The magnetic field geometry in DR 21

Terry Jay Jones, Hassib Amini

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

We present broadband imaging polarimetry of DR 21 at 2.2 μm. Background stars shining through the lobes of the bipolar outflow show polarization aligned with the long axis of the outflow, indicating a magnetic field geometry oriented along the flow axis. There is no indication of a spiral or turbulent magnetic field geometry in the lobes. The polarization of stars in the central cluster has a different position angle than the lobes and is in good agreement with millimeter polarimetry. The nebulosity in the eastern lobe has moderate to high polarization, consistent with scattering of continuum light from the central cluster. We were unable to detect polarization of the nebulosity in the western lobe at the 4.2% (3 σ) level.

Original languageEnglish (US)
Pages (from-to)1418-1425
Number of pages8
JournalAstronomical Journal
Volume125
Issue number3 1767
DOIs
StatePublished - Mar 2003

Keywords

  • ISM: jets and outflows
  • ISM: magnetic fields

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    Jones, T. J., & Amini, H. (2003). The magnetic field geometry in DR 21. Astronomical Journal, 125(3 1767), 1418-1425. https://doi.org/10.1086/367910