Origin of Intense Magnetic Fields Near Black Holes Due to Non-Minimal Gravitational-Electromagnetic Coupling

Abstract

The origin of magnetic fields in astrophysical objects is a challenging problem in astrophysics. Throughout the years, many scientists have suggested that non-minimal gravitational-electromagnetic coupling (NMGEC) could be the origin of the ubiquitous astrophysical magnetic fields. We investigate the possible origin of intense magnetic fields $\sim 10^{15}-10^{16}$ by NMGEC near rotating neutron stars and black holes, connected with magnetars, quasars, and gamma-ray bursts. Whereas these intense magnetic fields are difficult to explain astrophysically, we find that they are easily explained by NMGEC.

7 pages, accepted for publication in Phys. Lett. B

References in corpus (4)

• The Physics of Gamma-Ray Bursts
• The distribution and cosmic evolution of massive black hole spins
• Evidence for Rapidly Spinning Black Holes in Quasars
• Suppression of small baryonic structures due to a primordial magnetic field

Cited by in corpus (3)

• Einstein Geometrization Philosophy and Differential Identities in PAP-Geometry
• Pure Geometric Field Theory: Description of Gravity and Material Distribution
• Challenges of Relativistic Astrophysics