I am currently a Sherman Fairchild Fellow in Theoretical Astrophysics at California Institute of Technology. I received my Ph.D. in theoretical physics from University of California Santa Barbara in 2018, M.S. in physics from University of Massachusetts Dartmouth in 2013, and B.S. in applied physics from Anhui Jianzhu University in China in 2011.


I study the micro-physical and non-thermal processes including magnetohydrodynamics, turbulence, instabilities and cosmic rays in circumgalactic medium, intracluster medium and Type Ia supernovae.

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I have several years of experience of developing large-scale simulations. In addition, I'm a member of yt Project since 2014, and have used yt to analyze and visualize Terabytes of simulation data on supercomputers.

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About Me

I maintain deep interests in classical Chinese philosophy and literature, especially the philosophical school of Taoism. I'm also an ink-and-water painter, a classical music fan and a new age music composer.

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S. Ji, T. K. Chan, C. B. Hummels, P. F. Hopkins, J. Stern, D. Kereš, E. Quataert, C.-A. Faucher-Giguère and N. Murray, “Properties of the Circumgalactic Medium in Cosmic Ray-Dominated Galaxy Halos”, submitted to MNRAS. arXiv

P. F. Hopkins, T. K. Chan, S. Garrison-Kimmel, S. Ji, K. Y. Su, C. B. Hummels, D. Kereš, E. Quataert and C.-A. Faucher-Giguère, “But What About... Cosmic Rays, Magnetic Fields, Conduction, & Viscosity in Galaxy Formation”, submitted to MNRAS. arXiv

S. Xu, S. Ji and A. Lazarian, “On the Formation of Density Filaments in the Turbulent Interstellar Medium”, ApJ, 878, 157, 2019. arXiv DOI

S. Ji, S. P. Oh, and P. Masterson, “Simulations of Radiative Turbulent Mixing Layers”, MNRAS, 487, 737, 2019. arXiv DOI

S. Ji, S. P. Oh, and M. McCourt, “The Impact of Magnetic Fields on Thermal Instability,” MNRAS, 476, 852, 2018. arXiv DOI

E. O. Nadler, S. P. Oh, and S. Ji, “On the Apparent Power Law in CDM Halo Pseudo Phase Space Density Profiles,” MNRAS, 470, 500, 2017. arXiv DOI

R. Kashyap, R. Fisher, E. García-Berro, G. Aznar-Siguán, S. Ji, and P. Lorén-Aguilar, “One-Armed Spiral Instability in Double-Degenerate Post-Merger Accretion Disks,” ApJ, 840, 16, 2017. arXiv DOI

S. Ji, S. P. Oh, M. Ruszkowski, and M. Markevitch, “The Efficiency of Magnetic Field Amplification at Shocks by Turbulence,” MNRAS, 463, 3989, 2016. arXiv DOI

D. van Rossum, R. Kashyap, R. Fisher, R. T. Wollaeger, E. García-Berro, G. Aznar-Siguán, S. Ji, and P. Lorén-Aguilar, “Light Curves and Spectra from a Thermonuclear Explosion of a White Dwarf Merger,” ApJ, 827, 128, 2016. arXiv DOI

R. Kashyap, R. Fisher, E. García-Berro, G. Aznar-Siguán, S. Ji, and P. Lorén-Aguilar, “Spiral Instability Can Drive Thermonuclear Explosions in Binary White Dwarf Mergers,” ApJL, 800, L7, 2015. arXiv DOI

S. Ji, R. Fisher, E. García-Berro, P. Tzeferacos, G. Jordan, D. Lee, P. Lorén-Aguilar, P. Cremer, and J. Behrends, “The Post-Merger Magnetized Evolution of White Dwarf Binaries: The Double-Degenerate Channel of Sub-Chandrasekhar Type Ia Supernovae and the Formation of Magnetized White Dwarfs,” ApJ, 773, 136, 2013. arXiv DOI