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Fig. 1.

image

Overview of the emerging active region. Panel a: global line-of-sight magnetic field observed by SDO/HMI. The yellow dashed line marks the solar equator. The yellow and black boxes outline the fields of view of panel (b) and panels (c)–(e), respectively; panel b: TiO image observed by NVST; panel c: continuum intensity image from SHARP data; panel d: vector magnetograms from SHARP data; blue and red arrows indicate the transverse field with positive and negative flux, respectively; panel e: doppler velocity from SHARP data.

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