Origin of Magnetic Fields and the First Objects

Abstract

Magnetic fields are important in star formation at low redshifts. Thus, we may assume that primordial magnetic fields were important in the formation of the first objects. We discuss our work on the origin of primordial magnetic fields due to nonminimal gravitational-electromagnetic coupling, primordial density fluctuations, and primordial supernovae explosions. Our work on the amplification of the primordial magnetic fields by helical turbulence, the magnetization of the intergalactic medium, and the effects of the magnetized intergalactic medium on the formation of the first objects is also discussed.