SIMBAD references

2009ApJ...704..891L - Astrophys. J., 704, 891-897 (2009/October-3)

Anchoring magnetic field in turbulent molecular clouds.

LI H.-B., DOWELL C.D., GOODMAN A., HILDEBRAND R. and NOVAK G.

Abstract (from CDS):

One of the key problems in star formation research is to determine the role of magnetic fields. Starting from the atomic intercloud medium which has density nH∼ 1/cm3, gas must accumulate from a volume several hundred pc across in order to form a typical molecular cloud. Star formation usually occurs in cloud cores, which have linear sizes below 1 pc and densities n H2> 105/cm3. With current technologies, it is hard to probe magnetic fields at scales lying between the accumulation length and the size of cloud cores, a range corresponds to many levels of turbulent eddy cascade, and many orders of magnitude of density amplification. For field directions detected from the two extremes, however, we show here that a significant correlation is found. Comparing this result with molecular cloud simulations, only the sub-Alfvénic cases result in field orientations consistent with our observations.

Abstract Copyright:

Journal keyword(s): ISM: clouds - ISM: magnetic fields - polarization - stars: formation - turbulence

Simbad objects: 31

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2009ApJ...704..891L and select 'bookmark this link' or equivalent in the popup menu


2021.02.24-19:56:58

© Université de Strasbourg/CNRS

    • Contact