Research Interests

• Various waves and instabilities in inviscid flows and their role in understanding the angular momentum transport in accretion disks
• Linear theory and nonlinear hydrodynamic simulations of Rossby vortices in accretion disks

• Lovelace, R. V. E.; Li, H.; Colgate, S. A.; Nelson, A. F. (1999) "Rossby Wave Instability of Keplerian Accretion Disks", ApJ, 513, 805. [ download pdf ]
• Li, H.; Finn, J. M.; Lovelace, R. V. E.; Colgate, S. A. (2000) "Rossby Wave Instability of Thin Accretion Disks. II. Detailed Linear Theory" , ApJ, 533, 1023. [ download pdf ]
• H. Li, S. A. Colgate, B. Wendroff, and R. Liska (2001) "Rossby Wave Instability of Thin Accretion Disks III. Nonlinear Simulations" ApJ, 551, 847 [ download pdf ] 

I've also prepared two movies about the formation and merging of Rossby vortices in accretions disks.