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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…
Stellar cycle variability in Mount Wilson stars and dynamo models: Rotation rate and dynamo number dependency
Suyog Garg, Bidya Binay Karak, Rohan B. Mandrai
Similar to the solar cycle, the magnetic cycles of other solar-type stars are also variable. How the variability of the stellar cycle changes with the rotation rate or the dynamo n…
Observed Joys law of Bipolar Magnetic Region tilts at the emergence supports the thin flux tube model
Anu Sreedevi, Bidya Binay Karak, Bibhuti Kumar Jha +2
Bipolar sunspots, or more generally, Bipolar Magnetic Regions, BMRs, are the dynamic magnetic regions that appear on the solar surface and are central to solar activity. One striki…
Quasi-Biennial Oscillations and Rieger-type Periodicities in a Babcock-Leighton Solar Dynamo
Pawan Kumar, Belur Ravindra, Partha Chowdhury +1
The Sun's magnetic field shows the 11-year solar cycle and shorter periodicities, popularly known as the quasi-biennial oscillations (QBOs) and Rieger-type periods, or ``season of…
Backtracking Bipolar Magnetic Regions to their emergence: Two groups and their implication in the tilt measurements
Anu Sreedevi, Bidya Binay Karak, Bibhuti Kumar Jha +2
Bipolar Magnetic Regions (BMRs) that appear on the solar photosphere are surface manifestations of the Suns internal magnetic field. With modern observations and continuous data st…
Role of sunspot latitude versus tilt in determining the polar field and amplitude of the next cycle: Cause of the weak Solar Cycle 20
Bidisha Dey, Anu Sreedevi, Bidya Binay Karak
One prominent feature of solar cycle is its irregular variation in its cycle strength, making it challenging to predict the amplitude of the next cycle. Studies show that fluctuati…