CaltechAUTHORS
Published April 10, 2012 | Version Published
Journal Article Open

Characterization of Turbulence from Submillimeter Dust Emission

Creators

  • 1. ROR icon University of Victoria
  • 2. ROR icon Western University
  • 3. ROR icon California Institute of Technology
  • 4. ROR icon University of Chicago
  • 5. ROR icon Universities Space Research Association

Abstract

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 μm 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.

Additional Information

© 2012 American Astronomical Society. Received 2011 November 19; accepted 2012 February 5; published 2012 March 20. M.H.'s research is funded through the NSERC Discovery Grant, Canada Research Chair, Canada Foundation for Innovation, Ontario Innovation Trust, and Western's Academic Development Fund programs. The CSO is funded through NSF AST 05-40882. This work has also been supported in part by NSF grants AST 05-05230, AST 02-41356, and AST 05-05124.

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Additional details

Identifiers

Eprint ID
31290
Resolver ID
CaltechAUTHORS:20120503-095452138

Funding

NSERC Discovery Grant
Canada Research Chair
Canada Foundation for Innovation
Ontario Innovation Trust
Western's Academic Development Fund programs
NSF
AST 05-40882
NSF
AST 05-05230
NSF
AST 02-41356
NSF
AST 05-05124

Dates

Created
2012-05-03
Created from EPrint's datestamp field
Updated
2021-11-09
Created from EPrint's last_modified field