20 citations · 62 across the 8 of their papers we have counts for
9 papers
Does the Babcock-Leighton dynamo operate in rapidly rotating solar-type stars? Exploration using a 3D dynamo model at different rotation rates
Vindya Vashishth, Bidya Binay Karak
The Babcock-Leighton dynamo, which relies on the generation of a poloidal field through the decay and dispersal of tilted bipolar magnetic regions (BMRs), is a promising paradigm f…
The role of meridional flow in the generation of solar/stellar magnetic fields and cycles
Vindya Vashishth, Bidya Binay Karak
Meridional flow is crucial in generating the solar poloidal magnetic field by facilitating the poleward transport of the field from the decayed Bipolar Magnetic Regions (BMRs). As…
Hysteresis near the transition of the large-scale dynamo in the presence of the small-scale dynamo
Vindya Vashishth
In Sun and solar-type stars, there is a critical dynamo number for the operation of a large-scale dynamo, below which the dynamo ceases to operate. This region is known as the subc…
Modelling the rotation dependence of cycle variability in sun-like stars: Answering why only slowly rotating stars produce grand minima
Vindya Vashishth
The Sun and solar-type stars exhibit irregular cyclic variations in their magnetic activity over long time scales. To understand this irregularity, we employed the flux transport d…
Dynamo modelling for cycle variability and occurrence of grand minima in Sun-like stars: Rotation rate dependence
Vindya Vashishth, Bidya Binay Karak, Leonid Kitchatinov
Like the solar cycle, stellar activity cycles are also irregular. Observations reveal that rapidly rotating (young) Sun-like stars exhibit a high level of activity with no Maunder-…
Modelling the occurrence of grand minima in sun-like stars using a dynamo model
Vindya Vashishth
In this work, we have studied the variability and frequency of occurrence of the grand minima using kinematic dynamo models of one solar mass star with different rotation rates and…
Subcritical dynamo and hysteresis in a Babcock-Leighton type kinematic dynamo model
Vindya Vashishth, Bidya Binay Karak, Leonid Kitchatinov
In Sun and sun-like stars, it is believed that the cycles of the large-scale magnetic field are produced due to the existence of differential rotation and helicity in the plasma fl…
Supercriticality of the dynamo limits the memory of the polar field to one cycle
Pawan Kumar, Bidya Binay Karak, Vindya Vashishth
The polar magnetic field precursor is considered to be the most robust and physics-based method for the prediction of the next solar cycle strength. However, to make a reliable pre…
Stellar Dynamos with Solar and Anti-solar Differential Rotations: Implications to Magnetic Cycles of Slowly Rotating Stars
Bidya Binay Karak, Aparna Tomar, Vindya Vashishth
Simulations of magnetohydrodynamics convection in slowly rotating stars predict anti-solar differential rotation (DR) in which the equator rotates slower than poles. This anti-sola…