35 citations · 295 across the 24 of their papers we have counts for
6 papers · 1 filter
-mode strengthening from a localized bipolar subsurface magnetic field
Nishant K. Singh, Harsha Raichur, Maarit J. Käpylä +3
Recent numerical work in helioseismology has shown that a periodically varying subsurface magnetic field leads to a fanning of the -mode, which emerges from the density jump at…
E and B polarizations from inhomogeneous and solar surface turbulence
Axel Brandenburg, Andrea Bracco, Tina Kahniashvili +4
Gradient- and curl-type or E- and B-type polarizations have been routinely analyzed to study the physics contributing to the cosmic microwave background polarization and galactic f…
Non-linear Galactic Dynamos and the Magnetic Rädler Effect
Luke Chamandy, Nishant K. Singh
We show that the magnetic analogue of the Rädler effect of mean-field dynamo theory leads to a non-linear backreaction that quenches a large-scale galactic dynamo, and can result i…
Bihelical spectrum of solar magnetic helicity and its evolution
Nishant K. Singh, Maarit J. Käpylä, Axel Brandenburg +3
Using a recently developed two-scale formalism to determine the magnetic helicity spectrum (Brandenburg et al. 2017), we analyze synoptic vector magnetograms built with data from t…
Magnetic Helicity Reversal in the Corona at Small Plasma Beta
Philippe-A. Bourdin, Nishant K. Singh, Axel Brandenburg
Solar and stellar dynamos shed small-scale and large-scale magnetic helicity of opposite signs. However, solar wind observations and simulations have shown that some distance above…
Generation of large-scale magnetic fields due to fluctuating in shearing systems
Naveen Jingade, Nishant K. Singh, S. Sridhar
We explore the growth of large-scale magnetic fields in a shear flow, due to helicity fluctuations with a finite correlation time, through a study of the Kraichnan-Moffatt model of…