Publications (38)
Unexpected frequency of horizontal oscillations of magnetic structures in the solar photosphere
M. Berretti, M. Stangalini, G. Verth +6
It is well known that the dominant frequency of oscillations in the solar photosphere is 3 mHz, which is the result of global resonant modes pertaining to the whole stella…
Diffusion of magnetic elements in a supergranular cell
F. Giannattasio, M. Stangalini, F. Berrilli +2
Small scale magnetic fields (magnetic elements) are ubiquitous in the solar photosphere. Their interaction can provide energy to the upper atmospheric layers, and contribute to hea…
Three-minute wave enhancement in the solar photosphere
M. Stangalini, F. Giannattasio, D. Del Moro +1
It is a well-known result that the power of five-minute oscillations is progressively reduced by magnetic fields in the solar photosphere. Many authors have pointed out that this f…
Solar magnetism eXplorer (SolmeX)
H. Peter, L. Abbo, V. Andretta +36
The magnetic field plays a pivotal role in many fields of Astrophysics. This is especially true for the physics of the solar atmosphere. Measuring the magnetic field in the upper s…
The photospheric environment of a solar pore with light bridge
S. Giordano, F. Berrilli, D. Del Moro +1
Pores are one of the various features forming in the photosphere by the emergence of magnetic field onto the solar surface. They lie at the border between tiny magnetic elements an…
Multiscale magnetic underdense regions on the solar surface: Granular and Mesogranular scales
F. Berrilli, S. Scardigli, S. Giordano
The Sun is a non-equilibrium dissipative system subjected to an energy flow which originates in its core. Convective overshooting motions create temperature and velocity structures…
Optical design of the Tor vergata Synoptic Solar Telescope (TSST)
G. Viavattene, D. Calchetti, F. Berrilli +5
Synoptic full-disk solar telescope are fundamental instruments for present and future Solar Physics and Space Weather. They are typically used to study and monitor the solar activi…
High cadence spectropolarimetry of moving magnetic features observed around a pore
S. Criscuoli, D. Del Moro, F. Giannattasio +5
Moving magnetic features (MMFs) are small-size magnetic elements that are seen to stream out from sunspots, generally during their decay phase. Several observational results presen…
MHD wave transmission in the Sun's atmosphere
M. Stangalini, D. Del Moro, F. Berrilli +1
MHD wave propagation inside the Sun's atmosphere is closely related to the magnetic field topology. For example, magnetic fields are able to lower the cutoff frequency for acoustic…
Chromospheric heating by acoustic waves compared to radiative cooling
M. Sobotka, P. Heinzel, M. Å vanda +3
Acoustic and magnetoacoustic waves are among the possible candidate mechanisms that heat the upper layers of solar atmosphere. A weak chromospheric plage near a large solar pore NO…
Magnetic field distribution in the quiet Sun: a simplified model approach
F. Berrilli, D. Del Moro, B. Viticchie
We simulate the dynamics and the evolution of quiet Sun magnetic elements to produce a probability density function of the field strengths associated with such elements. The dynami…
Super-diffusion versus competitive advection: a simulation
D. Del Moro, F. Giannattasio, F. Berrilli +3
Magnetic element tracking is often used to study the transport and diffusion of the magnetic field on the solar photosphere. From the analysis of the displacement spectrum of these…
SoFT: Detecting and Tracking Magnetic Structures in the Solar Photosphere
M. Berretti, M. Stangalini, S. Mestici +3
In this work, we present SoFT: Solar Feature Tracking, a novel feature-tracking tool developed in Python and designed to detect, identify, and track magnetic elements in the solar…
The dependence of the [FUV-MUV] colour on solar cycle
M. Lovric, F. Tosone, E. Pietropaolo +4
Solar UV variability is extremely relevant for the stratospheric ozone. It has an impact on Earth's atmospheric structure and dynamics through radiative heating and ozone photochem…
Properties of G-band Bright Points derived from IBIS observations
S. Criscuoli, D. Del Moro, F. Giorgi +5
We have investigated properties of photospheric Bright Points (BPs) observed in an Active Region during its decay phase and in a quiet Sun region. We have analyzed two sets of phot…
Quiet Sun Magnetic Field Measurements Based on Lines with Hyperfine Structure
J. Sanchez Almeida, B. Viticchie, E. Landi Degl'Innocenti +1
The Zeeman pattern of MnI lines is sensitive to hyperfine structure (HFS) and, they respond to hG magnetic field strengths differently from the lines used in solar magnetometry. Th…
Occurrence and persistence of magnetic elements in the quiet Sun
F. Giannattasio, F. Berrilli, G. Consolini +3
Turbulent convection efficiently transports energy up to the solar photosphere, but its multi-scale nature and dynamic properties are still not fully understood. Several works in t…
Pair separation of magnetic elements in the quiet Sun
F. Giannattasio, F. Berrilli, L. Biferale +5
The dynamic properties of the quiet Sun photosphere can be investigated by analyzing the pair dispersion of small-scale magnetic fields (i.e., magnetic elements). By using hr-…
The Intensity Profile of the Solar Supergranulation
N. J. Goldbaum, M. P. Rast, I. Ermolli +2
We have measured the average radial (cell center to network boundary) profile of the continuum intensity contrast associated with supergranular flows using data from the Precision…
Umbral oscillations in the photosphere. A comprehensive statistical study
M. Berretti, M. Stangalini, G. Verth +4
It is well-known that the global acoustic oscillations of the Sun's atmosphere can excite resonance modes within large-scale magnetic concentrations. These structures are conduits…
On the asymmetry of velocity oscillation amplitude in bipolar active regions
F. Giannattasio, M. Stangalini, D. Del Moro +1
The velocity field in the lower solar atmosphere undergoes strong interactions with magnetic fields. Many authors have pointed out that power is reduced by a factor between two and…
MCAO for the European Solar Telescope: first results
M. Stangalini, R. Piazzesi, D. Del Moro +1
We analise the efficiency of wavefront reconstruction in the MultiConjugate Adaptive Optics system for the European Solar Telescope (EST). We present preliminary results derived fr…
On the use of field RR Lyrae as Galactic probes:. IX. Radial velocities
K. Baeza-Villagra, V. F. Braga, M. Fabrizio +25
We present the largest and most homogeneous catalog of radial velocity (RV) measurements for field RR Lyrae (RRL) variables, based on both proprietary and publicly available spectr…
Diffusion of solar magnetic elements up to supergranular spatial and temporal scales
F. Giannattasio, D. Del Moro, F. Berrilli +3
The study of spatial and temporal scales on which small magnetic structures (magnetic elements) are organized in the quiet Sun may be approached by determining how they are transpo…
Can instrumental effects obscure the true photospheric wave spectrum?
M. Berretti, M. Stangalini, D. B. Jess +6
Optical aberrations and instrument resolution can affect the observed morphological properties of features in the solar atmosphere. However, little work has been done to study the…
ASR: Archival Solar flaRes catalogue
M. Berretti, S. Mestici, L. Giovannelli +4
Solar flares result from the rapid conversion of stored magnetic energy within the Sun's corona. These energy releases are associated with coronal magnetic loops, which are rooted…
Imaging Spectropolarimetry with IBIS II: on the fine structure of G-band bright features
B. Viticchié, D. Del Moro, S. Criscuoli +1
We present new results from first observations of the quiet solar photosphere performed through the Interferometric BIdimensional Spectrometer (IBIS) in spectropolarimetric mode. I…
Imaging Spectropolarimetry with IBIS: Evolution of Bright Points in the Quiet Sun
B. Viticchié, D. Del Moro, F. Berrilli +2
We present the results from first spectropolarimetric observations of the solar photosphere acquired at the Dunn Solar Telescope with the Interferometric Bidimensional Spectrometer…
Total Solar Irradiance during the Last Five Centuries
V. Penza, F. Berrilli, L. Bertello +3
The total solar irradiance (TSI) varies on timescales of minute to centuries. On short timescales it varies due to the superposition of intensity fluctuations produced by turbulent…
A prototype of a large tunable Fabry-Perot interferometer for solar spectroscopy
V. Greco, A. Sordini, G. Cauzzi +7
Large Fabry-Perot Interferometers are used in a variety of astronomical instrumentation, including spectro-polarimeters for 4-meter class solar telescopes. In this work we comprehe…
Dynamics of the solar atmosphere above a pore with a light bridge
M. Sobotka, M. Å vanda, J. JurÄák +3
Context: Solar pores are small sunspots lacking a penumbra that have a prevailing vertical magnetic field component. They can include light bridges at places with locally reduced m…
Observational evidence for buffeting induced kink waves in solar magnetic elements
M. Stangalini, G. Consolini, F. Berrilli +2
The role of diffuse photospheric magnetic elements in the energy budget of the upper layers of the Sun's atmosphere has been the recent subject of many studies. This was made possi…
Sun CubE OnE: A Multi-wavelength Synoptic Solar Micro Satellite
L. Giovannelli, F. Berrilli, M. Casolino +25
The Sun cubE onE (SEE) is a 12U CubeSat mission proposed for a phase A/B study to the Italian Space Agency that will investigate Gamma and X-ray fluxes and ultraviolet (UV) solar e…
The dynamics of small-scale magnetic fields modulated by the solar cycle
M. Stangalini, G. Verth, V. Fedun +9
In addition to sunspots, which represent the most easily visualized manifestation of solar magnetism, cutting-edge observations of the solar atmosphere have uncovered a plethora of…
A novel approach to identify resonant MHD wave modes in solar pores and sunspot umbrae: analysis
M. Stangalini, D. B. Jess, G. Verth +12
The umbral regions of sunspots and pores in the solar photosphere are generally dominated by ~mHz oscillations, which are due to -modes penetrating the magnetic region. In th…
Interpretation of HINODE SOT/SP asymmetric Stokes profiles observed in quiet Sun network and internetwork
B. Viticchié, J., Sánchez Almeida +2
We present the first interpretation of the Stokes profile asymmetries measured in the FeI 630 nm lines by SOT/SP, in both quiet Sun internetwork (IN) and network regions. The inver…
The spectrum of kink-like oscillations of solar photospheric magnetic elements
M. Stangalini, F. Berrilli, G. Consolini
Recently, the availability of new high-spatial and -temporal resolution observations of the solar photosphere has allowed the study of the oscillations in small magnetic elements.…
Propagating Spectropolarimetric Disturbances in a Large Sunspot
M. Stangalini, S. Jafarzadeh, I. Ermolli +7
We present results derived from the analysis of spectropolarimetric measurements of active region AR12546, which represents one of the largest sunspots to have emerged onto the sol…