Rotor, electric motor, compressor, and refrigeration air conditioner

A rotor comprising:

• an iron core that assumes a cylindrical or columnar shape;
• and
• a plurality of magnets embedded in the iron core and equiangularly arranged with respect to an axis of the iron core,
• the iron core comprising
• a first end surface portion including a first end surface of the iron core,
• a second end surface portion including a second end surface of the iron core opposed to the first end surface, and
• a central portion disposed between the first end surface portion and the second end surface portion,
• the plurality of magnets each penetrating through the first and second end surface portions and the central portion,
• the iron core having a plurality of first gaps penetrating from the first end surface portion to the second end surface portion, and a plurality of second gaps formed from the first end surface portion without reaching the central portion, and
• the first gap and the second gap being alternately arranged.