165 citations · 485 across the 16 of their papers we have counts for
16 papers
Dynamo Simulations Confirm Predominantly Toroidal Fields in Near-Core Region of an Intermediate-Mass Star
R. P. Ratnasingam, T. M. Rogers
Recent asteroseismic analysis of the main-sequence F star KIC 9244992 has revealed evidence for a strong, predominantly toroidal magnetic field in its deep radiative interior. Moti…
Numerical Simulations Confirm Wave-Induced Shear Mixing in Stellar Interiors
A. Varghese, R. P. Ratnasingam, L. Ramírez-Galeano +2
Internal Gravity Waves (IGWs) are thought to cause mixing in stellar interiors, a process that has been widely studied both theoretically and numerically. Our aim is to determine t…
Angular Momentum Transport by Internal Gravity Waves Across Age
Tamara Marie Rogers, Rathish Previn Ratnasingam
We present two-dimensional numerical simulations of convection and waves in a 7 solar mass star across stellar ages ranging from zero age to terminal-age-main-sequence. We show tha…
Calibrating chemical mixing induced by internal gravity waves based on hydrodynamical simulations; The chemical evolution of OB-type stars
J. S. G. Mombarg, A. Varghese, R. P. Ratnasingam
Internal gravity waves (IGWs) have been shown to contribute to the transport of chemical elements in stars with a convective core and radiative envelope. Recent 2D hydrodynamical s…
On the Geometry of the Near-Core Magnetic Field in Massive Stars
Rathish P. Ratnasingam, Philipp V. F. Edelmann, Dominic M. Bowman +1
It is well-known that the cores of massive stars sustain a stellar dynamo with a complex magnetic field configuration. However, the same cannot be said for the field's strength and…
Effect of Rotation on Wave Mixing in Intermediate Mass Stars
A. Varghese, R. P. Ratnasingam, R. Vanon +3
Internal gravity waves (IGWs) are likely to cause mixing in stellar interiors. Studies show that the mixing by these waves changes drastically across age and mass (Varghese et al.…