Growth rate of magnetic field during starburst phase in a galaxy

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During an active star formation phase, it is conceivable that the turbulent level of a galaxy increases and consequently an increase in magnetic field by turbulent dynamo process. We point out that the thickness of the dynamo region is sensitive to the turbulent level. We examine the linear growth rate of three different dynamos, namely, αω, α2ω and α2 dynamos. We find that the dependence of the growth rate on turbulent level is quite different for different dynamos. Moreover, the growth rate is not necessary monotonic to turbulence level even in the linear regime.

Original languageEnglish
Title of host publicationSolar and Astrophysical Dynamos and Magnetic Activity
EditorsAlexander G. Kosovichev, Elisabete de Gouveia Dal Pino, Yihua Yan
Number of pages2
StatePublished - Aug 2012

Publication series

NameProceedings of the International Astronomical Union
ISSN (Print)1743-9213
ISSN (Electronic)1743-9221


  • galaxies: starburst
  • ISM: magnetic fields
  • turbulence


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