Publications (22)
Multiple field-of-view MCAO for a Large Solar Telescope: LOST simulations
Marco Stangalini, Francesco Berrilli, Dario Del Moro +1
In the framework of a 4m class Solar Telescope we studied the performance of the MCAO using the LOST simulation package. In particular, in this work we focus on two different metho…
Observed local dispersion relations for magneto-acoustic-gravity waves in the Sun's atmosphere: Mapping the acoustic cut-off frequency
Stuart M. Jefferies, Bernhard Fleck, Neil Murphy +1
We present the observed local dispersion relations for magneto-acoustic-gravity waves in the Sun's atmosphere for different levels of magnetic field strength. We model these data w…
Reconstruction of the Total Solar Irradiance during the last Millenium
Valentina Penza, Luca Bertello, Matteo Cantoresi +5
Solar irradiance variations across various timescales, from minutes to centuries, represents a potential natural driver of past regional and global climate cold phases. To accurate…
Prediction of sunspot and plage coverage for Solar Cycle 25
Valentina Penza, Francesco Berrilli, Luca Bertello +2
Solar variability occurs over a broad range of spatial and temporal scales, from the Sun's brightening over its lifetime to the fluctuations commonly associated with magnetic activ…
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…
Correlation between active regions' spectra at high radio frequencies and solar flare occurrences
Sara Mulas, Alberto Pellizzoni, Marco Marongiu +31
High radio frequencies observations with the Italian network of large single-dish radio telescopes resulted in ~450 solar images between 2018 and 2023 in K-band frequency range (18…
The Great Aurora of 4 February 1872 observed by Angelo Secchi in Rome
Francesco Berrilli, Luca Giovannelli
Observation of auroras at low latitudes is an extremely rare event typically associated with major magnetic storms due to intense Earth-directed Coronal Mass Ejections. Since these…
3D photospheric velocity field of a Supergranular cell
Dario Del Moro, Silvia Giordano, Francesco Berrilli
We investigate the plasma flow properties inside a Supergranular (SG) cell, in particular its interaction with small scale magnetic field structures. The SG cell has been identifie…
Modeling Decadal and Centennial Solar UV Irradiance Changes
Raffaele Reda, Valentina Penza, Serena Criscuoli +5
Reconstructions of solar spectral irradiance - especially in the ultraviolet (UV) range - are crucial for understanding Earth's climate system. Although total solar irradiance (TSI…
3-D climate simulations for the detectability of Proxima Centauri b
Daniele Galuzzo, Chiara Cagnazzo, Francesco Berrilli +2
The discovery of a planet orbiting around Proxima Centauri, the closest star to the Sun, opens new avenues for the remote observations of the atmosphere and surface of an exoplanet…
N-body model of magnetic flux tubes reconnecting in the solar atmosphere
Luca Giovannelli, Francesco Berrilli, Dario Del Moro +7
The investigation of dynamics of the small scale magnetic field on the Sun photosphere is necessary to understand the physical processes occurring in the higher layers of solar atm…
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…
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…
The exoplanetary magnetosphere extension in Sun-like stars based on the solar wind -- solar UV relation
Raffaele Reda, Luca Giovannelli, Tommaso Alberti +6
The Earth's magnetosphere extension is controlled by the solar activity level via solar wind properties. Understanding such a relation in the Solar System is important for predicti…
JP3D compression of solar data-cubes: photospheric imaging and spectropolarimetry
Dario Del Moro, Luca Giovannelli, Ermanno Pietropaolo +1
Hyperspectral imaging is an ubiquitous technique in solar physics observations and the recent advances in solar instrumentation enabled us to acquire and record data at an unpreced…
Flare Forecasting Algorithms Based on High-Gradient Polarity Inversion Lines in Active Regions
Domenico Cicogna, Francesco Berrilli, Daniele Calchetti +6
Solar flares emanate from solar active regions hosting complex and strong bipolar magnetic fluxes. Estimating the probability of an active region to flare and defining reliable pre…
The correlation of synthetic UV color vs Mg II index along the solar cycle
Serena Criscuoli, Valentina Penza, Mija Lovric +1
Modeling of planets' climate and habitability requires as fundamental input the UV emission of the hosting star. \citet{lovric2017} employed SORCE/SOLSTICE solar observations to in…
Magnetic pattern at supergranulation scale: the Void Size Distribution
Francesco Berrilli, Stefano Scardigli, Dario Del Moro
The large-scale magnetic pattern of the quiet sun is dominated by the magnetic network. This network, created by photospheric magnetic fields swept into convective downflows, delin…
A New Method for Detecting Solar Atmospheric Gravity Waves
Daniele Calchetti, Stuart M. Jefferies, Bernhard Fleck +2
Internal gravity waves have been observed in the Earth's atmosphere and oceans, on Mars and Jupiter, and in the Sun's atmosphere. Despite ample evidence for the existence of propag…
A new catalogue of solar flare events from soft x-ray GOES signal in the period 1986-2020
Nicola Plutino, Francesco Berrilli, Dario Del Moro +1
Solar flares, along with other sun-originated events such as Coronal Mass Ejections, fast solar wind streams, and solar energetic particles are among the most relevant events in Sp…
A Probabilistic Approach to the Drag-Based Model
Gianluca Napoletano, Roberta Forte, Dario Del Moro +3
The forecast of the time of arrival of a coronal mass ejection (CME) to Earth is of critical importance for our high-technology society and for any future manned exploration of the…
Chromospheric Heating by Acoustic Waves Compared to Radiative Cooling: II -- Revised Grid of Models
Vahid Abbasvand, Michal Sobotka, Petr Heinzel +4
Acoustic and magnetoacoustic waves are considered to be possible agents of chromospheric heating. We present a comparison of deposited acoustic energy flux with total integrated ra…