902 citations · 9.2k across the 169 of their papers we have counts for
11 papers · 1 filter
Penumbral decay observed in active region NOAA 12585
M. Murabito, S. L. Guglielmino, I. Ermolli +3
The physical conditions leading the sunspot penumbra decay are poorly understood so far. We investigate the photospheric magnetic and velocity properties of a sunspot penumbra duri…
Restoring process of sunspot penumbra
P. Romano, M. Murabito, S. L. Guglielmino +2
We describe the disappearance of a sector of sunspot penumbra and its restoring process observed in the preceding sunspot of active region NOAA 12348. The evolution of the magnetic…
Spectro-Polarimetric Analysis of an Umbral Filament
S. L. Guglielmino, P. Romano, B. Ruiz Cobo +2
High-resolution observations of the solar photosphere have recently revealed the presence of elongated filamentary bright structures inside sunspot umbrae. These features, which ha…
Homologous white light solar flares driven by photosperic shear motions
P. Romano, A. Elmhamdi, M. Falco +4
We describe the peculiarity of two recurrent white light flares occurred on Sept. 06, 2017, in the super Active Region (SAR) NOAA 12673, with a time interval, between their peaks,…
The Signature of Flare Activity in Multifractal Measurements of Active Regions Observed by SDO/HMI
F. Giorgi, I. Ermolli, P. Romano +3
Recent studies indicate that measurements of fractal and multifractal parameters of active regions (ARs) are not efficient tools to discriminate ARs on the basis of the flare activ…
Observation of a 3D magnetic null point
P. Romano, M. Falco, S. L. Guglielmino +1
We describe high resolution observations of a GOES B-class flare characterized by a circular ribbon at chromospheric level, corresponding to the network at photospheric level. We i…
Plasma flows and magnetic field interplay during the formation of a pore
I. Ermolli, A. Cristaldi, F. Giorgi +5
We studied the formation of a pore in AR NOAA 11462. We analysed data obtained with the IBIS at the DST on April 17, 2012, consisting of full Stokes measurements of the Fe I 617.3…
On the formation of a stable penumbra in a region of flux emergence in the Sun
M. Murabito, P. Romano, S. L. Guglielmino +1
We studied the formation of the first penumbral sector around a pore in the following polarity of the Active Region (AR) NOAA 11490. We used a high spatial, spectral, and temporal…
Kinematics and Magnetic Properties of a Light Bridge in a Decaying Sunspot
M. Falco, J. M. Borrero, S. L. Guglielmino +7
We present the results obtained by analyzing high spatial and spectral resolution data of the solar photosphere acquired by the CRisp Imaging SpectroPolarimeter at the Swedish Sola…
Formation of the penumbra and start of the Evershed flow
M. Murabito, P. Romano, S. L. Guglielmino +2
We studied the variations of line-of-sight photospheric plasma flows during the formation phase of the penumbra around a pore in Active Region NOAA 11490. We used a high spatial, s…
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…