||IBIS 2D Spectropolarimetry: Analysis of G-band Bright Points
||437, Solar Polarization Workshop 6
||Viticchiè, B.; Del Moro, D.; Berrilli, F.; Rubio, L. B.; Tritschler, A.
We present the results derived from the analysis of
the first spectropolarimetric (SP) data obtained
through the Interferometric
BIdimensional Spectrometer (IBIS)
at the Dunn Solar Telescope (NSO).
The analysis is focused on 103 G
small scale (∼100 km) magnetic field concentrations observed,
in a quiet Sun region, as
bright points in G-band filtergrams.
The combination of high spatial and temporal resolution of both
SP and G-band datasets allowed us to analyze in detail the magnetic
properties of bright
points over different spatial scales (from ∼eq. 0.4″ up to 2″– 3″) and
temporal scales (from 10 min up to > 60 min) and, beside this, to
focus on the dependence
of significant physical quantities (i.e., magnetic
field strength and filling factor derived from Stokes profile inversion)
in relation with such evolutions.
We present two main results of our analysis:
i) evolution of bright points over small spatial
scales and short time intervals (by considering the
coalescence of small and faint bright points into a single
high brightness one);
ii) magnetic properties of bright points over large
spatial scales (by examining a small network patch).
Our study indicates an interesting correlation between
G-band brightness and magnetic filling factor fluctuations.
On the contrary, we have not observed any correlation
between G-band brightness and magnetic field strength.
Such a result can help us to conclude on the possible
fine structuring of kG concentrations in the solar
photosphere which produce brightness enhancement in