Star formation and the hall effect

    Research output: Contribution to journalArticle

    88 Citations (Scopus)

    Abstract

    The breakdown of flux-freezing in molecular clouds and protostellar discs is usually approximated by ambipolar diffusion at low densities or by resistive diffusion at high densities. Here an intermediate regime is discussed in which the Hall term in the conductivity tensor is significant, and the vector evolution of the magnetic field, and therefore the evolution of the system under consideration is dramatically altered. Calculations of charged particle abundances in dense gas in molecular clouds and protostellar discs demonstrate that Hall diffusion is important over a surprisingly broad range of conditions.

    Original languageEnglish
    Pages (from-to)317-323
    Number of pages7
    JournalAstrophysics and Space Science
    Volume292
    Issue number1-4
    DOIs
    Publication statusPublished - 2004

    Keywords

    • accretion discs
    • instabilities
    • magnetohydrodynamics
    • molecular clouds
    • star formation

    Fingerprint

    Dive into the research topics of 'Star formation and the hall effect'. Together they form a unique fingerprint.

    Cite this