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The magnetic field of the Large Magellanic Cloud revealed through Faraday rotation

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 نشر من قبل Bryan Gaensler
 تاريخ النشر 2005
  مجال البحث فيزياء
والبحث باللغة English
 تأليف B. M. Gaensler




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We have measured the Faraday rotation toward a large sample of polarized radio sources behind the Large Magellanic Cloud (LMC), to determine the structure of this galaxys magnetic field. The magnetic field of the LMC consists of a coherent axisymmetric spiral of field strength ~1 microgauss. Strong fluctuations in the magnetic field are also seen, on small (<0.5 parsecs) and large (~100 parsecs) scales. The significant bursts of recent star formation and supernova activity in the LMC argue against standard dynamo theory, adding to the growing evidence for rapid field amplification in galaxies.



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