Electrically charged flares that arch up from the sun are known as coronal mass ejections (CMEs).

Here's why:

* Flares are sudden releases of energy from the Sun's atmosphere. They can be extremely powerful, releasing energy equivalent to billions of hydrogen bombs.

* CMEs are massive bursts of plasma and magnetic field that erupt from the Sun's corona. They often accompany flares but can also occur independently.

* Arching: While flares are often associated with arched structures, CMEs are actually large bubbles of plasma that expand outward from the Sun. The arched structures you might be thinking of are likely prominences, which are cooler, denser regions of plasma that can be ejected by CMEs.

So, while flares and prominences can be involved, the term you're looking for is coronal mass ejections (CMEs).