# Introducing SPHINX-MHD: the impact of primordial magnetic fields on the first galaxies, reionization, and the global 21-cm signal

@inproceedings{Katz2021IntroducingST,
title={Introducing SPHINX-MHD: the impact of primordial magnetic fields on the first galaxies, reionization, and the global 21-cm signal},
author={Harley Katz and Sergio Martin-Alvarez and Joakim Rosdahl and Taysun Kimm and J{\'e}r{\'e}my Blaizot and Martin G. Haehnelt and L'eo Michel-Dansac and Thibault Garel and Jos{\'e} O{\~n}orbe and Julien Devriendt and Adrianne D. Slyz and Omar Attia and R. Teyssier},
year={2021}
}
• Published 27 January 2021
• Physics
We present the first results from SPHINX-MHD, a suite of cosmological radiation-magnetohydrodynamics simulations designed to study the impact of primordial magnetic fields (PMFs) on galaxy formation and the evolution of the intergalactic medium (IGM) during the epoch of reionization. The simulations are among the first to employ multi-frequency, on-the-fly radiation transfer and constrained transport ideal MHD in a cosmological context to simultaneously model the inhomogeneous process of…
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## References

SHOWING 1-10 OF 236 REFERENCES
Primordial magnetic fields and the HI signal from the epoch of reionization
• Physics
• 2009
The implication of primordial magnetic-field-induced structure formation for the HI signal from the epoch of reionization is studied. Using semi-analytic models, we compute both the density and
Generation of the Primordial Magnetic Fields during Cosmological Reionization
• Physics
• 2000
We investigate the generation of magnetic fields by the Biermann battery in cosmological ionization fronts, using new simulations of the reionization of the universe by stars in protogalaxies. Two
An MHD gadget for cosmological simulations
• Physics
• 2008
Various radio observations have shown that the hot atmospheres of galaxy clusters are magnetized. However, our understanding of the origin of these magnetic fields, their implications on structure
Ly α as a tracer of cosmic reionization in the SPHINX radiation-hydrodynamics cosmological simulation
• Physics
• 2021
The Lyα emission line is one of the most promising probes of cosmic reionisation but isolating the signature of a change in the ionisation state of the IGM is challenging because of intrinsic
Cosmological MHD simulation of a cooling flow cluster
• Physics
• 2008
Context. Various observations of magnetic fields in the intra-cluster medium (ICM), most of the time restricted to cluster cores, point towards a field strength of a few µG (synchrotron radiation
INFLUENCE OF PRIMORDIAL MAGNETIC FIELDS ON 21 CM EMISSION
• Physics
• 2009
Magnetic fields in the early universe can significantly alter the thermal evolution and the ionization history during the dark ages. This is reflected in the 21 cm line of atomic hydrogen, which is
Strong magnetic fields and large rotation measures in protogalaxies from supernova seeding
• Physics
• 2013
We present a model for the seeding and evolution of magnetic fi elds in protogalaxies. Super- nova (SN) explosions during the assembly of a protogalaxy self-consistently provide magnetic seed fields,
Resolved magnetic dynamo action in the simulated intracluster medium
• Physics
• 2018
Faraday rotation and synchrotron emission from extragalactic radio sources give evidence for the presence of magnetic fields extending over ˜ Mpc scales. However, the origin of these fields remains
Magnetogenesis around the first galaxies: the impact of different field seeding processes on galaxy formation
• Physics
• 2020
We study the evolution of magnetic fields generated by charge segregation ahead of ionization fronts during the Epoch of Reionization, and their effects on galaxy formation. We compare this magnetic
Magnetic reheating
• Physics
• 2017
We provide a new bound on the amplitude of primordial magnetic fields (PMFs) by using a novel mechanism, named {\it magnetic reheating}. Before the epoch of recombination, PMFs induce the fluid