Chiral anomalous processes in magnetospheres of pulsars and black holes

Abstract

We propose that chirally asymmetric plasma can be produced in the gap regions of the magnetospheres of pulsars and black holes. We show that, in the case of supermassive black holes situated in active galactic nuclei, the chiral charge density and the chiral chemical potential are very small and unlikely to have any observable effects. In contrast, the chiral asymmetry produced in the magnetospheres of magnetars can be substantial. It can trigger the chiral plasma instability that, in turn, can lead to observable phenomena in magnetars. In particular, the instability should trigger circularly polarized electromagnetic radiation in a wide window of frequencies, spanning from radio to near-infrared. As such, the produced chiral charge has the potential to affect some features of fast radio bursts.

10 pages, 1 figure, 1 table; v2: some discussions are extended, accepted for publication in Eur. Phys. J. C

References in corpus (17)

• A fast radio burst associated with a Galactic magnetar
• A bright millisecond-duration radio burst from a Galactic magnetar
• Quantum field theory in a magnetic field: From quantum chromodynamics to graphene and Dirac semimetals
• INTEGRAL discovery of a burst with associated radio emission from the magnetar SGR 1935+2154
• Testing the chiral magnetic and chiral vortical effects in heavy ion collisions
• A peculiar hard X-ray counterpart of a Galactic fast radio burst
• Origin of Pulsar Radio Emission
• The turbulent chiral-magnetic cascade in the early universe
• Theory of pulsar magnetosphere and wind
• The Role of the Electron Mass in Damping Chiral Magnetic Instability in Supernova and Neutron Stars
• Long-range magnetic fields in the ground state of the Standard Model plasma
• PIC methods in astrophysics: Simulations of relativistic jets and kinetic physics in astrophysical systems
• Axion Production in Pulsar Magnetosphere Gaps
• Evolution of the Primordial Axial Charge across Cosmic Times
• Multimessenger signals from black hole-neutron star mergers without significant tidal disruption
• Equilibration of the chiral asymmetry due to finite electron mass in electron-positron plasma
• Are fast radio bursts the birthmark of magnetars?

Cited by in corpus (7)

• Chiral effects in astrophysics and cosmology
• Strange magnetars admixed with fermionic dark matter
• Constraining CPT-odd electromagnetic chiral parameters with pulsar timing
• The mass and spectral function of scalar and pseudoscalar mesons in a hot and chirally imbalanced medium using the two-flavor NJL model
• In-medium polarization tensor in strong magnetic fields (II): Axial Ward identity at finite temperature and density
• Hypothesis of a bi-isotropic-like plasma permeating the interstellar space
• Optical effects in unmagnetized cold plasmas by a chiral axion factor