Models for the long-term variations of solar activity

BB Karak - Living Reviews in Solar Physics, 2023 - Springer
One obvious feature of the solar cycle is its variation from one cycle to another. In this article,
we review the dynamo models for the long-term variations of the solar cycle. By long-term …

Progress in solar cycle predictions: Sunspot cycles 24–25 in perspective: Invited review

D Nandy - Solar Physics, 2021 - Springer
The dynamic activity of the Sun—sustained by a magnetohydrodynamic dynamo mechanism
working in its interior—modulates the electromagnetic, particulate, and radiative …

Physical models for solar cycle predictions

P Bhowmik, J Jiang, L Upton, A Lemerle… - Space Science …, 2023 - Springer
The dynamic activity of stars such as the Sun influences (exo) planetary space environments
through modulation of stellar radiation, plasma wind, particle and magnetic fluxes. Energetic …

Mean field models of flux transport dynamo and meridional circulation in the Sun and stars

G Hazra, D Nandy, L Kitchatinov, AR Choudhuri - Space Science Reviews, 2023 - Springer
The most widely accepted model of the solar cycle is the flux transport dynamo model. This
model evolved out of the traditional α Ω dynamo model which was first developed at a time …

Dynamo models of the solar cycle

P Charbonneau - Living Reviews in Solar Physics, 2020 - Springer
This paper reviews recent advances and current debates in modeling the solar cycle as a
hydromagnetic dynamo process. Emphasis is placed on (relatively) simple dynamo models …

Evolution of solar and stellar dynamo theory

P Charbonneau, D Sokoloff - Space Science Reviews, 2023 - Springer
In this paper, written as a general historical and technical introduction to the various
contributions of the collection “Solar and Stellar Dynamo: A New Era”, we review the …

Dynamo modelling for cycle variability and occurrence of grand minima in Sun-like stars: rotation rate dependence

V Vashishth, BB Karak… - Monthly Notices of the …, 2023 - academic.oup.com
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-like grand …

Discovery of a relation between the decay rate of the Sun's magnetic dipole and the growth rate of the following sunspot cycle: a new precursor for solar cycle …

P Jaswal, C Saha, D Nandy - Monthly Notices of the Royal …, 2024 - academic.oup.com
Sunspots have been observed for over four centuries and the magnetic nature of sunspot
cycles has been known for about a century; however, some of its underlying physics still …

Solar evolution and extrema: current state of understanding of long-term solar variability and its planetary impacts

D Nandy, PCH Martens, V Obridko, S Dash… - Progress in Earth and …, 2021 - Springer
The activity of stars such as the Sun varies over timescales ranging from the very short to the
very long—stellar and planetary evolutionary timescales. Experience from our solar system …

Causality in heliophysics: magnetic fields as a bridge between the Sun's interior and the Earth's space environment

D Nandy, Y Baruah, P Bhowmik, S Dash… - Journal of Atmospheric …, 2023 - Elsevier
Our host star, the Sun, is a middle-aged main sequence G type star whose activity varies.
These variations are primarily governed by solar magnetic fields which are produced in the …