Small-scale flux emergence events observed by Sunrise/IMaX

Astronomy and Astrophysics – Astrophysics

Scientific paper

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Sun: Photosphere, Sun: Magnetic Fields, Sun: Activity, Techniques: High Angular Resolution

Scientific paper

Thanks to the unprecedented combination of high spatial resolution (0''.2) and high temporal cadence (33 s) spectropolarimetric measurements, the IMaX magnetograph aboard the Sunrise balloon-borne telescope is revealing new insights about the plasma dynamics of the all-pervasive small-scale flux concentrations in the quiet Sun. We present the result of a case study concerning the appearance of a bipole, with a size of about 4'' and a flux content of 5 × 1017 Mx, with strong signal of horizontal fields during the emergence. We analyze the data set using the SIR inversion code and obtain indications about the three-dimensional shape of the bipole and its evolution with time.

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