Bibcode
Quintero Noda, C.; Shimizu, T.; Ruiz Cobo, B.; Suematsu, Y.; Katsukawa, Y.; Ichimoto, K.
Bibliographical reference
Monthly Notices of the Royal Astronomical Society, Volume 460, Issue 2, p.1476-1485
Advertised on:
8
2016
Citations
12
Refereed citations
11
Description
Solar pores are active regions with large magnetic field strengths and
apparent simple magnetic configurations. Their properties resemble the
ones found for the sunspot umbra although pores do not show penumbra.
Therefore, solar pores present themselves as an intriguing phenomenon
that is not completely understood. We examine in this work a solar pore
observed with Hinode/SP using two state of the art techniques. The first
one is the spatial deconvolution of the spectropolarimetric data that
allows removing the stray light contamination induced by the spatial
point spread function of the telescope. The second one is the inversion
of the Stokes profiles assuming local thermodynamic equilibrium that let
us to infer the atmospheric physical parameters. After applying these
techniques, we found that the spatial deconvolution method does not
introduce artefacts, even at the edges of the magnetic structure, where
large horizontal gradients are detected on the atmospheric parameters.
Moreover, we also describe the physical properties of the magnetic
structure at different heights finding that, in the inner part of the
solar pore, the temperature is lower than outside, the magnetic field
strength is larger than 2 kG and unipolar, and the line-of-sight
velocity is almost null. At neighbouring pixels, we found low magnetic
field strengths of same polarity and strong downward motions that only
occur at the low photosphere, below the continuum optical depth log
τ = -1. Finally, we studied the spatial relation between different
atmospheric parameters at different heights corroborating the physical
properties described before.