Journal
ASTROPHYSICAL JOURNAL
Volume 749, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0004-637X/749/1/45
Keywords
ISM: clouds; ISM: magnetic fields; polarization; turbulence
Categories
Funding
- NSERC
- Canada Research Chair
- Canada Foundation for Innovation
- Ontario Innovation Trust
- Western's Academic Development Fund
- NSF [AST 05-40882, AST 05-05230, AST 02-41356, AST 05-05124]
- Direct For Mathematical & Physical Scien
- Division Of Astronomical Sciences [0909030] Funding Source: National Science Foundation
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In this paper, we use our recent technique for estimating the turbulent component of the magnetic field to derive the structure functions of the unpolarized emission as well as that of the Stokes Q and U parameters of the polarized emission. The solutions for the structure functions to 350 mu m SHARP polarization data of OMC-1 allow the determination of the corresponding turbulent correlation length scales. The estimated values for these length scales are 9 ''.4 +/- 0 ''.1, 7 ''.3 +/- 0 ''.1, 12 ''.6 +/- 0 ''.2 (or 20.5 +/- 0.2, 16.0 +/- 0.2, and 27.5 +/- 0.4 mpc at 450 pc, the adopted distance for OMC-1) for the Stokes Q and U parameters, and for the unpolarized emission N, respectively. Our current results for Q and U are consistent with previous results obtained through other methods and may indicate presence of anisotropy in magnetized turbulence. We infer a weak coupling between the dust component responsible for the unpolarized emission N and the magnetic field B from the significant difference between their turbulent correlation length scales.
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