Open AccessBiermann battery as a source of cosmic magnetic fields
Author(s) -
Е. А. Михайлов,
R. R. Andreasyan
Publication year - 2022
Publication title -
astronomy at the epoch of multimessenger studies. proceedings of the vak-2021 conference, aug 23–28, 2021
Language(s) - English
Resource type - Conference proceedings
DOI - 10.51194/vak2021.2022.1.1.190
Subject(s) - dynamo , physics , magnetic field , electron , astrophysics , faraday cage , faraday effect , cosmic cancer database , stars , computational physics , regularization (linguistics) , magnetic flux , galaxy , nuclear physics , computer science , quantum mechanics , artificial intelligence
Nowadays it is well-known that some spiral galaxies, accretion discs, stars etc. have large scale magnetic elds. Theirexistence is supported by Faraday rotation measurements and another observational data. As for theoretical models, themagnetic eld generation is usually described by the dynamo mechanism. It explains the exponential growth of the eld.However, this model does not describe the formation of initial magnetic eld, which should be considered using anotherapproaches. One of the most reasonable methods is connected by the Biermann battery mechanism. It uses the fact thatparticles (protons and electrons) have the same charge and signicantly dierent masses. This leads to the emergence ofcircular currents which produce vertical magnetic elds. Their structure is described by the integral equation which can besolved using regularization methods.