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Department of Applied Mathematics and Theoretical Physics

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  • 2017-date: PhD student in Astrophysics, DAMTP, University of Cambridge
  • 2014-2017: Masters in Theoretical Physics, American University of Beirut, Lebanon
  • 2011-2014: Bachelor's Degree in Theoretical Physics, Lebanese University, Lebanon

Research Interests

My interests lie in various aspects of astrophysical dynamics and celestial mechanics including, but not limited to, the dynamics of debris discs, Solar system dynamics, formation and evolution of exoplanets, and disc-planet interactions. Recent work has focused on developing models of the dynamical evolution of debris disks (exo-Kuiper belts) and their application to the interpretation of observed substructures.

You can download my CV here.


  • Sefilian, A. A., Rafikov, R. R., & Wyatt, M. C., 2020, "Formation of gaps in self-gravitating debris disks by secular resonance in a single-planet system I: A simplified model", submitted to ApJ (in press), arXiv:2010.15617
  • Sefilian, A. A., & Rafikov, R. R., 2019, "Potential softening and eccentricity dynamics in razor-thin, nearly Keplerian discs", MNRAS, 489, 4176 [pdf]
  • Sefilian, A. A., & Touma, J. R., 2019, "Shepherding in a Self-Gravitating Disk of Trans-Neptunian Objects", AJ, 157, 59 [pdf]


Research Groups

Astrophysical Fluid Dynamics
Astrophysical Fluid Dynamics and Nonlinear Dynamics




01223 760398