Polarimetry
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Description:
My collaborators and I have shown that, contrary to previously prevailing ideas, polarimetry of background starlight cannot reliably reveal the magnetic field structure in dense interstellar clouds, because polarization efficiency is apparently low there. Much of our work in this area revolves around quantifying what exactly *is* measurable with background starlight polarimetry, and what other techniques for mapping field structure can/will work better.
"Theory" - Background Starlight - Thermal Emission
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"Theory" |
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Background Starlight |
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Arce, et al. 1998, The Polarizing Power of the Interstellar Medium in Taurus
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Goodman, Jones, Lada, & Myers 1995, Does Near-Infrared Polarimetry Reveal the Magnetic Field in Cold Dark Clouds?
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Goodman, Jones, Lada, & Myers 1992, The structure of magnetic fields in dark clouds - Infrared polarimetry in B216-217
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Goodman, Bastien, Menard, & Myers 1990, Optical polarization maps of star-forming regions in Perseus, Taurus, and Ophiuchus
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Thermal Emission |
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