Does Galactic Magnetic Field Anchor in Turbulent Molecular Clouds?

Details Does Galactic Magnetic Field Anchor in Turbulent Molecular Clouds? Does Galactic Magnetic Field Anchor in Turbulent Molecular Clouds?

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008aas...212.0708l&link_type=abstract

American Astronomical Society, AAS Meeting #212, #7.08; Bulletin of the American Astronomical Society, Vol. 40, p.198

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The importance of magnetic field on regulating star formation is long debated, especially when it is compared with turbulence. Molecular cloud simulations show significant randomness in the direction of magnetic field when turbulence energy is much larger than that of magnetic field. On the other hand, if the two are comparable, the uniform magnetic field in the initial condition is preserved. Optical polarization data is known tracing the Galactic magnetic field, while sub-mm polarization data implies the field orientation within molecular clouds. By comparing the optical polarization data with the recently released sub-mm data archive from polarimeter Hertz and SCUpol, we show that it is possible to answer this long standing mystery and put constrains on star formation theories.

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