Generation of Seed Magnetic Field around First Stars: the Biermann Battery Effect

Abstract

We investigate generation processes of magnetic fields around first stars. Since the first stars are expected to form anisotropic ionization fronts in the surrounding clumpy media, magnetic fields are generated by effects of radiation force as well as the Biermann battery effect. We have calculated the amplitude of magnetic field generated by the effects of radiation force around the first stars in the preceding paper, in which the Biermann battery effects are not taken into account.In this paper, we calculate the generation of magnetic fields by the Biermann battery effect as well as the effects of radiation force, utilizing the radiation hydrodynamics simulations. As a result, we find that the generated magnetic field strengths are ~ 10^{-19}G-10^{-17}G at ~ 100pc-1kpc scale mainly by the Biermann battery, which is an order of magnitude larger than the results of our previous study. We also find that this result is insensitive to various physical parameters including the mass of the source star, distance between the source and the dense clump, unless we take unlikely values of these parameters.

19 pages, 7 figures, Accepted for publications in ApJ

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Cited by in corpus (24)

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• The Mass Spectrum of the First Stars
• Possible Indirect Confirmation of the Existence of Pop III Massive Stars by Gravitational Wave
• The Formation of Population III Stars in Gas Accretion Stage: Effects of Magnetic Fields
• The importance of magnetic fields for the initial mass function of the first stars
• Constraints on Primordial Magnetic Fields from Planck combined with the South Pole Telescope CMB B-mode polarization measurements
• Magnetogenesis around the first galaxies: the impact of different field seeding processes on galaxy formation
• Cosmic Magnetism in Centimeter and Meter Wavelength Radio Astronomy
• Primordial black holes as seeds of magnetic fields in the universe
• Intergalactic Magnetogenesis at Cosmic Dawn by Photoionization
• Dissipation of magnetic fields in star-forming clouds with different metallicities
• Magnetohydrodynamic effect on first star formation: prestellar core collapse and protostar formation
• Non-ideal magnetohydrodynamic simulations of the first star formation: the effect of ambipolar diffusion
• Origin and Impacts of the First Cosmic Rays
• Generation of Magnetic Field on the Accretion Disk around a Proto-First-Star
• Can Population III stars be major origins of both merging binary black holes and extremely metal poor stars?
• Evolution of Magnetic Fields in Collapsing Star-forming Clouds under Different Environments
• The Biermann battery driven by a streaming plasma
• Amplification and saturation of turbulent magnetic field in collapsing primordial gas clouds
• The influence of primordial magnetic fields on the spherical collapse model in cosmology
• The possible existence of Pop III NS-BH binary and its detectability
• Thermal generation of the magnetic field in the surface layers of massive stars
• Simulating the collapse of rotating primordial gas clouds to study the survival possibility of Pop III protostars
• Constraints on Primordial Magnetic Fields from High Redshift Stellar Mass Density