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 …

Prediction of the strength and timing of sunspot cycle 25 reveal decadal-scale space environmental conditions

P Bhowmik, D Nandy - Nature communications, 2018 - nature.com
The Sun's activity cycle governs the radiation, particle and magnetic flux in the heliosphere
creating hazardous space weather. Decadal-scale variations define space climate and force …

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 …

Observationally guided models for the solar dynamo and the role of the surface field

RH Cameron, M Schüssler - Space Science Reviews, 2023 - Springer
Theoretical models for the solar dynamo range from simple low-dimensional “toy models” to
complex 3D-MHD simulations. Here we mainly discuss appproaches that are motivated and …

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 …

Solar cycle prediction

K Petrovay - Living Reviews in Solar Physics, 2020 - Springer
A review of solar cycle prediction methods and their performance is given, including early
forecasts for Cycle 25. The review focuses on those aspects of the solar cycle prediction …

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 …

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 …