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Catherine Fischer, Ms. - PhD. |
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Kiepenheuer-Institut für Sonnenphysik, Freiburg, Germany |
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Session 1 - Poster |
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Quiet sun magnetic field evolution observed with Hinode SOT and IRIS |
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C. Fischer (1), N. Bello González (1) and R. Rezaei (1), 1 - Kiepenheuer-Institut für Sonnenphysik, Freiburg, Germany |
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We have calibrated and aligned a co-spatial and co-temporal 3
hour quiet sun time series taken with the Hinode and IRIS satellites.
Hinode SOT observed full Stokes profiles of the Fe I 630 line pairs with
the Spectro-polarimeter (SP) scanning a 8.7 arcsec region with a cadence
of about 70 seconds. The Broadband Filter Imager (BFI) observed in Ca II H
with a cadence of 31 s which was complemented by magnetograms and
dopplergrams constructed from Na D I 589,6 nm measurements observed by the
Narrowband Filter Imager (NFI). The IRIS satellite recorded slit jaw
images centered at 2832 Å (112 s cadence), 1390 Å (23 s) and with a
cadence of 19 s at 2796 Å. The spectrograph recorded spectra in several
passbands including the Mg II k and h lines performing a 2 step raster
with a 9.5 s step cadence.
We study magnetic elements seen in SP and NFI data undergoing a magnetic
field intensification process accompanied by the development of bright
points in the Ca II H images which we identify as convective collapse
events. In addition we study pairs of magnetic elements involved in flux
cancellation. The magnetic elements pass the IRIS slit at different stages
of these processes. The IRIS Magnesium lines spectra are analyzed to
investigate the response of the chromosphere to the magnetic events in the
photosphere below. We present the temporal evolution of the atmospheric
parameters from the photosphere to the transition region during these
occurrences and compare the results to convective collapse and flux
cancellation models. |
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