ADS]
     

    2011

  71. Sun, X.†, Liu, Y., Hoeksema, J. T., Hayashi, K., & Zhao, X. “A New Method for Polar Field Interpolation”, 2011, Sol. Phys., 270, 9 [ADS]
  72. Lee, C. O., Luhmann, J. G., Hoeksema, J. T., Sun, X., Arge, C. N., & de Pater, I. “Coronal Field Opens at Lower Height During the Solar Cycles 22 and 23 Minimum Periods: IMF Comparison Suggests the Source Surface Should Be Lowered”, Sol. Phys., 269, 367

    73.  

    2006

  73. Hu, Y., & Sun, X. “Earth’s Bow Shock and Its Interaction with Interplanetary Shocks”, Chin. J. Geophys., 49, 247

 

Proceedings, White Papers, Errata, and Technical Notes

  1. Nandy, D., et al. (including Sun, X.) “Exploring the Solar Poles”, Heliophysics 2024 Decadal Survey, White Paper
  2. Tarr, L. A., Rempel, M., et al. (including Sun, X.) (2022) “Enabling data-driven modeling and real-time prediction of the dynamic solar atmosphere”, Heliophysics 2024 Decadal Survey, White Paper
  3. Upton, L. A., et al. (including Sun, X.) (2022) “Revealing the Sun’s Polar Magnetic Fields: The Key to Unlocking the Solar Activity Cycle”, Heliophysics 2024 Decadal Survey, White Paper
  4. Linker, J., et al. (including Sun, X.) (2022) “The Open Flux Problem: The Need for High Latitude Observations”, Heliophysics 2024 Decadal Survey, White Paper
  5. Lynch, B. J., et al. (including Sun, X.) (2022) “Connecting Solar and Stellar Flares/CMEs: Expanding Heliophysics to Encompass Exoplanetary Space Weather”, Heliophysics 2024 Decadal Survey, White Paper
  6. Ito, M.*, Cunnyngham, I.*, Sadowski, P., & Sun, X. (2021) “Group Equivariant Neural Networks for Spectropolarimetric Inversions in Solar Astronomy”, ACML 2021, #397
  7. Pineci, A.*, Gaidos, E., Sun, X., & Sadowski, P. (2020) “EUV-Net: Predicting Solar Extreme Ultraviolet Emission from He I Line Absorption using Deep Learning”, AAAI PGAI 2020, #91
  8. Rempel, M., Fan, Y., Dikpati, M., Malanushenko, A., Kazachenko, M. D., Cheung, M. C. M., Chintzoglou, Sun, X., & Fisher, G. H. (2020) “Towards Data-Driven Modeling and Real-Time Prediction of Solar Flares and Coronal Mass Ejections”, Helios 2050, White Paper
  9. Dodds, C., Cunningham, I., Tarr, L., Jaeggli, S., Schad, T., Sadowski, P., & Sun, X. (2019) “Inverting Solar Spectropolarimetric Observations with Deep Learning”, NeurIPS 2019
  10. Sun, X.† (for the HMI team) (2018) “Polar Field Correction for HMI Line-of-Sight Synoptic Data”, arXiv: 1801.04265
  11. Sun, X.†, Bobra, M. G., Hoeksema, J. T., Liu, Y., Li, Y., Shen, C., Couvidat, S., Norton, A. A., & Fisher, G. H. (2017) “Erratum: “Why Is the Great Solar Active Region 12192 Flare-rich but CME-poor?” (2015, ApJL, 804, L28)”, Astrophys. J. Lett., 850, L43 [ADS]
  12. Sun, X.†, Hoeksema, J. T., Liu, Y., Wiegelmann, T., Hayashi, K., Chen, Q., & Thalmann, J. (2016) “Erratum: Evolution of Magnetic Field and Energy in A Major Eruptive Active Region Based on SDO/HMI Observation (2012, ApJ, 748, 77)”, Astrophys. J., 828, 65 [ADS]
  13. Wang, T., Ofman, L., Sun, X., Provornikova, E., & Davila, J. M. (2015) “Evidence of Thermal Conduction Suppression in Hot Coronal Loops: Supplementary Results”, Proc. IAUS, 320
  14. Sun, X.†, (for the CGEM team), (2014) “The CGEM Lorentz Force Data from HMI Vector Magnetograms”, arXiv: 1405.7353
  15. Rajaguru, S. P., Sun, X., Hayashi, K., & Couvidat, S. (2013) “Reflection and Refraction of (Magneto-)Acoustic Waves at the Magnetic Canopy: Further Evidences from Multi-Height Seismic Data”, APS Conf. Proc., 478, 345
  16. Sun, X.† (for the HMI team) (2013) “On the Coordinate System of Space-Weather HMI Active Region Patches (SHARPs): A Technical Note”, arXiv: 1309.2392
  17. Hayashi, K., Liu, Y., Sun, X., Hoeksema, J. T., Centeno, R., Barnes, G., & Leka, K. D. (2013) “Making Global Map of the Solar Surface Br from the HMI Vector Magnetic Field Observations”, J. Phys. Conf. Ser., 440, 012036

 

Ph.D. Dissertation

  • “The Magnetic Solar Photosphere and Corona: Observation, Modeling, and Prediction”, Stanford University, Department of Physics, 2012, Advisors: J. T. Hoeksema & P. H. Scherrer [Link]