Fig. 2.
Panel a: interferometric image of the solar active region 12 470 obtained on 16 December 2015 at 100 GHz (3.0 mm) in ALMA Band 3. The calibrated ALMA image has a field of view of 300″ × 300″. The beam size of ALMA is 4.9″ × 2.2″. Panels b–h: images at other wavelengths taken close to the ALMA reference time (18:32 UT). Squares lie at the same positions in all images, denoting selected small-scale ALMA bright features. (a) ALMA 3.0 mm, 18:32:41 UT. (b) SDO/HMI LOS magnetogram, 18:33:45 UT. (c) FDP Hα core, 6563 Å, 18:28−18:54 UT. (d) FDP Hα wing, 6563 Å, 18:28−18:54 UT. (e) SDO/AIA 1700 Å, 18:32:54 UT. (f) SDO/AIA 304 Å, 18:32:42 UT. (g) SDO/AIA 171 Å, 18:32:34 UT. (h) SDO/AIA 193 Å, 18:32:42 UT.
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