67 citations · 329 across the 18 of their papers we have counts for
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Coronal Heating Rate in the Slow Solar Wind
Daniele Telloni, Marco Romoli, Marco Velli +59
This Letter reports the first observational estimate of the heating rate in the slowly expanding solar corona. The analysis exploits the simultaneous remote and local observations…
IBIS-A: The IBIS data Archive. High resolution observations of the solar photosphere and chromosphere with contextual data
Ilaria Ermolli, Fabrizio Giorgi, Mariarita Murabito +10
The IBIS data Archive (IBIS-A) stores data acquired with the Interferometric BIdimensional Spectropolarimeter (IBIS), which was operated at the Dunn Solar Telescope of the US Natio…
On the evolution of a sub-C class flare: a showcase for the capabilities of the revamped Catania Solar Telescope
Paolo Romano, Salvo L. Guglielmino, Pierfrancesco Costa +9
Solar flares are occasionally responsible for severe Space Weather events, which can affect space-borne and ground-based infrastructures, endangering anthropic technological activi…
Exploring the Solar Wind from its Source on the Corona into the Inner Heliosphere during the First Solar Orbiter - Parker Solar Probe Quadrature
Daniele Telloni, Vincenzo Andretta, Ester Antonucci +68
This Letter addresses the first Solar Orbiter (SO) -- Parker Solar Probe (PSP) quadrature, occurring on January 18, 2021, to investigate the evolution of solar wind from the extend…
Comparative case study of two methods to assess the eruptive potential of selected active regions
Francesca Zuccarello, Ilaria Ermolli, Marianna B. Korsos +4
Solar eruptive events, like flares and coronal mass ejections, are characterized by the rapid release of energy that can give rise to emission of radiation across the entire electr…
Effects of the chromospheric Lyα line profile shape on the determination of the solar wind HI outflow velocity using the Doppler dimming technique
G. E. Capuano, S. Dolei, D. Spadaro +15
The determination of solar wind outflow velocity is fundamental in order to probe the mechanisms of wind acceleration in the corona. We aim to study, via the Doppler dimming techni…
Differences in periodic magnetic helicity injection behaviour between flaring and non-flaring Active Regions: Case Study
M. B. Korsos, P. Romano, H. Morgan +3
The evolution of magnetic helicity has a close relationship with solar eruptions and is of interest as a predictive diagnostic. In this case study, we analyse the evolution of the…
Properties of the Umbral Filament Observed in Active Region NOAA 12529
S. L. Guglielmino, P. Romano, B. Ruiz Cobo +2
Recent observations of the solar photosphere revealed the presence of elongated filamentary bright structures inside sunspot umbrae, called umbral filaments (UFs). These features d…
Solar flare forecasting using morphological properties of sunspot groups
M. Falco, P. Costa, P. Romano
We describe a new tool developed for solar flare forecasting on the base of some sunspot group properties. Assuming that the flare frequency follows the Poisson statistics, this to…
Historical solar Ca II K observations at the Rome and Catania observatories
Theodosios Chatzistergos, Ilaria Ermolli, Mariachiara Falco +5
Here we present the little explored Ca II K archives from the Rome and the Catania observatories and analyse the digitised images from these archives to derive plage areas.
Recent insights on the penumbra formation process
M. Murabito, P. Romano, F. Zuccarello +1
Using high-resolution spectropolarimetric data acquired by \textit{IBIS}, as well as \textit{SDO}/HMI observations, we studied the penumbra formation in AR NOAA 11490 and in a samp…
Satellite observations of reconnection between emerging and pre-existing small-scale magnetic fields
S. L. Guglielmino, F. Zuccarello, P. R. Young +2
We report multi-wavelength ultraviolet observations taken with the IRIS satellite, concerning the emergence phase in the upper chromosphere and transition region of an emerging flu…
Height dependence of the penumbral fine-scale structure in the inner solar atmosphere
Mariarita Murabito, I. Ermolli, F. Giorgi +6
We studied the physical parameters of the penumbra in a large and fully-developed sunspot, one of the largest over the last two solar cycles, by using full-Stokes measurements take…
Two strong white-light solar flares in AR NOAA 12673 as potential clues for stellar superflares
Paolo Romano, Abouazza Elmhamdi, Ayman Kordi
Recently, two strong homologous white light flares of X-GOES class occurred on the Sun on Sept. 06, 2017, providing a rare exceptional opportunity to study the mechanisms responsib…
IRIS observations of magnetic interactions in the solar atmosphere between pre-existing and emerging magnetic fields. I. Overall evolution
Salvo L. Guglielmino, Francesca Zuccarello, Peter R. Young +2
We report multi-wavelength ultraviolet observations taken with the IRIS satellite, concerning the emergence phase in the upper chromosphere and transition region of an emerging flu…
H and H emission in a C3.3 solar flare: comparison between observations and simulations
Vincenzo Capparelli, Francesca Zuccarello, Paolo Romano +7
The Hydrogen Balmer series is a basic radiative loss channel from the flaring solar chromosphere. We report here on the analysis of an extremely rare set of simultaneous observatio…
Observational Evidence of a Flux Rope within a Sunspot Umbra
Salvo L. Guglielmino, Paolo Romano, Francesca Zuccarello
We observed an elongated filamentary bright structure inside the umbra of the big sunspot in active region NOAA 12529, which differs from the light bridges usually observed in suns…
A Statistical Study of CME Properties and of the Correlation Between Flares and CMEs over Solar Cycles 23 and 24
A. Compagnino, P. Romano, F. Zuccarello
We investigated some properties of coronal mass ejections (CMEs), such as speed, acceleration, polar angle, angular width, and mass, using data acquired by the Large Angle Spectrom…
The role of filament activation in a solar eruption
Fatima Rubio da Costa, Francesca Zuccarello, Lyndsay Fletcher +2
Observations show that the mutual relationship between filament eruptions and solar flares cannot be described in terms of an unique scenario. In some cases, the eruption of a fila…
Detection of plasma fluctuations in white-light images of the outer solar corona: investigation of the spatial and temporal evolution
D. Telloni, R. Ventura, P. Romano +2
This work focus on the first results on the identification and characterization of periodic plasma density fluctuations in the outer corona, observed in STEREO-A COR1 white-light i…