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SIYAO XU

Hubble Fellow

University of Wisconsin, Madison
sxu93@wisc.edu

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MY RESEARCH

demonstrates the key role of MHD turbulence in connecting diverse astrophysical processes and unraveling long-standing astrophysical problems.

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TURBULENT DYNAMO

Xu & Lazarian 2016;

Xu & Lazarian 2017a;

Xu & Lazarian 2017b (Supernova Remnants);

Xu et al. 2019 (two-fluid numerical test)

The small-scale turbulent dynamo is an important process contributing to the cosmic magnetization. I addressed the long-standing challenge of formulating the nonlinear turbulent dynamo and obtained the first analytical solution to its evolution law. Furthermore, I identified new dynamo regimes and enlarged the scope of applicability in various astrophysical settings.

Publications

  1. Xu S. & Lazarian A. Turbulence in a self-gravitating molecular cloud core, 
2020, ApJ, in print arXiv:2001.07721 

  2. Xu S. Projected velocity statistics of interstellar turbulence, 2020, MNRAS, 492, 1044   arXiv:1911.00521

  3. Krumholz M., Crocker R., Xu S., et al. Cosmic ray transport in starburst galaxies, 2020, MNRAS, in print  arXiv: 1911.09774

  4. Li Y., Gendron-Marsolais M., Zhuravleva I., Xu S., et al. Direct detection of black hole-driven turbulence in the centers of galaxy clusters, 2020, ApJL, 889, 1   arXiv: 1911.06329

  5. Lazarian A., Eyink G., Jafari A., Kowal G., Li H., Xu S. & Vishniac E. 3D Turbulent Reconnection: Theory, Tests & Astrophysical Implications (review), 2020, Physics of Plasmas, 27, 012305   arXiv: 2001.00868

  6. Xu S., Ji S. & Lazarian A. On the formation of density filaments in the turbulent interstellar medium, 2019, ApJ, 878, 157   arXiv:1905.06341

  7. Xu S., Klingler N., Kargaltsev, O. & Zhang B. On the broad-band synchrotron spectra of pulsar wind nebulae, 2019, ApJ, 872, 10    arXiv:1812.10827

  8. Xu S., Garain, S., Balsara, D. & Lazarian A. Turbulent dynamo in a weakly ionized medium, 2019, ApJ, 872, 62    arXiv:1901.02893

  9. Lazarian A., Zhang B. & Xu S. Gamma-ray bursts induced by turbulent reconnection, 2019, ApJ, 882, 184  arXiv: 1801.04061   

  10. Xu S. & Lazarian A. Resonance-broadened Transit Time Damping of Particles in MHD Turbulence, 2018, ApJ, 868, 36   arXiv:1810.07726

  11. Xu S., Yang Y. & Zhang B. On the synchrotron spectrum of GRB prompt emission, 2018, ApJ, 853, 43  arXiv:1711.03943

  12. Xu S. & Zhang B. Adiabatic non-resonant acceleration in magnetic turbulence and hard spectrum of gamma-ray bursts, 2017, ApJL, 846, 28  arXiv:1708.08029

  13. Xu S. & Zhang B. Scatter broadening of pulsars and implications on the interstellar medium turbulence, 2017, ApJ, 835, 2  arXiv:1610.03011

  14. Xu S. & Lazarian A. Magnetic field amplification in supernova remnants, 2017, ApJ, 850, 126   arXiv:1710.07717

  15. Xu S. & Lazarian A. Magnetohydrodynamic turbulence and turbulent dynamo in partially ionized plasma, 2017, New Journal of Physics, 19, 5005  arXiv:1810.08205

  16. López-Barquero, V., Xu, S., Desiati, P., Lazarian, A., Pogorelov, N.V. & Yan, H. TeV Cosmic-ray anisotropy from the magnetic field at the heliospheric boundary, 2017, ApJ, 842, 54  arXiv:1610.03097

  17. Xu S. & Lazarian A. Turbulent dynamo in a conducting fluid and a partially ionized gas, 2016, ApJ, 833, 215  arXiv: 1608.05161

  18. Xu S. & Zhang B. On the origin of the scatter broadening of fast radio burst pulses and astrophysical implications, 2016, ApJ, 832, 199  arXiv:1608.03930

  19. Xu S. & Zhang B. Interpretation of the structure function of rotation measure in the interstellar medium, 2016, ApJ, 824, 113  arXiv:1604.05445

  20. Xu S., Yan H. & Lazarian A. Damping of magnetohydrodynamic turbulence in partially ionized plasma: implications for cosmic ray propagation, 2016, ApJ, 826, 166  arXiv:1506.05585

  21. López-Barquero, V., Farber, R., Xu, S., Desiati, P. & Lazarian, A. Cosmic ray small-scale anisotropies and local turbulent magnetic fields, 2016, ApJ, 830, 19  arXiv:1509.00892

  22. Xu S., Lazarian A. & Yan H. The line width difference of neutrals and ions induced by MHD turbulence, 2015, ApJ, 810, 44  arXiv:1412.8608

  23. Xu S. & Li Z. Prompt optical emission from gamma-ray bursts with multiple timescale variability of central engine activities, 2014, Research in Astronomy and Astrophysics, 14, 411  arXiv:1311.2183

  24. Xu S. & Yan H. Cosmic-ray parallel and perpendicular transport in turbulent magnetic fields, 2013, ApJ, 779, 140  arXiv:1307.1346 

  25. Xu S., Zhang H. & Liu X. Extremely metal-poor star candidates in the SDSS, 2013, Research in Astronomy and Astrophysics, 13, 313  arXiv:1211.1196

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MY CV

475 N Charter St, Madison, WI 53706, USA

sxu93@wisc.edu

6082628687

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