Primordial Plasma Fluctuations. I. Magnetization of the Early Universe by Dark Aperiodic Fluctuations in the Past Myon and Prior Electron–Positron Annihilation Epoch

Schlickeiser, R.; Kolberg, U.; Yoon, Peter H.

doi:10.3847/1538-4357/aab3dd

Cited by 6 publications

(2 citation statements)

References 27 publications

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“…The formation of the first stars was an epochal event that influenced the subsequent star formation. The primordial magnetic fields (Biermann 1950;Quashnock et al 1989;Sigl et al 1997;Schlickeiser et al 2018), if they were amplified via the small-scale turbulent dynamo (Kazantsev 1968;Brandenburg & Subramanian 2005;Xu & Lazarian 2016), can affect the primordial star formation and the properties of the first stars (Sur et al 2010;Schober et al 2012a;Turk et al 2012;Latif et al 2013;Machida & Doi 2013;Latif et al 2014;Klessen 2019;Sharda et al 2020).…”

Section: Introductionmentioning

confidence: 99%

Nonlinear turbulent dynamo during gravitational collapse

Xu,

Lazarian

2020

Preprint

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Via amplification by turbulent dynamo, magnetic fields can be potentially important for the formation of the first stars. To examine the dynamo behavior during the gravitational collapse of primordial gas, we extend the theory of nonlinear turbulent dynamo to include the effect of gravitational compression. The relative importance between dynamo and compression varies during contraction, with the transition from dynamo-to compression-dominated amplification of magnetic fields with the increase of density. In the nonlinear stage of magnetic field amplification with the scale-by-scale energy equipartition between turbulence and magnetic fields, reconnection diffusion of magnetic fields in ideal magnetohydrodynamic (MHD) turbulence becomes important. It causes the violation of flux-freezing condition and accounts for (a) the small growth rate of nonlinear dynamo, (b) the weak dependence of magnetic energy on density during contraction, (c) the saturated magnetic energy, and (d) the large correlation length of magnetic fields. The resulting magnetic field structure and the scaling of magnetic field strength with density are radically different from the expectations of flux-freezing.

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Section: Introductionmentioning

confidence: 99%

Nonlinear turbulent dynamo during gravitational collapse

Xu,

Lazarian

2020

Preprint

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“…Therefore, correctly describing the dynamics of this e ± plasma is of interest when considering modern cosmic mysteries such as the origin of extra-galactic magnetic fields [129,131]. While most approaches tackle magnetized plasmas from the perspective of classical or semiclassical magneto-hydrodynamics (MHD) [134][135][136][137], our perspective is to demonstrate that fundamental quantum statistical analysis can lead to further insights on the behavior of magnetized plasmas. As a starting point, we consider the energy eigenvalues of charged fermions within a homogeneous magnetic field.…”

Section: Cosmic Magnetismmentioning

confidence: 99%

A Short Survey of Matter-Antimatter Evolution in the Primordial Universe

et al. 2023

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We offer a survey of the matter-antimatter evolution within the primordial Universe. While the origin of the tiny matter-antimatter asymmetry has remained one of the big questions in modern cosmology, antimatter itself has played a large role for much of the Universe’s early history. In our study of the evolution of the Universe we adopt the position of the standard model Lambda-CDM Universe implementing the known baryonic asymmetry. We present the composition of the Universe across its temperature history while emphasizing the epochs where antimatter content is essential to our understanding. Special topics we address include the heavy quarks in quark-gluon plasma (QGP), the creation of matter from QGP, the free-streaming of the neutrinos, the vanishing of the muons, the magnetism in the electron-positron cosmos, and a better understanding of the environment of the Big Bang Nucleosynthesis (BBN) producing the light elements. We suggest but do not explore further that the methods used in exploring the early Universe may also provide new insights in the study of exotic stellar cores, magnetars, as well as gamma-ray burst (GRB) events. We describe future investigations required in pushing known physics to its extremes in the unique laboratory of the matter-antimatter early Universe.

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Small-scale turbulent dynamo in astrophysical environments: nonlinear dynamo and dynamo in a partially ionized plasma

Lazarían

2021

Rev. Mod. Plasma Phys.

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Primordial Plasma Fluctuations. I. Magnetization of the Early Universe by Dark Aperiodic Fluctuations in the Past Myon and Prior Electron–Positron Annihilation Epoch

Cited by 6 publications

References 27 publications

Nonlinear turbulent dynamo during gravitational collapse

Nonlinear turbulent dynamo during gravitational collapse

A Short Survey of Matter-Antimatter Evolution in the Primordial Universe

Small-scale turbulent dynamo in astrophysical environments: nonlinear dynamo and dynamo in a partially ionized plasma

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