Astronomers find that the sun’s core rotates four times faster than its surface. The most likely explanation is that this core rotation is left over from the period when the sun formed, some 4.6 billion years ago, before the the solar wind likely slowed the rotation of the outer part of the sun.

See the source article by following the link below:
Astronomers find that the sun’s core rotates four times faster than its surface. The most likely explanation is that this core rotation is left over from the period when the sun formed, some 4.6 billion years ago, before the the solar wind likely slowed the rotation of the outer part of the sun.