Selected Publications (go here for complete-ish list)
by most recent
                1. ``Linear and nonlinear evolution of the vertical shear instability in accretion discs'', R. P. Nelson, O. Gressel and  O.M. UmurhanMon. Not. Royal A. S. (2012).
                2. ``Non-Dissipative Saturation of the Magnetorotational Instability", E. Liverts, Y. Shtemler, M. Mond, O.M. Umurhan and D. V. Bisikalo, Phys. Rev. Let. (2012).
                3. ``Potential vorticity dynamics in the framework of disk shallow-water theory: II. Mixed barotropic-baroclinic instability'', O.M. Umurhan Astron. and Astrophys., 543, 543-554 (2012).
                4. ``Vorticity inversion and action-at-a-distance instability in stably stratified shear flow'', A. Rabinovich O.M. Umurhan , E. Heifetz, N. Harnik and F. Lott,  J. of Fluid Mech., 670, 301-325 (2011).
                5. ``Potential vorticity dynamics in the framework of disk shallow-water theory: I. The Rossby wave instability'', O.M. Umurhan,   Astron. and Astrophys., 521, A25-33 (2010).
                6. ``Non-exponential hydrodynamical growth in density-stratified thin Keplerian discs'', Y. U. Shtemler, M. Mond, G. Rudiger, O. Regev and O.M. UmurhanMonthly Notices of the RAS, 406, 517-528 (2010).
                7. ``Low magnetic-Prandtl number flow configurations for cold astrophysical disk models: speculation and analysis", O.M. Umurhan, Astron. and Astrophys., 513, A47-54 (2010).
                8. ``Global transient dynamics of three-dimensional hydrodynamical disturbances in a thin viscous ac- cretion disk", P. Rebusco, O.M. Umurhan, W. Kluzniak and O. Regev, Phys. Fluids, 21, 076601-20 (2009).
                9. ``Linear dynamics of weakly viscous accretion disks: A disk analog of Tollmien-Schlichting waves", O.M. Umurhan and G. Shaviv, Astron. and Astrophys., 497, 1-15 (2009).
                10. ``I-V Relations in Nano Thin Semi-conductors with Mobile Acceptors or Donors," Y. Gil, O.M. Umurhan I Riess,  and Y. Tsur, Solid State Ionics179 (6), 24-32 (2008).
                11. ``A buoyancy-vorticity wave interaction approach to stratified shear flow,"  N. Harnik, E. Heifetz, O.M. Umurhan and F. Lott, J. Atm. Sci.65, 135106 (2008).
                12. ``On the viability of the shearing box approximation for numerical studies of MHD turbulence in accretion disks", O. Regev and O.M. Umurhan,   Astron. and Astrophys., 481, 21-32 (2008).
                13. ``A weakly nonlinear analysis of the magnetorotational instability in a model channel flow," O.M. Umurhan,  K. Menou  and O. Regev,  Phys. Rev. Lett., 98, 034501 (2007).
                14. ``Hydrodynamic stability of rotationally supported flows: Linear and nonlinear 2D shearing box results", O.M. Umurhan and O.Regev.  Astron. and Astrophys.427, 855-872 (2004).

Some Recent Conference Slides

JPL Talk
exooplanet stuff
The unsteady competition between Rossby
and Stratorotational instabilities in PP disks
and other new results regarding Goldreich-Schubert-Fricke Instability for disks

Exoplanet Magnetic Storms
"On the dynamics of magnetized compact vortices"

Baroclinic Instabilities and Disk Meteorology
(Baroclinic processes in protoplanetary disks