Random walk of magnetic lines of force in astrophysics

J. R. Jokipii, E. N. Parker

Research output: Contribution to journalArticlepeer-review

157 Scopus citations


We point out the importance of the random fluctuations in astrophysical magnetic fields, which lead among other things to rapid diffusion of energetic particles across the average magnetic field. Application to the interplanetary magnetic field leads to a theory in which the field-line random walk, measured by the observed power spectrum of field fluctuations, is in agreement with that deduced from the observed turbulent motions in the solar photosphere. The two determinations agree well with the recently observed spread in longitude of low-energy particles released at the sun.

Original languageEnglish (US)
Pages (from-to)44-47
Number of pages4
JournalPhysical review letters
Issue number1
StatePublished - 1968
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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