What mechanisms do astronomers believe is responsible for making the Sun's outer atmosphere so much hotter than its photosphere?

Question

Quizplus · Accepted Answer

Astronomers believe that the Sun's magnetic field is responsible for heating its outer atmosphere or corona. The charged particles in the corona are subject to the magnetic field, which can cause them to accelerate and release energy in the form of heat. This process is known as magnetic reconnection and is believed to be responsible for the high temperatures observed in the corona compared to the Sun's surface or photosphere.

What Mechanisms Do Astronomers Believe Is Responsible for Making the Sun's