4 papers
Stochastic Resonance in a Thermally Driven Low-Dimensional Geodynamo Model
Giuseppina Nigro, Edoardo Cascio, Giuseppe Consolini +1
Geomagnetic field reversal sequences exhibit persistence times spanning a broad range, from a few years to superchrons lasting more than years. Despite extensive obse…
Convective Heat Transport Asymptotic Law in an dynamo model
Giuseppina Nigro
Stellar activity and planetary magnetospheres are powered by an underlying dynamo mechanism generated by magnetoconvection coupled with rotation. In astrophysical contexts, magneto…
On the Temporal Variability in the Magnetic Dichotomy of Late M Dwarf Stars
Giuseppina Nigro, Francesco Berrilli, Giuseppe Bono +4
Rapidly rotating late M dwarfs are observed in two different branches of magnetic activity, although they operate in the same stellar parameter range. Current empirical evidence in…
Investigating the Temperature Sensitivity of UV Line Ratios in the 280 nm Region of Solar-like Stars
Valentina Penza, Serena Criscuoli, Raffaele Reda +7
Stellar UV spectra are fundamental diagnostics of physical and magnetic properties of stars. For instance, lines like Mg II at 280 nm serve as valuable indicators of stellar activi…