Buchumschlag

Magnetization of the intergalactic medium in the IllustrisTNG simulations: the importance of extended, outflow-driven bubbles

We study the effects of galaxy formation physics on the magnetization of the intergalactic medium (IGM) using the IllustrisTNG simulations. We demonstrate that large-scale regions affected by the outflows from galaxies and clusters contain magnetic fields that are several orders of magnitude stronge...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Arámburo-García, Andrés (VerfasserIn) , Bondarenko, Kyrylo (VerfasserIn) , Boyarsky, Alexey (VerfasserIn) , Nelson, Dylan (VerfasserIn) , Pillepich, Annalisa (VerfasserIn) , Sokolenko, Anastasia (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 09 June 2021
In: Monthly notices of the Royal Astronomical Society
Year: 2021, Jahrgang: 505, Heft: 4, Pages: 5038-5057
ISSN:1365-2966
DOI:10.1093/mnras/stab1632
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/mnras/stab1632
Volltext
Verfasserangaben:Andrés Arámburo-García, Kyrylo Bondarenko, Alexey Boyarsky, Dylan Nelson, Annalisa Pillepich and Anastasia Sokolenko
Beschreibung
Zusammenfassung:We study the effects of galaxy formation physics on the magnetization of the intergalactic medium (IGM) using the IllustrisTNG simulations. We demonstrate that large-scale regions affected by the outflows from galaxies and clusters contain magnetic fields that are several orders of magnitude stronger than in unaffected regions with the same electron density. Moreover, like magnetic fields amplified inside galaxies, these magnetic fields do not depend on the primordial seed, i.e. the adopted initial conditions for magnetic field strength. We study the volume filling fraction of these strong field regions and their occurrence in random lines of sight. As a first application, we use these results to put bounds on the photon-axion conversion from spectral distortion of the CMB. As photon-axion coupling grows with energy, stronger constraints could potentially be obtained using data on the propagation of gamma-ray photons through the IGM. Finally, we also briefly discuss potential applications of our results to the Faraday Rotation measurements.
Beschreibung:Gesehen am 02.12.2021
Beschreibung:Online Resource
ISSN:1365-2966
DOI:10.1093/mnras/stab1632

Ähnliche Einträge