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Small-scale eruptions could play an important role in coronal heating,generation of solar energetic particles (SEPs), and mass source of the solarwind. However, they are poorly observed, and their characteristics,distributions, and origins remain unclear. Here a mini coronal dimming wascaptured by the recently launched Solar Orbiter spacecraft. The observationsindicate that a minifilament eruption results in the dimming and takes awayapproximately $(1.65\pm0.54)\times10^{13}$ g of mass, which also exhibitssimilar features as the sources of SEP events. The released magnetic freeenergy is of the order of $\sim10^{27}$ erg. Our results suggest that weakconstraining force makes the flux rope associated with the minifilament easilyenter a torus-unstable domain. We discuss that weak magnetic constraints fromlow-altitude background fields may be a general condition for the quiet-Suneruptions, which provide a possible mechanism for the transport of coronalmaterial and energy from the lower to the middle or even higher corona.

Observations of Mini Coronal Dimmings Caused by Small-scale Eruptions in the Quiet Sun